mirror of
https://github.com/WorldEditAxe/eaglerproxy.git
synced 2024-11-14 09:36:04 -08:00
245 lines
14 KiB
JavaScript
245 lines
14 KiB
JavaScript
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import * as fs from "fs/promises";
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import * as pathUtil from "path";
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import * as semver from "semver";
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import { EventEmitter } from "events";
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import { pathToFileURL } from "url";
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import { Logger } from "../../logger.js";
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import { PROXY_VERSION } from "../../meta.js";
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import { Util } from "../Util.js";
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import { Enums } from "../Enums.js";
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import { Chat } from "../Chat.js";
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import { Constants } from "../Constants.js";
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import { Motd } from "../Motd.js";
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import { Player } from "../Player.js";
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import { MineProtocol } from "../Protocol.js";
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import { EaglerSkins } from "../skins/EaglerSkins.js";
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import { BungeeUtil } from "../BungeeUtil.js";
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export class PluginManager extends EventEmitter {
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plugins;
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proxy;
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Logger = Logger;
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Enums = Enums;
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Chat = Chat;
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Constants = Constants;
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Motd = Motd;
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Player = Player;
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MineProtocol = MineProtocol;
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EaglerSkins = EaglerSkins;
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Util = Util;
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BungeeUtil = BungeeUtil;
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_loadDir;
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_logger;
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constructor(loadDir) {
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super();
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this.setMaxListeners(0);
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this._loadDir = loadDir;
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this.plugins = new Map();
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this.Logger = Logger;
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this._logger = new this.Logger("PluginManager");
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}
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async loadPlugins() {
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this._logger.info("Loading plugin metadata files...");
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const pluginMeta = await this._findPlugins(this._loadDir);
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await this._validatePluginList(pluginMeta);
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let pluginsString = "";
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for (const [id, plugin] of pluginMeta) {
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pluginsString += `${id}@${plugin.version}`;
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}
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pluginsString = pluginsString.substring(0, pluginsString.length - 1);
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this._logger.info(`Found ${pluginMeta.size} plugin(s): ${pluginsString}`);
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if (pluginMeta.size !== 0) {
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this._logger.info(`Loading ${pluginMeta.size} plugin(s)...`);
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const successLoadCount = await this._loadPlugins(pluginMeta, this._getLoadOrder(pluginMeta));
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this._logger.info(`Successfully loaded ${successLoadCount} plugin(s).`);
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}
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this.emit("pluginsFinishLoading", this);
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}
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async _findPlugins(dir) {
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const ret = new Map();
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const lsRes = (await Promise.all((await fs.readdir(dir)).filter((ent) => !ent.endsWith(".disabled")).map(async (res) => [pathUtil.join(dir, res), await fs.stat(pathUtil.join(dir, res))])));
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for (const [path, details] of lsRes) {
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if (details.isFile()) {
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if (path.endsWith(".jar")) {
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this._logger.warn(`Non-EaglerProxy plugin found! (${path})`);
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this._logger.warn(`BungeeCord plugins are NOT supported! Only custom EaglerProxy plugins are allowed.`);
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}
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else if (path.endsWith(".zip")) {
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this._logger.warn(`.zip file found in plugin directory! (${path})`);
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this._logger.warn(`A .zip file was found in the plugins directory! Perhaps you forgot to unzip it?`);
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}
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else
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this._logger.debug(`Skipping file found in plugin folder: ${path}`);
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}
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else {
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const metadataPath = pathUtil.resolve(pathUtil.join(path, "metadata.json"));
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let metadata;
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try {
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const file = await fs.readFile(metadataPath);
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metadata = JSON.parse(file.toString());
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// do some type checking
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if (typeof metadata.name != "string")
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throw new TypeError("<metadata>.name is either null or not of a string type!");
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if (typeof metadata.id != "string")
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throw new TypeError("<metadata>.id is either null or not of a string type!");
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if (/ /gm.test(metadata.id))
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throw new Error(`<metadata>.id contains whitespace!`);
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if (!semver.valid(metadata.version))
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throw new Error("<metadata>.version is either null, not a string, or is not a valid SemVer!");
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if (typeof metadata.entry_point != "string")
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throw new TypeError("<metadata>.entry_point is either null or not a string!");
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if (!metadata.entry_point.endsWith(".js"))
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throw new Error(`<metadata>.entry_point (${metadata.entry_point}) references a non-JavaScript file!`);
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if (!(await Util.fsExists(pathUtil.resolve(path, metadata.entry_point))))
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throw new Error(`<metadata>.entry_point (${metadata.entry_point}) references a non-existent file!`);
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if (metadata.requirements instanceof Array == false)
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throw new TypeError("<metadata>.requirements is either null or not an array!");
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for (const requirement of metadata.requirements) {
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if (typeof requirement != "object" || requirement == null)
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throw new TypeError(`<metadata>.requirements[${metadata.requirements.indexOf(requirement)}] is either null or not an object!`);
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if (typeof requirement.id != "string")
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throw new TypeError(`<metadata>.requirements[${metadata.requirements.indexOf(requirement)}].id is either null or not a string!`);
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if (/ /gm.test(requirement.id))
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throw new TypeError(`<metadata>.requirements[${metadata.requirements.indexOf(requirement)}].id contains whitespace!`);
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if (semver.validRange(requirement.version) == null && requirement.version != "any")
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throw new TypeError(`<metadata>.requirements[${metadata.requirements.indexOf(requirement)}].version is either null or not a valid SemVer!`);
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}
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if (metadata.load_after instanceof Array == false)
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throw new TypeError("<metadata>.load_after is either null or not an array!");
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for (const loadReq of metadata.load_after) {
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if (typeof loadReq != "string")
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throw new TypeError(`<metadata>.load_after[${metadata.load_after.indexOf(loadReq)}] is either null, or not a valid ID!`);
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if (/ /gm.test(loadReq))
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throw new TypeError(`<metadata>.load_after[${metadata.load_after.indexOf(loadReq)}] contains whitespace!`);
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}
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if (metadata.incompatibilities instanceof Array == false)
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throw new TypeError("<metadata>.incompatibilities is either null or not an array!");
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for (const incompatibility of metadata.incompatibilities) {
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if (typeof incompatibility != "object" || incompatibility == null)
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throw new TypeError(`<metadata>.incompatibilities[${metadata.load_after.indexOf(incompatibility)}] is either null or not an object!`);
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if (typeof incompatibility.id != "string")
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throw new TypeError(`<metadata>.incompatibilities[${metadata.load_after.indexOf(incompatibility)}].id is either null or not a string!`);
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if (/ /gm.test(incompatibility.id))
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throw new TypeError(`<metadata>.incompatibilities[${metadata.load_after.indexOf(incompatibility)}].id contains whitespace!`);
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if (semver.validRange(incompatibility.version) == null)
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throw new TypeError(`<metadata>.incompatibilities[${metadata.load_after.indexOf(incompatibility)}].version is either null or not a valid SemVer!`);
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}
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if (ret.has(metadata.id))
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throw new Error(`Duplicate plugin ID detected: ${metadata.id}. Are there duplicate plugins in the plugin folder?`);
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ret.set(metadata.id, {
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path: pathUtil.resolve(path),
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...metadata,
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});
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}
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catch (err) {
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this._logger.warn(`Failed to load plugin metadata file at ${metadataPath}: ${err.stack ?? err}`);
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this._logger.warn("This plugin will skip loading due to an error.");
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}
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}
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}
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return ret;
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}
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async _validatePluginList(plugins) {
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for (const [id, plugin] of plugins) {
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for (const req of plugin.requirements) {
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if (!plugins.has(req.id) && req.id != "eaglerproxy" && !req.id.startsWith("module:")) {
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this._logger.fatal(`Error whilst loading plugins: Plugin ${plugin.name}@${plugin.version} requires plugin ${req.id}@${req.version}, but it is not found!`);
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this._logger.fatal("Loading has halted due to missing dependencies.");
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process.exit(1);
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}
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if (req.id == "eaglerproxy") {
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if (!semver.satisfies(PROXY_VERSION, req.version) && req.version != "any") {
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this._logger.fatal(`Error whilst loading plugins: Plugin ${plugin.name}@${plugin.version} requires a proxy version that satisfies the SemVer requirement ${req.version}, but the proxy version is ${PROXY_VERSION} and does not satisfy the SemVer requirement!`);
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this._logger.fatal("Loading has halted due to dependency issues.");
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process.exit(1);
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}
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}
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else if (req.id.startsWith("module:")) {
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const moduleName = req.id.replace("module:", "");
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try {
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await import(moduleName);
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}
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catch (err) {
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if (err.code == "ERR_MODULE_NOT_FOUND") {
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this._logger.fatal(`Plugin ${plugin.name}@${plugin.version} requires NPM module ${moduleName}${req.version == "any" ? "" : `@${req.version}`} to be installed, but it is not found!`);
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this._logger.fatal(`Please install this missing package by running "npm install ${moduleName}${req.version == "any" ? "" : `@${req.version}`}". If you're using yarn, run "yarn add ${moduleName}${req.version == "any" ? "" : `@${req.version}`}" instead.`);
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this._logger.fatal("Loading has halted due to dependency issues.");
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process.exit(1);
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}
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}
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}
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else {
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let dep = plugins.get(req.id);
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if (!semver.satisfies(dep.version, req.version) && req.version != "any") {
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this._logger.fatal(`Error whilst loading plugins: Plugin ${plugin.name}@${plugin.version} requires a version of plugin ${dep.name} that satisfies the SemVer requirement ${req.version}, but the plugin ${dep.name}'s version is ${dep.version} and does not satisfy the SemVer requirement!`);
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this._logger.fatal("Loading has halted due to dependency issues.");
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process.exit(1);
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}
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}
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}
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plugin.incompatibilities.forEach((incomp) => {
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const plugin_incomp = plugins.get(incomp.id);
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if (plugin_incomp) {
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if (semver.satisfies(plugin_incomp.version, incomp.version)) {
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this._logger.fatal(`Error whilst loading plugins: Plugin incompatibility found! Plugin ${plugin.name}@${plugin.version} is incompatible with ${plugin_incomp.name}@${plugin_incomp.version} as it satisfies the SemVer requirement of ${incomp.version}!`);
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this._logger.fatal("Loading has halted due to plugin incompatibility issues.");
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process.exit(1);
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}
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}
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else if (incomp.id == "eaglerproxy") {
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if (semver.satisfies(PROXY_VERSION, incomp.version)) {
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this._logger.fatal(`Error whilst loading plugins: Plugin ${plugin.name}@${plugin.version} is incompatible with proxy version ${PROXY_VERSION} as it satisfies the SemVer requirement of ${incomp.version}!`);
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this._logger.fatal("Loading has halted due to plugin incompatibility issues.");
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process.exit(1);
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}
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}
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});
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}
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}
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_getLoadOrder(plugins) {
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let order = [], lastPlugin;
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plugins.forEach((v) => order.push(v.id));
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for (const [id, plugin] of plugins) {
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const load = plugin.load_after.filter((dep) => plugins.has(dep));
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if (load.length < 0) {
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order.push(plugin.id);
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}
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else {
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let mostLastIndexFittingDeps = -1;
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for (const loadEnt of load) {
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if (loadEnt != lastPlugin) {
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if (order.indexOf(loadEnt) + 1 > mostLastIndexFittingDeps) {
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mostLastIndexFittingDeps = order.indexOf(loadEnt) + 1;
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}
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}
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}
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if (mostLastIndexFittingDeps != -1) {
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order.splice(order.indexOf(plugin.id), 1);
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order.splice(mostLastIndexFittingDeps - 1, 0, plugin.id);
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lastPlugin = plugin;
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}
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}
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}
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return order;
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}
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async _loadPlugins(plugins, order) {
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let successCount = 0;
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for (const id of order) {
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let pluginMeta = plugins.get(id);
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try {
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const imp = await import(process.platform == "win32" ? pathToFileURL(pathUtil.join(pluginMeta.path, pluginMeta.entry_point)).toString() : pathUtil.join(pluginMeta.path, pluginMeta.entry_point));
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this.plugins.set(pluginMeta.id, {
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exports: imp,
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metadata: pluginMeta,
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});
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successCount++;
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this.emit("pluginLoad", pluginMeta.id, imp);
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}
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catch (err) {
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this._logger.warn(`Failed to load plugin entry point for plugin (${pluginMeta.name}) at ${pluginMeta.path}: ${err.stack ?? err}`);
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this._logger.warn("This plugin will skip loading due to an error.");
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}
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return successCount;
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}
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}
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}
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