mirror of https://github.com/GeyserMC/Geyser.git
175 lines
6.3 KiB
Java
175 lines
6.3 KiB
Java
/*
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* Copyright (c) 2019-2020 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.connector.utils;
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import com.fasterxml.jackson.core.JsonFactory;
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import com.fasterxml.jackson.core.JsonParser;
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import com.fasterxml.jackson.databind.DeserializationFeature;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
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import org.geysermc.connector.GeyserConnector;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.file.Files;
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import java.security.MessageDigest;
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import java.util.function.Function;
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public class FileUtils {
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/**
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* Load the given YAML file into the given class
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*
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* @param src File to load
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* @param valueType Class to load file into
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* @return The data as the given class
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* @throws IOException if the config could not be loaded
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*/
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public static <T> T loadConfig(File src, Class<T> valueType) throws IOException {
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ObjectMapper objectMapper = new ObjectMapper(new YAMLFactory());
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return objectMapper.readValue(src, valueType);
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}
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public static <T> T loadYaml(InputStream src, Class<T> valueType) throws IOException {
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ObjectMapper objectMapper = new ObjectMapper(new YAMLFactory()).enable(JsonParser.Feature.IGNORE_UNDEFINED).disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
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return objectMapper.readValue(src, valueType);
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}
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public static <T> T loadJson(InputStream src, Class<T> valueType) throws IOException {
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ObjectMapper objectMapper = new ObjectMapper(new JsonFactory()).enable(JsonParser.Feature.IGNORE_UNDEFINED).enable(JsonParser.Feature.ALLOW_COMMENTS).disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
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return objectMapper.readValue(src, valueType);
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}
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/**
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* Open the specified file or copy if from resources
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*
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* @param name File and resource name
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* @param fallback Formatting callback
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* @return File handle of the specified file
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* @throws IOException if the file failed to copy from resource
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*/
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public static File fileOrCopiedFromResource(String name, Function<String, String> fallback) throws IOException {
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return fileOrCopiedFromResource(new File(name), name, fallback);
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}
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/**
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* Open the specified file or copy if from resources
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*
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* @param file File to open
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* @param name Name of the resource get if needed
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* @param format Formatting callback
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* @return File handle of the specified file
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* @throws IOException if the file failed to copy from resource
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*/
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public static File fileOrCopiedFromResource(File file, String name, Function<String, String> format) throws IOException {
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if (!file.exists()) {
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file.createNewFile();
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FileOutputStream fos = new FileOutputStream(file);
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InputStream input = GeyserConnector.class.getResourceAsStream("/" + name); // resources need leading "/" prefix
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byte[] bytes = new byte[input.available()];
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input.read(bytes);
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for(char c : format.apply(new String(bytes)).toCharArray()) {
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fos.write(c);
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}
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fos.flush();
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input.close();
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fos.close();
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}
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return file;
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}
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/**
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* Writes the given data to the specified file on disk
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*
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* @param file File to write to
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* @param data Data to write to the file
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* @throws IOException if the file failed to write
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*/
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public static void writeFile(File file, char[] data) throws IOException {
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if (!file.exists()) {
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file.createNewFile();
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}
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FileOutputStream fos = new FileOutputStream(file);
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for (char c : data) {
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fos.write(c);
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}
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fos.flush();
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fos.close();
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}
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/**
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* Writes the given data to the specified file on disk
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*
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* @param name File path to write to
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* @param data Data to write to the file
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* @throws IOException if the file failed to write
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*/
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public static void writeFile(String name, char[] data) throws IOException {
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writeFile(new File(name), data);
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}
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/**
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* Get an InputStream for the given resource path, throws AssertionError if resource is not found
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*
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* @param resource Resource to get
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* @return InputStream of the given resource
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*/
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public static InputStream getResource(String resource) {
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InputStream stream = FileUtils.class.getClassLoader().getResourceAsStream(resource);
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if (stream == null) {
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throw new AssertionError("Unable to find resource: " + resource);
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}
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return stream;
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}
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/**
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* Calculate the SHA256 hash of the resource pack file
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* @param file File to calculate the hash for
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* @return A byte[] representation of the hash
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*/
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public static byte[] calculateSHA256(File file) {
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byte[] sha256;
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try {
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sha256 = MessageDigest.getInstance("SHA-256").digest(Files.readAllBytes(file.toPath()));
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} catch (Exception e) {
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throw new RuntimeException("Could not calculate pack hash", e);
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}
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return sha256;
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}
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}
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