mirror of https://github.com/GeyserMC/Geyser.git
247 lines
11 KiB
Java
247 lines
11 KiB
Java
/*
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* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.geyser.extension;
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import lombok.RequiredArgsConstructor;
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import org.checkerframework.checker.nullness.qual.NonNull;
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import org.geysermc.geyser.GeyserImpl;
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import org.geysermc.geyser.api.event.ExtensionEventBus;
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import org.geysermc.geyser.api.extension.Extension;
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import org.geysermc.geyser.api.extension.ExtensionDescription;
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import org.geysermc.geyser.api.extension.ExtensionLoader;
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import org.geysermc.geyser.api.extension.ExtensionLogger;
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import org.geysermc.geyser.api.extension.ExtensionManager;
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import org.geysermc.geyser.api.extension.exception.InvalidDescriptionException;
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import org.geysermc.geyser.api.extension.exception.InvalidExtensionException;
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import org.geysermc.geyser.extension.event.GeyserExtensionEventBus;
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import org.geysermc.geyser.text.GeyserLocale;
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import java.io.IOException;
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import java.nio.file.FileSystem;
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import java.nio.file.FileSystems;
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import java.nio.file.Files;
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import java.nio.file.NoSuchFileException;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.HashMap;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import java.util.Objects;
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import java.util.regex.Pattern;
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@RequiredArgsConstructor
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public class GeyserExtensionLoader extends ExtensionLoader {
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private static final Path EXTENSION_DIRECTORY = Paths.get("extensions");
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private static final Pattern API_VERSION_PATTERN = Pattern.compile("^[0-9]+\\.[0-9]+\\.[0-9]+$");
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private final Map<String, Class<?>> classes = new HashMap<>();
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private final Map<String, GeyserExtensionClassLoader> classLoaders = new HashMap<>();
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private final Map<Extension, GeyserExtensionContainer> extensionContainers = new HashMap<>();
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public GeyserExtensionContainer loadExtension(Path path, GeyserExtensionDescription description) throws InvalidExtensionException, InvalidDescriptionException {
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if (path == null) {
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throw new InvalidExtensionException("Path is null");
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}
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if (Files.notExists(path)) {
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throw new InvalidExtensionException(new NoSuchFileException(path.toString()) + " does not exist");
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}
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Path parentFile = path.getParent();
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Path dataFolder = parentFile.resolve(description.name());
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if (Files.exists(dataFolder) && !Files.isDirectory(dataFolder)) {
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throw new InvalidExtensionException("The folder " + dataFolder + " is not a directory and is the data folder for the extension " + description.name() + "!");
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}
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final GeyserExtensionClassLoader loader;
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try {
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loader = new GeyserExtensionClassLoader(this, getClass().getClassLoader(), description, path);
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} catch (Throwable e) {
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throw new InvalidExtensionException(e);
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}
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this.classLoaders.put(description.name(), loader);
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return this.setup(loader.extension(), description, dataFolder, new GeyserExtensionEventBus(GeyserImpl.getInstance().eventBus(), loader.extension()));
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}
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private GeyserExtensionContainer setup(Extension extension, GeyserExtensionDescription description, Path dataFolder, ExtensionEventBus eventBus) {
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GeyserExtensionLogger logger = new GeyserExtensionLogger(GeyserImpl.getInstance().getLogger(), description.name());
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return new GeyserExtensionContainer(extension, dataFolder, description, this, logger, eventBus);
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}
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public GeyserExtensionDescription extensionDescription(Path path) throws InvalidDescriptionException {
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Map<String, String> environment = new HashMap<>();
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try (FileSystem fileSystem = FileSystems.newFileSystem(path, environment, null)) {
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Path extensionYml = fileSystem.getPath("extension.yml");
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return GeyserExtensionDescription.fromYaml(Files.newBufferedReader(extensionYml));
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} catch (IOException ex) {
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throw new InvalidDescriptionException("Failed to load extension description for " + path, ex);
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}
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}
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public Pattern[] extensionFilters() {
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return new Pattern[] { Pattern.compile("^.+\\.jar$") };
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}
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public Class<?> classByName(final String name) throws ClassNotFoundException{
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Class<?> clazz = this.classes.get(name);
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try {
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for (GeyserExtensionClassLoader loader : this.classLoaders.values()) {
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try {
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clazz = loader.findClass(name,false);
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} catch(NullPointerException ignored) {
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}
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}
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return clazz;
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} catch (NullPointerException s) {
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return null;
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}
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}
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void setClass(String name, final Class<?> clazz) {
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if (!this.classes.containsKey(name)) {
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this.classes.put(name,clazz);
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}
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}
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@Override
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protected void loadAllExtensions(@NonNull ExtensionManager extensionManager) {
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// noinspection ConstantConditions
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if (!GeyserImpl.VERSION.contains(".")) {
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GeyserImpl.getInstance().getLogger().error(GeyserLocale.getLocaleStringLog("geyser.extensions.load.failed_version_number"));
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return;
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}
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String[] apiVersion = GeyserImpl.VERSION.split("\\.");
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try {
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if (Files.notExists(EXTENSION_DIRECTORY)) {
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Files.createDirectory(EXTENSION_DIRECTORY);
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}
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Map<String, Path> extensions = new LinkedHashMap<>();
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Map<String, GeyserExtensionContainer> loadedExtensions = new LinkedHashMap<>();
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Pattern[] extensionFilters = this.extensionFilters();
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Files.walk(EXTENSION_DIRECTORY).forEach(path -> {
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if (Files.isDirectory(path)) {
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return;
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}
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for (Pattern filter : extensionFilters) {
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if (!filter.matcher(path.getFileName().toString()).matches()) {
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return;
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}
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}
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try {
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GeyserExtensionDescription description = this.extensionDescription(path);
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if (description == null) {
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return;
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}
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String name = description.name();
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if (extensions.containsKey(name) || extensionManager.extension(name) != null) {
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GeyserImpl.getInstance().getLogger().warning(GeyserLocale.getLocaleStringLog("geyser.extensions.load.duplicate", name, path.toString()));
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return;
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}
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try {
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// Check the format: majorVersion.minorVersion.patch
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if (!API_VERSION_PATTERN.matcher(description.apiVersion()).matches()) {
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throw new IllegalArgumentException();
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}
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} catch (NullPointerException | IllegalArgumentException e) {
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GeyserImpl.getInstance().getLogger().error(GeyserLocale.getLocaleStringLog("geyser.extensions.load.failed_api_format", name, apiVersion[0] + "." + apiVersion[1]));
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return;
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}
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String[] versionArray = description.apiVersion().split("\\.");
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// Completely different API version
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if (!Objects.equals(Integer.valueOf(versionArray[0]), Integer.valueOf(apiVersion[0]))) {
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GeyserImpl.getInstance().getLogger().error(GeyserLocale.getLocaleStringLog("geyser.extensions.load.failed_api_version", name, apiVersion[0] + "." + apiVersion[1]));
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return;
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}
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// If the extension requires new API features, being backwards compatible
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if (Integer.parseInt(versionArray[1]) > Integer.parseInt(apiVersion[1])) {
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GeyserImpl.getInstance().getLogger().error(GeyserLocale.getLocaleStringLog("geyser.extensions.load.failed_api_version", name, apiVersion[0] + "." + apiVersion[1]));
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return;
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}
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extensions.put(name, path);
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loadedExtensions.put(name, this.loadExtension(path, description));
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} catch (Exception e) {
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GeyserImpl.getInstance().getLogger().error(GeyserLocale.getLocaleStringLog("geyser.extensions.load.failed_with_name", path.getFileName(), path.toAbsolutePath()), e);
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}
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});
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for (GeyserExtensionContainer container : loadedExtensions.values()) {
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this.extensionContainers.put(container.extension(), container);
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this.register(container.extension(), extensionManager);
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}
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} catch (IOException ex) {
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ex.printStackTrace();
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}
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}
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@Override
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protected boolean isEnabled(@NonNull Extension extension) {
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return this.extensionContainers.get(extension).enabled;
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}
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@Override
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protected void setEnabled(@NonNull Extension extension, boolean enabled) {
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this.extensionContainers.get(extension).enabled = enabled;
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}
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@NonNull
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@Override
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protected Path dataFolder(@NonNull Extension extension) {
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return this.extensionContainers.get(extension).dataFolder();
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}
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@NonNull
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@Override
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protected ExtensionDescription description(@NonNull Extension extension) {
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return this.extensionContainers.get(extension).description();
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}
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@NonNull
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@Override
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protected ExtensionEventBus eventBus(@NonNull Extension extension) {
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return this.extensionContainers.get(extension).eventBus();
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}
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@NonNull
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@Override
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protected ExtensionLogger logger(@NonNull Extension extension) {
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return this.extensionContainers.get(extension).logger();
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}
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}
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