Forge xz library supported

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameLibrariesTask.java

@@ -62,9 +62,7 @@ public final class GameLibrariesTask extends Task {
         version.getLibraries().stream().filter(Library::appliesToCurrentEnvironment).forEach(library -> {
             File file = dependencyManager.getGameRepository().getLibraryFile(version, library);
             if (!file.exists())
-                dependencies.add(new FileDownloadTask(
+                dependencies.add(new LibraryDownloadTask(dependencyManager, file, library));
-                        NetworkUtils.toURL(dependencyManager.getDownloadProvider().injectURL(library.getDownload().getUrl())),
-                        file, dependencyManager.getProxy(), library.getDownload().getSha1()));
         });
     }
 

HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibraryDownloadTask.java

@@ -0,0 +1,161 @@
+package org.jackhuang.hmcl.download.game;
+
+import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
+import org.jackhuang.hmcl.download.AbstractDependencyManager;
+import org.jackhuang.hmcl.game.Library;
+import org.jackhuang.hmcl.task.FileDownloadTask;
+import org.jackhuang.hmcl.task.Scheduler;
+import org.jackhuang.hmcl.task.Schedulers;
+import org.jackhuang.hmcl.task.Task;
+import org.jackhuang.hmcl.util.*;
+
+import java.io.*;
+import java.nio.charset.Charset;
+import java.util.*;
+import java.util.jar.JarEntry;
+import java.util.jar.JarInputStream;
+import java.util.jar.JarOutputStream;
+import java.util.jar.Pack200;
+
+public final class LibraryDownloadTask extends Task {
+    private final FileDownloadTask xzTask;
+    private final FileDownloadTask task;
+    private final File jar;
+    private final File xzFile;
+    private final Library library;
+
+    public LibraryDownloadTask(AbstractDependencyManager dependencyManager, File file, Library library) {
+        String url = dependencyManager.getDownloadProvider().injectURL(library.getDownload().getUrl());
+        jar = file;
+        this.library = library;
+        xzFile = new File(file.getAbsoluteFile().getParentFile(), file.getName() + ".pack.xz");
+
+        xzTask = new FileDownloadTask(NetworkUtils.toURL(url + ".pack.xz"),
+                xzFile, dependencyManager.getProxy(), null, 1);
+
+        task = new FileDownloadTask(NetworkUtils.toURL(url + ".pack.xz"),
+                file, dependencyManager.getProxy(), library.getDownload().getSha1());
+    }
+
+    @Override
+    public Collection<? extends Task> getDependents() {
+        return Collections.singleton(xzTask);
+    }
+
+    @Override
+    public boolean isRelyingOnDependents() {
+        return false;
+    }
+
+    @Override
+    public Scheduler getScheduler() {
+        return Schedulers.io();
+    }
+
+    @Override
+    public void execute() throws Exception {
+        if (isDependentsSucceeded()) {
+            unpackLibrary(jar, FileUtils.readBytes(xzFile));
+            if (!checksumValid(jar, library.getChecksums()))
+                throw new IOException("Checksum failed for " + library);
+        }
+    }
+
+    @Override
+    public Collection<? extends Task> getDependencies() {
+        return isDependentsSucceeded() ? Collections.emptySet() : Collections.singleton(task);
+    }
+
+    private static boolean checksumValid(File libPath, List<String> checksums) {
+        try {
+            if ((checksums == null) || (checksums.isEmpty())) {
+                return true;
+            }
+            byte[] fileData = FileUtils.readBytes(libPath);
+            boolean valid = checksums.contains(DigestUtils.sha1Hex(fileData));
+            if ((!valid) && (libPath.getName().endsWith(".jar"))) {
+            }
+            return validateJar(fileData, checksums);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return false;
+    }
+
+    private static boolean validateJar(byte[] data, List<String> checksums) throws IOException {
+        HashMap<String, String> files = new HashMap<>();
+        String[] hashes = null;
+        JarInputStream jar = new JarInputStream(new ByteArrayInputStream(data));
+        JarEntry entry = jar.getNextJarEntry();
+        while (entry != null) {
+            byte[] eData = IOUtils.readFullyAsByteArray(jar);
+            if (entry.getName().equals("checksums.sha1")) {
+                hashes = new String(eData, Charset.forName("UTF-8")).split("\n");
+            }
+            if (!entry.isDirectory()) {
+                files.put(entry.getName(), DigestUtils.sha1Hex(eData));
+            }
+            entry = jar.getNextJarEntry();
+        }
+        jar.close();
+        if (hashes != null) {
+            boolean passed = !checksums.contains(files.get("checksums.sha1"));
+            if (passed) {
+                for (String hash : hashes) {
+                    if ((!hash.trim().equals("")) && (hash.contains(" "))) {
+                        String[] e = hash.split(" ");
+                        String validChecksum = e[0];
+                        String target = hash.substring(validChecksum.length() + 1);
+                        String checksum = files.get(target);
+                        if ((!files.containsKey(target)) || (checksum == null)) {
+                            Logging.LOG.warning("    " + target + " : missing");
+                            passed = false;
+                            break;
+                        } else if (!checksum.equals(validChecksum)) {
+                            Logging.LOG.warning("    " + target + " : failed (" + checksum + ", " + validChecksum + ")");
+                            passed = false;
+                            break;
+                        }
+                    }
+                }
+            }
+            return passed;
+        }
+        return false;
+    }
+
+    private static void unpackLibrary(File dest, byte[] src) throws IOException {
+        if (dest.exists())
+            if (!dest.delete())
+                throw new IOException("Unable to delete file " + dest);
+
+        byte[] decompressed = IOUtils.readFullyAsByteArray(new XZCompressorInputStream(new ByteArrayInputStream(src)));
+
+        String end = new String(decompressed, decompressed.length - 4, 4);
+        if (!end.equals("SIGN"))
+            throw new IOException("Unpacking failed, signature missing " + end);
+
+        int x = decompressed.length;
+        int len = decompressed[(x - 8)] & 0xFF | (decompressed[(x - 7)] & 0xFF) << 8 | (decompressed[(x - 6)] & 0xFF) << 16 | (decompressed[(x - 5)] & 0xFF) << 24;
+
+        File temp = FileUtils.createTempFile("minecraft", ".pack");
+
+        byte[] checksums = Arrays.copyOfRange(decompressed, decompressed.length - len - 8, decompressed.length - 8);
+
+        OutputStream out = new FileOutputStream(temp);
+        out.write(decompressed, 0, decompressed.length - len - 8);
+        out.close();
+
+        try (FileOutputStream jarBytes = new FileOutputStream(dest); JarOutputStream jos = new JarOutputStream(jarBytes)) {
+            Pack200.newUnpacker().unpack(temp, jos);
+
+            JarEntry checksumsFile = new JarEntry("checksums.sha1");
+            checksumsFile.setTime(0L);
+            jos.putNextEntry(checksumsFile);
+            jos.write(checksums);
+            jos.closeEntry();
+        }
+
+        temp.delete();
+    }
+}

HMCLCore/src/main/java/org/jackhuang/hmcl/game/ClassicVersion.java

@@ -40,7 +40,7 @@ public class ClassicVersion extends Version {
         public ClassicLibrary(String name) {
             super("", "", "", null, null,
                     new LibrariesDownloadInfo(new LibraryDownloadInfo("bin/" + name + ".jar"), null),
-                    false, null, null, null);
+                    false, null, null, null, null);
         }
     }
 

HMCLCore/src/main/java/org/jackhuang/hmcl/game/Library.java

@@ -48,6 +48,7 @@ public class Library implements Comparable<Library> {
     private final boolean lateload;
     private final Map<OperatingSystem, String> natives;
     private final List<CompatibilityRule> rules;
+    private final List<String> checksums;
 
     private final String path;
 
@@ -60,10 +61,10 @@ public class Library implements Comparable<Library> {
     }
 
     public Library(String groupId, String artifactId, String version, String classifier, String url, LibrariesDownloadInfo downloads, boolean lateload) {
-        this(groupId, artifactId, version, classifier, url, downloads, lateload, null, null, null);
+        this(groupId, artifactId, version, classifier, url, downloads, lateload, null, null, null, null);
     }
 
-    public Library(String groupId, String artifactId, String version, String classifier, String url, LibrariesDownloadInfo downloads, boolean lateload, ExtractRules extract, Map<OperatingSystem, String> natives, List<CompatibilityRule> rules) {
+    public Library(String groupId, String artifactId, String version, String classifier, String url, LibrariesDownloadInfo downloads, boolean lateload, List<String> checksums, ExtractRules extract, Map<OperatingSystem, String> natives, List<CompatibilityRule> rules) {
         this.groupId = groupId;
         this.artifactId = artifactId;
         this.version = version;
@@ -80,6 +81,7 @@ public class Library implements Comparable<Library> {
         this.lateload = lateload;
         this.natives = natives;
         this.rules = rules;
+        this.checksums = checksums;
 
         LibraryDownloadInfo temp = null;
         if (downloads != null)
@@ -141,6 +143,10 @@ public class Library implements Comparable<Library> {
         return lateload;
     }
 
+    public List<String> getChecksums() {
+        return checksums;
+    }
+
     @Override
     public String toString() {
         return new ToStringBuilder(this).append("name", getName()).toString();
@@ -169,15 +175,15 @@ public class Library implements Comparable<Library> {
     }
 
     public static Library fromName(String name) {
-        return fromName(name, null, null, null, null, null);
+        return fromName(name, null, null, null, null, null, null);
     }
 
-    public static Library fromName(String name, String url, LibrariesDownloadInfo downloads, ExtractRules extract, Map<OperatingSystem, String> natives, List<CompatibilityRule> rules) {
+    public static Library fromName(String name, String url, LibrariesDownloadInfo downloads, List<String> checksums, ExtractRules extract, Map<OperatingSystem, String> natives, List<CompatibilityRule> rules) {
         String[] arr = name.split(":", 4);
         if (arr.length != 3 && arr.length != 4)
             throw new IllegalArgumentException("Library name is malformed. Correct example: group:artifact:version(:classifier).");
 
-        return new Library(arr[0].replace("\\", "/"), arr[1], arr[2], arr.length >= 4 ? arr[3] : null, url, downloads, false, extract, natives, rules);
+        return new Library(arr[0].replace("\\", "/"), arr[1], arr[2], arr.length >= 4 ? arr[3] : null, url, downloads, false, checksums, extract, natives, rules);
     }
 
     public static class Serializer implements JsonDeserializer<Library>, JsonSerializer<Library> {
@@ -198,6 +204,8 @@ public class Library implements Comparable<Library> {
                     jsonObject.get("name").getAsString(),
                     jsonObject.has("url") ? jsonObject.get("url").getAsString() : null,
                     context.deserialize(jsonObject.get("downloads"), LibrariesDownloadInfo.class),
+                    context.deserialize(jsonObject.get("checksums"), new TypeToken<List<String>>() {
+                    }.getType()),
                     context.deserialize(jsonObject.get("extract"), ExtractRules.class),
                     context.deserialize(jsonObject.get("natives"), new TypeToken<Map<OperatingSystem, String>>() {
                     }.getType()),

HMCLCore/src/main/java/org/jackhuang/hmcl/task/TaskExecutor.java

@@ -153,7 +153,10 @@ public final class TaskExecutor {
             try {
                 task.getScheduler().schedule(task::execute).get();
             } catch (ExecutionException e) {
-                throw (Exception) e.getCause();
+                if (e.getCause() instanceof Exception)
+                    throw (Exception) e.getCause();
+                else
+                    throw e;
             }
 
             if (task instanceof TaskResult<?>) {

build.gradle

@@ -49,6 +49,7 @@ allprojects {
     dependencies {
         compile "com.google.code.gson:gson:2.8.2"
         compile "org.apache.commons:commons-compress:1.15"
+        compile "org.tukaani:xz:1.2"
         testCompile group: 'junit', name: 'junit', version: '4.12'
     }