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Mirror von https://github.com/GeyserMC/Geyser.git synchronisiert 2024-12-26 08:10:11 +01:00

Added basic extension loading

Dieser Commit ist enthalten in:
ImDaBigBoss 2022-01-10 18:45:26 +01:00
Ursprung 9084c59003
Commit 8627787ea9
9 geänderte Dateien mit 918 neuen und 0 gelöschten Zeilen

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@ -52,6 +52,7 @@ import org.geysermc.geyser.api.GeyserApi;
import org.geysermc.geyser.command.CommandManager; import org.geysermc.geyser.command.CommandManager;
import org.geysermc.geyser.configuration.GeyserConfiguration; import org.geysermc.geyser.configuration.GeyserConfiguration;
import org.geysermc.geyser.entity.EntityDefinitions; import org.geysermc.geyser.entity.EntityDefinitions;
import org.geysermc.geyser.extension.ExtensionManager;
import org.geysermc.geyser.level.WorldManager; import org.geysermc.geyser.level.WorldManager;
import org.geysermc.geyser.network.ConnectorServerEventHandler; import org.geysermc.geyser.network.ConnectorServerEventHandler;
import org.geysermc.geyser.pack.ResourcePack; import org.geysermc.geyser.pack.ResourcePack;
@ -161,6 +162,8 @@ public class GeyserImpl implements GeyserApi {
ResourcePack.loadPacks(); ResourcePack.loadPacks();
ExtensionManager.init();
if (platformType != PlatformType.STANDALONE && config.getRemote().getAddress().equals("auto")) { if (platformType != PlatformType.STANDALONE && config.getRemote().getAddress().equals("auto")) {
// Set the remote address to localhost since that is where we are always connecting // Set the remote address to localhost since that is where we are always connecting
try { try {
@ -444,6 +447,8 @@ public class GeyserImpl implements GeyserApi {
newsHandler.shutdown(); newsHandler.shutdown();
this.getCommandManager().getCommands().clear(); this.getCommandManager().getCommands().clear();
ExtensionManager.getExtensionManager().disableExtensions();
bootstrap.getGeyserLogger().info(GeyserLocale.getLocaleStringLog("geyser.core.shutdown.done")); bootstrap.getGeyserLogger().info(GeyserLocale.getLocaleStringLog("geyser.core.shutdown.done"));
} }

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@ -0,0 +1,50 @@
/*
* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.geyser.extension;
import org.geysermc.geyser.GeyserImpl;
import java.io.File;
import java.io.InputStream;
public interface Extension {
void onLoad();
void onEnable();
void onDisable();
boolean isEnabled();
boolean isDisabled();
File getDataFolder();
ExtensionDescription getDescription();
String getName();
InputStream getResource(String filename);
void saveResource(String filename, boolean replace);
GeyserImpl getGeyser();
ClassLoader getClassLoader();
ExtensionLoader getExtensionLoader();
}

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@ -0,0 +1,97 @@
/*
* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.geyser.extension;
import org.geysermc.geyser.extension.exception.InvalidExtensionException;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
public class ExtensionClassLoader extends URLClassLoader {
private ExtensionLoader loader;
private Map<String, Class> classes = new HashMap<>();
public GeyserExtension extension;
public ExtensionClassLoader(ExtensionLoader loader, ClassLoader parent, ExtensionDescription description, File file) throws InvalidExtensionException, MalformedURLException {
super(new URL[] { file.toURI().toURL() }, parent);
this.loader = loader;
try {
Class<?> jarClass;
try {
jarClass = Class.forName(description.getMain(), true, this);
} catch (ClassNotFoundException ex) {
throw new InvalidExtensionException("Class " + description.getMain() + " not found, extension cannot be loaded", ex);
}
Class<? extends GeyserExtension> extensionClass;
try {
extensionClass = jarClass.asSubclass(GeyserExtension.class);
} catch (ClassCastException ex) {
throw new InvalidExtensionException("Main class " + description.getMain() + " should extends GeyserExtension, but extends " + jarClass.getSuperclass().getSimpleName(), ex);
}
extension = extensionClass.newInstance();
} catch (IllegalAccessException ex) {
throw new InvalidExtensionException("No public constructor", ex);
} catch (InstantiationException ex) {
throw new InvalidExtensionException("Abnormal extension type", ex);
}
}
@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
return this.findClass(name, true);
}
protected Class<?> findClass(String name, boolean checkGlobal) throws ClassNotFoundException {
if (name.startsWith("org.geysermc.geyser.") || name.startsWith("org.geysermc.connector.") || name.startsWith("net.minecraft.")) {
throw new ClassNotFoundException(name);
}
Class<?> result = classes.get(name);
if(result == null) {
if(checkGlobal) {
result = loader.getClassByName(name);
}
if(result == null) {
result = super.findClass(name);
if (result != null) {
loader.setClass(name, result);
}
}
classes.put(name, result);
}
return result;
}
Set<String> getClasses() {
return classes.keySet();
}
}

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@ -0,0 +1,94 @@
/*
* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.geyser.extension;
import org.geysermc.geyser.extension.exception.InvalidDescriptionException;
import org.yaml.snakeyaml.DumperOptions;
import org.yaml.snakeyaml.Yaml;
import java.util.*;
public class ExtensionDescription {
private String name;
private String main;
private List<String> api;
private String version;
private final List<String> authors = new ArrayList<>();
public ExtensionDescription(String yamlString) throws InvalidDescriptionException {
DumperOptions dumperOptions = new DumperOptions();
dumperOptions.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
Yaml yaml = new Yaml(dumperOptions);
this.loadMap(yaml.loadAs(yamlString, LinkedHashMap.class));
}
private void loadMap(Map<String, Object> yamlMap) throws InvalidDescriptionException {
this.name = ((String) yamlMap.get("name")).replaceAll("[^A-Za-z0-9 _.-]", "");
if (this.name.equals("")) {
throw new InvalidDescriptionException("Invalid extension name");
}
this.name = this.name.replace(" ", "_");
this.version = String.valueOf(yamlMap.get("version"));
this.main = (String) yamlMap.get("main");
Object api = yamlMap.get("api");
if (api instanceof List) {
this.api = (List<String>) api;
} else {
List<String> list = new ArrayList<>();
list.add((String) api);
this.api = list;
}
if (yamlMap.containsKey("author")) {
this.authors.add((String) yamlMap.get("author"));
}
if (yamlMap.containsKey("authors")) {
this.authors.addAll((Collection<? extends String>) yamlMap.get("authors"));
}
}
public String getName() {
return this.name;
}
public String getMain() {
return this.main;
}
public List<String> getAPIVersions() {
return api;
}
public String getVersion() {
return this.version;
}
public List<String> getAuthors() {
return this.authors;
}
}

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@ -0,0 +1,173 @@
/*
* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.geyser.extension;
import org.geysermc.geyser.GeyserImpl;
import org.geysermc.geyser.extension.exception.InvalidDescriptionException;
import org.geysermc.geyser.extension.exception.InvalidExtensionException;
import java.io.*;
import java.util.HashMap;
import java.util.Map;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.regex.Pattern;
public class ExtensionLoader {
private final Map<String, Class> classes = new HashMap<>();
private final Map<String, ExtensionClassLoader> classLoaders = new HashMap<>();
public GeyserExtension loadExtension(File file) throws InvalidExtensionException {
if (file == null) {
throw new InvalidExtensionException("File is null");
}
if (!file.exists()) {
throw new InvalidExtensionException(new FileNotFoundException(file.getPath()) + " does not exist");
}
final ExtensionDescription description;
try {
description = getExtensionDescription(file);
} catch (InvalidDescriptionException e) {
throw new InvalidExtensionException(e);
}
final File parentFile = file.getParentFile();
final File dataFolder = new File(parentFile, description.getName());
if (dataFolder.exists() && !dataFolder.isDirectory()) {
throw new InvalidExtensionException("The folder " + dataFolder.getPath() + " is not a directory and is the data folder for the extension " + description.getName() + "!");
}
final ExtensionClassLoader loader;
try {
loader = new ExtensionClassLoader(this, getClass().getClassLoader(), description, file);
} catch (Throwable e) {
throw new InvalidExtensionException(e);
}
classLoaders.put(description.getName(), loader);
setup(loader.extension, description, dataFolder, file);
return loader.extension;
}
private void setup(GeyserExtension extension, ExtensionDescription description, File dataFolder, File file) {
extension.init(GeyserImpl.getInstance(), description, dataFolder, file, this);
extension.onLoad();
}
public ExtensionDescription getExtensionDescription(File file) throws InvalidDescriptionException {
JarFile jarFile = null;
InputStream stream = null;
try {
jarFile = new JarFile(file);
JarEntry descriptionEntry = jarFile.getJarEntry("extension.yml");
if (descriptionEntry == null) {
throw new InvalidDescriptionException(new FileNotFoundException("extension.yml") + " does not exist in the jar file!");
}
stream = jarFile.getInputStream(descriptionEntry);
InputStreamReader reader = new InputStreamReader(stream);
StringBuilder builder = new StringBuilder();
String temp;
BufferedReader bufferedReader = new BufferedReader(reader);
temp = bufferedReader.readLine();
while (temp != null) {
if (builder.length() != 0) {
builder.append("\n");
}
builder.append(temp);
temp = bufferedReader.readLine();
}
return new ExtensionDescription(builder.toString());
} catch (IOException e) {
throw new InvalidDescriptionException(e);
} finally {
if (jarFile != null) {
try {
jarFile.close();
} catch (IOException e) {
}
}
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}
public Pattern[] getExtensionFilters() {
return new Pattern[] { Pattern.compile("^.+\\.jar$") };
}
public Class<?> getClassByName(final String name) throws ClassNotFoundException{
Class<?> clazz = classes.get(name);
try {
for(ExtensionClassLoader loader : classLoaders.values()) {
try {
clazz = loader.findClass(name,false);
} catch(NullPointerException e) {
}
}
return clazz;
} catch(NullPointerException s) {
return null;
}
}
public void setClass(String name, final Class<?> clazz) {
if(!classes.containsKey(name)) {
classes.put(name,clazz);
}
}
protected void removeClass(String name) {
Class<?> clazz = classes.remove(name);
}
public void enableExtension(Extension extension) {
if (extension instanceof GeyserExtension) {
if(!extension.isEnabled()) {
GeyserImpl.getInstance().getLogger().info("Enabled extension " + extension.getDescription().getName());
((GeyserExtension) extension).setEnabled(true);
}
}
}
public void disableExtension(Extension extension) {
if (extension instanceof GeyserExtension) {
if(extension.isEnabled()) {
GeyserImpl.getInstance().getLogger().info("Disabled extension " + extension.getDescription().getName());
((GeyserExtension) extension).setEnabled(false);
}
}
}
}

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@ -0,0 +1,243 @@
/*
* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.geyser.extension;
import org.geysermc.geyser.GeyserImpl;
import java.io.File;
import java.io.FilenameFilter;
import java.lang.reflect.Constructor;
import java.util.*;
import java.util.regex.Pattern;
public class ExtensionManager {
private static ExtensionManager extensionManager = null;
protected Map<String, Extension> extensions = new LinkedHashMap<>();
protected Map<Pattern, ExtensionLoader> fileAssociations = new HashMap<>();
public static void init() {
GeyserImpl.getInstance().getLogger().info("Loading extensions...");
extensionManager = new ExtensionManager();
extensionManager.registerInterface(ExtensionLoader.class);
extensionManager.loadExtensions(new File("extensions"));
GeyserImpl.getInstance().getLogger().info("Loaded " + extensionManager.extensions.size() + " extensions.");
for (Extension extension : extensionManager.getExtensions().values()) {
if (!extension.isEnabled()) {
extensionManager.enableExtension(extension);
}
}
}
public static ExtensionManager getExtensionManager() {
return extensionManager;
}
public Extension getExtension(String name) {
if (this.extensions.containsKey(name)) {
return this.extensions.get(name);
}
return null;
}
public Map<String, Extension> getExtensions() {
return this.extensions;
}
public void registerInterface(Class<? extends ExtensionLoader> loader) {
ExtensionLoader instance;
if (ExtensionLoader.class.isAssignableFrom(loader)) {
Constructor<? extends ExtensionLoader> constructor;
try {
constructor = loader.getConstructor();
instance = constructor.newInstance();
} catch (NoSuchMethodException ex) { // This should never happen
String className = loader.getName();
throw new IllegalArgumentException("Class " + className + " does not have a public constructor", ex);
} catch (Exception ex) { // This should never happen
throw new IllegalArgumentException("Unexpected exception " + ex.getClass().getName() + " while attempting to construct a new instance of " + loader.getName(), ex);
}
} else {
throw new IllegalArgumentException("Class " + loader.getName() + " does not implement interface ExtensionLoader");
}
Pattern[] patterns = instance.getExtensionFilters();
synchronized (this) {
for (Pattern pattern : patterns) {
fileAssociations.put(pattern, instance);
}
}
}
public GeyserExtension loadExtension(File file, Map<Pattern, ExtensionLoader> loaders) {
for (ExtensionLoader loader : (loaders == null ? this.fileAssociations : loaders).values()) {
for (Pattern pattern : loader.getExtensionFilters()) {
if (pattern.matcher(file.getName()).matches()) {
try {
ExtensionDescription description = loader.getExtensionDescription(file);
if (description != null) {
GeyserExtension extension = loader.loadExtension(file);
if (extension != null) {
this.extensions.put(extension.getDescription().getName(), extension);
return extension;
}
}
} catch (Exception e) {
GeyserImpl.getInstance().getLogger().error("Could not load extension", e);
return null;
}
}
}
}
return null;
}
public Map<String, Extension> loadExtensions(File dictionary) {
if (GeyserImpl.VERSION.equalsIgnoreCase("dev")) {
GeyserImpl.getInstance().getLogger().error("Cannot load extensions in a development environment, aborting extension loading");
return new HashMap<>();
}
if (!GeyserImpl.VERSION.contains(".")) {
GeyserImpl.getInstance().getLogger().error("Something went wrong with the Geyser version number, aborting extension loading");
return new HashMap<>();
}
if (!dictionary.exists()) {
dictionary.mkdir();
}
if (!dictionary.isDirectory()) {
return new HashMap<>();
}
Map<String, File> extensions = new LinkedHashMap<>();
Map<String, Extension> loadedExtensions = new LinkedHashMap<>();
for (final ExtensionLoader loader : this.fileAssociations.values()) {
for (File file : dictionary.listFiles((dir, name) -> {
for (Pattern pattern : loader.getExtensionFilters()) {
if (pattern.matcher(name).matches()) {
return true;
}
}
return false;
})) {
if (file.isDirectory()) {
continue;
}
try {
ExtensionDescription description = loader.getExtensionDescription(file);
if (description != null) {
String name = description.getName();
if (extensions.containsKey(name) || this.getExtension(name) != null) {
GeyserImpl.getInstance().getLogger().warning("Found duplicate extension '" + name + "', ignoring '" + file.getName() + "'");
continue;
}
boolean compatible = false;
for (String version : description.getAPIVersions()) {
try {
//Check the format: majorVersion.minorVersion.patch
if (!Pattern.matches("^[0-9]+\\.[0-9]+\\.[0-9]+$", version)) {
throw new IllegalArgumentException();
}
} catch (NullPointerException | IllegalArgumentException e) {
GeyserImpl.getInstance().getLogger().error("Could't load extension " + name + ": Wrong API format");
continue;
}
String[] versionArray = version.split("\\.");
String[] apiVersion = GeyserImpl.VERSION.split("\\.");
//Completely different API version
if (!Objects.equals(Integer.valueOf(versionArray[0]), Integer.valueOf(apiVersion[0]))) {
GeyserImpl.getInstance().getLogger().error("Couldn't load extension " + name + ": Wrong API version, current version: " + apiVersion[0] + "." + apiVersion[1]);
continue;
}
//If the extension requires new API features, being backwards compatible
if (Integer.parseInt(versionArray[1]) > Integer.parseInt(apiVersion[1])) {
GeyserImpl.getInstance().getLogger().error("Couldn't load extension " + name + ": Wrong API version, current version: " + apiVersion[0] + "." + apiVersion[1]);
continue;
}
compatible = true;
break;
}
if (!compatible) {
GeyserImpl.getInstance().getLogger().error("Couldn't load extension " + name +": Incompatible API version");
}
extensions.put(name, file);
loadedExtensions.put(name, this.loadExtension(file, this.fileAssociations));
}
} catch (Exception e) {
GeyserImpl.getInstance().getLogger().error("Couldn't load " +file.getName()+ " in folder " + dictionary + ": ", e);
}
}
}
return loadedExtensions;
}
public void enableExtension(Extension extension) {
if (!extension.isEnabled()) {
try {
extension.getExtensionLoader().enableExtension(extension);
} catch (Exception e) {
GeyserImpl.getInstance().getLogger().error("Error enabling extension " + extension.getName() + ": ", e);
this.disableExtension(extension);
}
}
}
public void disableExtension(Extension extension) {
if (extension.isEnabled()) {
try {
extension.getExtensionLoader().disableExtension(extension);
} catch (Exception e) {
GeyserImpl.getInstance().getLogger().error("Error disabling extension " + extension.getName() + ": ", e);
}
}
}
public void disableExtensions() {
for (Extension extension : this.getExtensions().values()) {
this.disableExtension(extension);
}
}
}

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@ -0,0 +1,176 @@
/*
* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.geyser.extension;
import org.geysermc.geyser.GeyserImpl;
import java.io.*;
import java.net.URL;
import java.net.URLConnection;
public class GeyserExtension implements Extension {
private boolean initialized = false;
private boolean enabled = false;
private File file = null;
private File dataFolder = null;
private ClassLoader classLoader = null;
private GeyserImpl geyser = null;
private ExtensionLoader loader;
private ExtensionDescription description = null;
@Override
public void onLoad() {
}
@Override
public void onEnable() {
}
@Override
public void onDisable() {
}
@Override
public boolean isEnabled() {
return this.enabled;
}
public void setEnabled(boolean value) {
if (this.enabled != value) {
this.enabled = value;
if (this.enabled) {
onEnable();
} else {
onDisable();
}
}
}
@Override
public boolean isDisabled() {
return !this.enabled;
}
@Override
public File getDataFolder() {
return this.dataFolder;
}
@Override
public ExtensionDescription getDescription() {
return this.description;
}
@Override
public String getName() {
return this.description.getName();
}
public void init(GeyserImpl geyser, ExtensionDescription description, File dataFolder, File file, ExtensionLoader loader) {
if (!this.initialized) {
this.initialized = true;
this.file = file;
this.dataFolder = dataFolder;
this.classLoader = this.getClass().getClassLoader();
this.geyser = geyser;
this.loader = loader;
this.description = description;
}
}
@Override
public InputStream getResource(String filename) {
if (filename == null) {
throw new IllegalArgumentException("Filename cannot be null");
}
try {
URL url = this.classLoader.getResource(filename);
if (url == null) {
return null;
}
URLConnection connection = url.openConnection();
connection.setUseCaches(false);
return connection.getInputStream();
} catch (IOException ex) {
return null;
}
}
@Override
public void saveResource(String filename, boolean replace) {
if (filename == null || filename.equals("")) {
throw new IllegalArgumentException("ResourcePath cannot be null or empty");
}
filename = filename.replace('\\', '/');
InputStream in = getResource(filename);
if (in == null) {
throw new IllegalArgumentException("The embedded resource '" + filename + "' cannot be found in " + file);
}
File outFile = new File(dataFolder, filename);
int lastIndex = filename.lastIndexOf('/');
File outDir = new File(dataFolder, filename.substring(0, Math.max(lastIndex, 0)));
if (!outDir.exists()) {
outDir.mkdirs();
}
try {
if (!outFile.exists() || replace) {
OutputStream out = new FileOutputStream(outFile);
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
out.close();
in.close();
} else {
this.geyser.getLogger().warning("Could not save " + outFile.getName() + " to " + outFile + " because " + outFile.getName() + " already exists.");
}
} catch (IOException ex) {
this.geyser.getLogger().severe("Could not save " + outFile.getName() + " to " + outFile, ex);
}
}
@Override
public GeyserImpl getGeyser() {
return this.geyser;
}
@Override
public ClassLoader getClassLoader() {
return this.classLoader;
}
@Override
public ExtensionLoader getExtensionLoader() {
return this.loader;
}
}

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/*
* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.geyser.extension.exception;
public class InvalidDescriptionException extends Exception {
public InvalidDescriptionException(Throwable cause) {
super(cause);
}
public InvalidDescriptionException(String message) {
super(message);
}
public InvalidDescriptionException(String message, Throwable cause) {
super(message, cause);
}
}

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/*
* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.geyser.extension.exception;
public class InvalidExtensionException extends Exception {
public InvalidExtensionException(Throwable cause) {
super(cause);
}
public InvalidExtensionException(String message) {
super(message);
}
public InvalidExtensionException(String message, Throwable cause) {
super(message, cause);
}
}