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Retrieve the latest asset release version automatically (#1947)
* feat: retrieve the latest release version automatically (cherry picked from commit a8885a349a567849f6db29565cc65b14e3dab155) * feat/fix: validate hash of downloaded asset file * chore: address review comments Usage of nio Path instead of direct File access Usage of HexFormat instead of custom implementation No need for usage of channels * chore: simplified sha-1 calculation logic Co-authored-by: Pierre Maurice Schwang <mail@pschwang.eu>
This commit is contained in:
Alexander Brandes
GitHub
parent
c819031d1f
commit
1706d64ddf
@ -5,6 +5,9 @@ import com.fastasyncworldedit.core.configuration.Settings;
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import com.fastasyncworldedit.core.extent.filter.block.SingleFilterBlock;
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import com.fastasyncworldedit.core.util.image.ImageUtil;
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import com.google.gson.Gson;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonParser;
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import com.google.gson.reflect.TypeToken;
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import com.google.gson.stream.JsonReader;
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import com.sk89q.worldedit.extent.clipboard.Clipboard;
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@ -24,19 +27,27 @@ import org.apache.logging.log4j.Logger;
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import javax.imageio.ImageIO;
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import java.awt.image.BufferedImage;
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import java.io.BufferedInputStream;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileNotFoundException;
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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.io.InputStreamReader;
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import java.io.OutputStream;
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import java.lang.reflect.Type;
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import java.net.URL;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.security.DigestOutputStream;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.HexFormat;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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@ -321,6 +332,8 @@ public class TextureUtil implements TextureHolder {
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new BiomeColor(253, "Unknown Biome", 0.8f, 0.4f, 0x92BD59, 0x77AB2F),
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new BiomeColor(254, "Unknown Biome", 0.8f, 0.4f, 0x92BD59, 0x77AB2F),
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new BiomeColor(255, "Unknown Biome", 0.8f, 0.4f, 0x92BD59, 0x77AB2F)};
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private static final String VERSION_MANIFEST = "https://piston-meta.mojang.com/mc/game/version_manifest.json";
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private final BlockType[] layerBuffer = new BlockType[2];
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protected int[] blockColors = new int[BlockTypes.size()];
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protected long[] blockDistance = new long[BlockTypes.size()];
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@ -352,17 +365,43 @@ public class TextureUtil implements TextureHolder {
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try {
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LOGGER.info("Downloading asset jar from Mojang, please wait...");
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new File(Fawe.platform().getDirectory() + "/" + Settings.settings().PATHS.TEXTURES + "/").mkdirs();
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try (BufferedInputStream in = new BufferedInputStream(
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new URL("https://piston-data.mojang.com/v1/objects/c0898ec7c6a5a2eaa317770203a1554260699994/client.jar")
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.openStream());
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FileOutputStream fileOutputStream = new FileOutputStream(
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Fawe.platform().getDirectory() + "/" + Settings.settings().PATHS.TEXTURES + "/1.19.2.jar")) {
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byte[] dataBuffer = new byte[1024];
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int bytesRead;
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while ((bytesRead = in.read(dataBuffer, 0, 1024)) != -1) {
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fileOutputStream.write(dataBuffer, 0, bytesRead);
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try {
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VersionMetadata metadata = getLatestVersion();
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LOGGER.info("Latest release version is {}", metadata.version());
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HashedResource resource = getLatestClientJarUrl(metadata);
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Path out = Path.of(
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Fawe.platform().getDirectory().getPath(),
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Settings.settings().PATHS.TEXTURES,
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metadata.version() + ".jar"
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);
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// Copy resource to local fs
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try (final InputStream stream = new URL(resource.resource()).openStream();
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final OutputStream writer = Files.newOutputStream(out)) {
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stream.transferTo(writer);
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}
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LOGGER.info("Asset jar down has been downloaded successfully.");
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// Validate sha-1 hash
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try {
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final String sha1 = calculateSha1(out);
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if (!sha1.equals(resource.hash())) {
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Files.deleteIfExists(out);
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LOGGER.error(
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"Hash comparison of final file failed (Expected: '{}', Calculated: '{}')",
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resource.hash(), sha1
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);
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LOGGER.error("To prevent possibly malicious intentions, the downloaded file has been removed");
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return;
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}
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} catch (NoSuchAlgorithmException e) {
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LOGGER.warn("Couldn't verify integrity of downloaded client file");
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LOGGER.warn(
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"Please verify that the downloaded files '{}' hash is equal to '{}'",
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out, resource.hash()
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);
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return;
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}
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LOGGER.info("Asset jar has been downloaded and validated successfully.");
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} catch (IOException e) {
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LOGGER.error(
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"Could not download version jar. Please do so manually by creating a `FastAsyncWorldEdit/textures` " +
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@ -555,6 +594,66 @@ public class TextureUtil implements TextureHolder {
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return totalDistSqr / area;
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}
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/**
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* Retrieves the minecraft versions manifest (containing all released versions) and returns the first {@code release}
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* version (latest)
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*
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* @return {@link VersionMetadata} containing the id (= version) and url to the client manifest itself
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* @throws IOException If any http / i/o operation fails.
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* @since TODO
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*/
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private static VersionMetadata getLatestVersion() throws IOException {
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try (BufferedInputStream in = new BufferedInputStream(new URL(VERSION_MANIFEST).openStream());
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BufferedReader reader = new BufferedReader(new InputStreamReader(in))) {
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final JsonElement element = JsonParser.parseReader(reader);
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for (final JsonElement versions : element.getAsJsonObject().getAsJsonArray("versions")) {
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JsonObject version = versions.getAsJsonObject();
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if (!version.get("type").getAsString().equals("release")) {
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continue;
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}
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final String clientJsonUrl = version.get("url").getAsString();
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final String id = version.get("id").getAsString();
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return new VersionMetadata(id, clientJsonUrl);
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}
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}
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throw new IOException("Failed to get latest version metadata");
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}
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/**
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* Retrieves the url to the client.jar based on the previously retrieved {@link VersionMetadata}
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*
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* @param metadata The version metadata containing the url to the client.jar
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* @return The full url to the client.jar including the expected file hash for validation purposes
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* @throws IOException If any http / i/o operation fails.
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* @since TODO
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*/
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private static HashedResource getLatestClientJarUrl(VersionMetadata metadata) throws IOException {
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try (BufferedInputStream in = new BufferedInputStream(new URL(metadata.url()).openStream());
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BufferedReader reader = new BufferedReader(new InputStreamReader(in))) {
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final JsonObject object = JsonParser.parseReader(reader).getAsJsonObject();
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final JsonObject client = object.getAsJsonObject("downloads").getAsJsonObject("client");
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return new HashedResource(client.get("url").getAsString(), client.get("sha1").getAsString());
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}
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}
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/**
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* Calculates the sha-1 hash based on the content of the provided file.
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*
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* @param path The path of the resource to generate the sha-1 hash for
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* @return The hash of the file contents
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* @throws NoSuchAlgorithmException If the SHA-1 algorithm could not be resolved
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* @throws IOException If any I/O operation failed
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* @since TODO
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*/
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private static String calculateSha1(Path path) throws NoSuchAlgorithmException, IOException {
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MessageDigest digest = MessageDigest.getInstance("SHA-1");
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try (final BufferedInputStream stream = new BufferedInputStream(Files.newInputStream(path));
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final DigestOutputStream digestOutputStream = new DigestOutputStream(OutputStream.nullOutputStream(), digest)) {
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stream.transferTo(digestOutputStream);
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return HexFormat.of().formatHex(digest.digest());
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}
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}
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@Override
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public TextureUtil getTextureUtil() {
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return this;
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@ -1130,4 +1229,12 @@ public class TextureUtil implements TextureHolder {
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}
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private record VersionMetadata(String version, String url) {
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}
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private record HashedResource(String resource, String hash) {
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}
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}
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