Merge branch 'develop' of https://github.com/PrismLauncher/PrismLauncher into metadata2

.github/workflows/backport.yml

@@ -25,7 +25,7 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Create backport PRs
-        uses: korthout/backport-action@v3.0.2
+        uses: korthout/backport-action@v3.1.0
         with:
           # Config README: https://github.com/korthout/backport-action#backport-action
           pull_description: |-

.github/workflows/build.yml

@@ -79,7 +79,7 @@ jobs:
             qt_ver: 6
             qt_host: windows
             qt_arch: ""
-            qt_version: "6.7.1"
+            qt_version: "6.7.2"
             qt_modules: "qt5compat qtimageformats qtnetworkauth"
 
           - os: windows-2022
@@ -90,7 +90,7 @@ jobs:
             qt_ver: 6
             qt_host: windows
             qt_arch: "win64_msvc2019_arm64"
-            qt_version: "6.7.1"
+            qt_version: "6.7.2"
             qt_modules: "qt5compat qtimageformats qtnetworkauth"
 
           - os: macos-12
@@ -99,7 +99,7 @@ jobs:
             qt_ver: 6
             qt_host: mac
             qt_arch: ""
-            qt_version: "6.7.1"
+            qt_version: "6.7.2"
             qt_modules: "qt5compat qtimageformats qtnetworkauth"
 
           - os: macos-12
@@ -160,7 +160,7 @@ jobs:
 
       - name: Setup ccache
         if: (runner.os != 'Windows' || matrix.msystem == '') && inputs.build_type == 'Debug'
-        uses: hendrikmuhs/ccache-action@v1.2.13
+        uses: hendrikmuhs/ccache-action@v1.2.14
         with:
           key: ${{ matrix.os }}-qt${{ matrix.qt_ver }}-${{ matrix.architecture }}
 
@@ -266,23 +266,23 @@ jobs:
       - name: Configure CMake (macOS)
         if: runner.os == 'macOS' && matrix.qt_ver == 6
         run: |
-          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=${{ env.INSTALL_DIR }} -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DLauncher_BUILD_PLATFORM=official -DCMAKE_C_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DCMAKE_CXX_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DLauncher_QT_VERSION_MAJOR=${{ matrix.qt_ver }} -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" -G Ninja
+          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=${{ env.INSTALL_DIR }} -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DENABLE_JAVA_DOWNLOADER=ON -DLauncher_BUILD_PLATFORM=official -DCMAKE_C_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DCMAKE_CXX_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DLauncher_QT_VERSION_MAJOR=${{ matrix.qt_ver }} -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" -G Ninja
 
       - name: Configure CMake (macOS-Legacy)
         if: runner.os == 'macOS' && matrix.qt_ver == 5
         run: |
-          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=${{ env.INSTALL_DIR }} -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DLauncher_BUILD_PLATFORM=official -DCMAKE_C_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DCMAKE_CXX_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DLauncher_QT_VERSION_MAJOR=${{ matrix.qt_ver }} -DMACOSX_SPARKLE_UPDATE_PUBLIC_KEY="" -DMACOSX_SPARKLE_UPDATE_FEED_URL="" -G Ninja
+          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=${{ env.INSTALL_DIR }} -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DENABLE_JAVA_DOWNLOADER=ON -DLauncher_BUILD_PLATFORM=official -DCMAKE_C_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DCMAKE_CXX_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DLauncher_QT_VERSION_MAJOR=${{ matrix.qt_ver }} -DMACOSX_SPARKLE_UPDATE_PUBLIC_KEY="" -DMACOSX_SPARKLE_UPDATE_FEED_URL="" -G Ninja
 
       - name: Configure CMake (Windows MinGW-w64)
         if: runner.os == 'Windows' && matrix.msystem != ''
         shell: msys2 {0}
         run: |
-          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=${{ env.INSTALL_DIR }} -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DLauncher_BUILD_PLATFORM=official -DCMAKE_C_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DCMAKE_CXX_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DLauncher_QT_VERSION_MAJOR=6 -DCMAKE_OBJDUMP=/mingw64/bin/objdump.exe -DLauncher_BUILD_ARTIFACT=${{ matrix.name }}-Qt${{ matrix.qt_ver }} -G Ninja
+          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=${{ env.INSTALL_DIR }} -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DENABLE_JAVA_DOWNLOADER=ON -DLauncher_BUILD_PLATFORM=official -DCMAKE_C_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DCMAKE_CXX_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DLauncher_QT_VERSION_MAJOR=6 -DCMAKE_OBJDUMP=/mingw64/bin/objdump.exe -DLauncher_BUILD_ARTIFACT=${{ matrix.name }}-Qt${{ matrix.qt_ver }} -G Ninja
 
       - name: Configure CMake (Windows MSVC)
         if: runner.os == 'Windows' && matrix.msystem == ''
         run: |
-          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=${{ env.INSTALL_DIR }} -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DLauncher_BUILD_PLATFORM=official -DLauncher_QT_VERSION_MAJOR=${{ matrix.qt_ver }} -DCMAKE_MSVC_RUNTIME_LIBRARY="MultiThreadedDLL" -A${{ matrix.architecture}} -DLauncher_FORCE_BUNDLED_LIBS=ON  -DLauncher_BUILD_ARTIFACT=${{ matrix.name }}-Qt${{ matrix.qt_ver }}
+          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=${{ env.INSTALL_DIR }} -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DENABLE_JAVA_DOWNLOADER=ON -DLauncher_BUILD_PLATFORM=official -DLauncher_QT_VERSION_MAJOR=${{ matrix.qt_ver }} -DCMAKE_MSVC_RUNTIME_LIBRARY="MultiThreadedDLL" -A${{ matrix.architecture}} -DLauncher_FORCE_BUNDLED_LIBS=ON  -DLauncher_BUILD_ARTIFACT=${{ matrix.name }}-Qt${{ matrix.qt_ver }}
           # https://github.com/ccache/ccache/wiki/MS-Visual-Studio (I coudn't figure out the compiler prefix)
           if ("${{ env.CCACHE_VAR }}")
           {
@@ -297,7 +297,7 @@ jobs:
       - name: Configure CMake (Linux)
         if: runner.os == 'Linux'
         run: |
-          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DLauncher_BUILD_PLATFORM=official -DCMAKE_C_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DCMAKE_CXX_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DLauncher_QT_VERSION_MAJOR=${{ matrix.qt_ver }} -DLauncher_BUILD_ARTIFACT=Linux-Qt${{ matrix.qt_ver }} -G Ninja
+          cmake -S . -B ${{ env.BUILD_DIR }} -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=${{ inputs.build_type }} -DENABLE_LTO=ON -DENABLE_JAVA_DOWNLOADER=ON -DLauncher_BUILD_PLATFORM=official -DCMAKE_C_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DCMAKE_CXX_COMPILER_LAUNCHER=${{ env.CCACHE_VAR }} -DLauncher_QT_VERSION_MAJOR=${{ matrix.qt_ver }} -DLauncher_BUILD_ARTIFACT=Linux-Qt${{ matrix.qt_ver }} -G Ninja
 
       ##
       # BUILD

.github/workflows/update-flake.yml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
 
-      - uses: DeterminateSystems/update-flake-lock@v22
+      - uses: DeterminateSystems/update-flake-lock@v23
         with:
           commit-msg: "chore(nix): update lockfile"
           pr-title: "chore(nix): update lockfile"

CMakeLists.txt

@@ -219,6 +219,19 @@ set(Launcher_SUBREDDIT_URL "https://prismlauncher.org/reddit" CACHE STRING "URL
 set(Launcher_FORCE_BUNDLED_LIBS OFF CACHE BOOL "Prevent using system libraries, if they are available as submodules")
 set(Launcher_QT_VERSION_MAJOR "6" CACHE STRING "Major Qt version to build against")
 
+# Java downloader
+set(ENABLE_JAVA_DOWNLOADER_DEFAULT ON)
+
+# Although we recommend enabling this, we cannot guarantee binary compatibility on 
+# differing Linux/BSD/etc distributions. Downstream packagers should be explicitly opt-ing into this
+# feature if they know it will work with their distribution.
+if(UNIX AND NOT APPLE)
+  set(ENABLE_JAVA_DOWNLOADER_DEFAULT OFF)
+endif()
+
+# Java downloader
+option(ENABLE_JAVA_DOWNLOADER "Build the java downloader feature" ${ENABLE_JAVA_DOWNLOADER_DEFAULT})
+
 # Native libraries
 if(UNIX AND APPLE)
     set(Launcher_GLFW_LIBRARY_NAME "libglfw.dylib" CACHE STRING "Name of native glfw library")

buildconfig/BuildConfig.cpp.in

@@ -81,6 +81,9 @@ Config::Config()
         UPDATER_ENABLED = true;
     }
 
+    #cmakedefine01 ENABLE_JAVA_DOWNLOADER
+    JAVA_DOWNLOADER_ENABLED = ENABLE_JAVA_DOWNLOADER;
+
     GIT_COMMIT = "@Launcher_GIT_COMMIT@";
     GIT_TAG = "@Launcher_GIT_TAG@";
     GIT_REFSPEC = "@Launcher_GIT_REFSPEC@";

buildconfig/BuildConfig.h

@@ -67,6 +67,7 @@ class Config {
     QString VERSION_CHANNEL;
 
     bool UPDATER_ENABLED = false;
+    bool JAVA_DOWNLOADER_ENABLED = false;
 
     /// A short string identifying this build's platform or distribution.
     QString BUILD_PLATFORM;

flake.lock

@@ -23,11 +23,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1719994518,
+        "lastModified": 1722555600,
-        "narHash": "sha256-pQMhCCHyQGRzdfAkdJ4cIWiw+JNuWsTX7f0ZYSyz0VY=",
+        "narHash": "sha256-XOQkdLafnb/p9ij77byFQjDf5m5QYl9b2REiVClC+x4=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "9227223f6d922fee3c7b190b2cc238a99527bbb7",
+        "rev": "8471fe90ad337a8074e957b69ca4d0089218391d",
         "type": "github"
       },
       "original": {
@@ -75,11 +75,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1720768451,
+        "lastModified": 1723637854,
-        "narHash": "sha256-EYekUHJE2gxeo2pM/zM9Wlqw1Uw2XTJXOSAO79ksc4Y=",
+        "narHash": "sha256-med8+5DSWa2UnOqtdICndjDAEjxr5D7zaIiK4pn0Q7c=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "7e7c39ea35c5cdd002cd4588b03a3fb9ece6fad9",
+        "rev": "c3aa7b8938b17aebd2deecf7be0636000d62a2b9",
         "type": "github"
       },
       "original": {
@@ -103,11 +103,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1720524665,
+        "lastModified": 1723803910,
-        "narHash": "sha256-ni/87oHPZm6Gv0ECYxr1f6uxB0UKBWJ6HvS7lwLU6oY=",
+        "narHash": "sha256-yezvUuFiEnCFbGuwj/bQcqg7RykIEqudOy/RBrId0pc=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "8d6a17d0cdf411c55f12602624df6368ad86fac1",
+        "rev": "bfef0ada09e2c8ac55bbcd0831bd0c9d42e651ba",
         "type": "github"
       },
       "original": {

launcher/Application.cpp

@@ -44,10 +44,10 @@
 #include "BuildConfig.h"
 
 #include "DataMigrationTask.h"
+#include "java/JavaInstallList.h"
 #include "net/PasteUpload.h"
 #include "pathmatcher/MultiMatcher.h"
 #include "pathmatcher/SimplePrefixMatcher.h"
-#include "settings/INIFile.h"
 #include "tools/GenericProfiler.h"
 #include "ui/InstanceWindow.h"
 #include "ui/MainWindow.h"
@@ -106,7 +106,7 @@
 #include "icons/IconList.h"
 #include "net/HttpMetaCache.h"
 
-#include "java/JavaUtils.h"
+#include "java/JavaInstallList.h"
 
 #include "updater/ExternalUpdater.h"
 
@@ -126,6 +126,7 @@
 
 #include <stdlib.h>
 #include <sys.h>
+#include "SysInfo.h"
 
 #ifdef Q_OS_LINUX
 #include <dlfcn.h>
@@ -151,6 +152,7 @@
 #endif
 
 #if defined Q_OS_WIN32
+#include <windows.h>
 #include "WindowsConsole.h"
 #endif
 
@@ -236,6 +238,7 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
         { { { "d", "dir" }, "Use a custom path as application root (use '.' for current directory)", "directory" },
           { { "l", "launch" }, "Launch the specified instance (by instance ID)", "instance" },
           { { "s", "server" }, "Join the specified server on launch (only valid in combination with --launch)", "address" },
+          { { "w", "world" }, "Join the specified world on launch (only valid in combination with --launch)", "world" },
           { { "a", "profile" }, "Use the account specified by its profile name (only valid in combination with --launch)", "profile" },
           { "alive", "Write a small '" + liveCheckFile + "' file after the launcher starts" },
           { { "I", "import" }, "Import instance or resource from specified local path or URL", "url" },
@@ -250,6 +253,7 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
 
     m_instanceIdToLaunch = parser.value("launch");
     m_serverToJoin = parser.value("server");
+    m_worldToJoin = parser.value("world");
     m_profileToUse = parser.value("profile");
     m_liveCheck = parser.isSet("alive");
 
@@ -265,7 +269,7 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
     }
 
     // error if --launch is missing with --server or --profile
-    if ((!m_serverToJoin.isEmpty() || !m_profileToUse.isEmpty()) && m_instanceIdToLaunch.isEmpty()) {
+    if (((!m_serverToJoin.isEmpty() || !m_worldToJoin.isEmpty()) || !m_profileToUse.isEmpty()) && m_instanceIdToLaunch.isEmpty()) {
         std::cerr << "--server and --profile can only be used in combination with --launch!" << std::endl;
         m_status = Application::Failed;
         return;
@@ -385,6 +389,8 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
 
                 if (!m_serverToJoin.isEmpty()) {
                     launch.args["server"] = m_serverToJoin;
+                } else if (!m_worldToJoin.isEmpty()) {
+                    launch.args["world"] = m_worldToJoin;
                 }
                 if (!m_profileToUse.isEmpty()) {
                     launch.args["profile"] = m_profileToUse;
@@ -523,6 +529,8 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
         }
         if (!m_serverToJoin.isEmpty()) {
             qDebug() << "Address of server to join  :" << m_serverToJoin;
+        } else if (!m_worldToJoin.isEmpty()) {
+            qDebug() << "Name of the world to join  :" << m_worldToJoin;
         }
         qDebug() << "<> Paths set.";
     }
@@ -596,6 +604,7 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
         m_settings->registerSetting("DownloadsDir", QStandardPaths::writableLocation(QStandardPaths::DownloadLocation));
         m_settings->registerSetting("DownloadsDirWatchRecursive", false);
         m_settings->registerSetting("SkinsDir", "skins");
+        m_settings->registerSetting("JavaDir", "java");
 
         // Editors
         m_settings->registerSetting("JsonEditor", QString());
@@ -624,7 +633,7 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
 
         // Memory
         m_settings->registerSetting({ "MinMemAlloc", "MinMemoryAlloc" }, 512);
-        m_settings->registerSetting({ "MaxMemAlloc", "MaxMemoryAlloc" }, suitableMaxMem());
+        m_settings->registerSetting({ "MaxMemAlloc", "MaxMemoryAlloc" }, SysInfo::suitableMaxMem());
         m_settings->registerSetting("PermGen", 128);
 
         // Java Settings
@@ -638,6 +647,9 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
         m_settings->registerSetting("JvmArgs", "");
         m_settings->registerSetting("IgnoreJavaCompatibility", false);
         m_settings->registerSetting("IgnoreJavaWizard", false);
+        auto defaultEnableAutoJava = m_settings->get("JavaPath").toString().isEmpty();
+        m_settings->registerSetting("AutomaticJavaSwitch", defaultEnableAutoJava);
+        m_settings->registerSetting("AutomaticJavaDownload", defaultEnableAutoJava);
 
         // Legacy settings
         m_settings->registerSetting("OnlineFixes", false);
@@ -867,6 +879,7 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
         m_metacache->addBase("ModrinthModpacks", QDir("cache/ModrinthModpacks").absolutePath());
         m_metacache->addBase("translations", QDir("translations").absolutePath());
         m_metacache->addBase("meta", QDir("meta").absolutePath());
+        m_metacache->addBase("java", QDir("cache/java").absolutePath());
         m_metacache->Load();
         qDebug() << "<> Cache initialized.";
     }
@@ -1157,14 +1170,17 @@ void Application::performMainStartupAction()
     if (!m_instanceIdToLaunch.isEmpty()) {
         auto inst = instances()->getInstanceById(m_instanceIdToLaunch);
         if (inst) {
-            MinecraftServerTargetPtr serverToJoin = nullptr;
+            MinecraftTarget::Ptr targetToJoin = nullptr;
             MinecraftAccountPtr accountToUse = nullptr;
 
             qDebug() << "<> Instance" << m_instanceIdToLaunch << "launching";
             if (!m_serverToJoin.isEmpty()) {
                 // FIXME: validate the server string
-                serverToJoin.reset(new MinecraftServerTarget(MinecraftServerTarget::parse(m_serverToJoin)));
+                targetToJoin.reset(new MinecraftTarget(MinecraftTarget::parse(m_serverToJoin, false)));
                 qDebug() << "   Launching with server" << m_serverToJoin;
+            } else if (!m_worldToJoin.isEmpty()) {
+                targetToJoin.reset(new MinecraftTarget(MinecraftTarget::parse(m_worldToJoin, true)));
+                qDebug() << "   Launching with world" << m_worldToJoin;
             }
 
             if (!m_profileToUse.isEmpty()) {
@@ -1175,7 +1191,7 @@ void Application::performMainStartupAction()
                 qDebug() << "   Launching with account" << m_profileToUse;
             }
 
-            launch(inst, true, false, serverToJoin, accountToUse);
+            launch(inst, true, false, targetToJoin, accountToUse);
             return;
         }
     }
@@ -1265,6 +1281,7 @@ void Application::messageReceived(const QByteArray& message)
     } else if (command == "launch") {
         QString id = received.args["id"];
         QString server = received.args["server"];
+        QString world = received.args["world"];
         QString profile = received.args["profile"];
 
         InstancePtr instance;
@@ -1279,11 +1296,12 @@ void Application::messageReceived(const QByteArray& message)
             return;
         }
 
-        MinecraftServerTargetPtr serverObject = nullptr;
+        MinecraftTarget::Ptr serverObject = nullptr;
         if (!server.isEmpty()) {
-            serverObject = std::make_shared<MinecraftServerTarget>(MinecraftServerTarget::parse(server));
+            serverObject = std::make_shared<MinecraftTarget>(MinecraftTarget::parse(server, false));
+        } else if (!world.isEmpty()) {
+            serverObject = std::make_shared<MinecraftTarget>(MinecraftTarget::parse(world, true));
         }
-
         MinecraftAccountPtr accountObject;
         if (!profile.isEmpty()) {
             accountObject = accounts()->getAccountByProfileName(profile);
@@ -1332,11 +1350,7 @@ bool Application::openJsonEditor(const QString& filename)
     }
 }
 
-bool Application::launch(InstancePtr instance,
+bool Application::launch(InstancePtr instance, bool online, bool demo, MinecraftTarget::Ptr targetToJoin, MinecraftAccountPtr accountToUse)
-                         bool online,
-                         bool demo,
-                         MinecraftServerTargetPtr serverToJoin,
-                         MinecraftAccountPtr accountToUse)
 {
     if (m_updateRunning) {
         qDebug() << "Cannot launch instances while an update is running. Please try again when updates are completed.";
@@ -1354,7 +1368,7 @@ bool Application::launch(InstancePtr instance,
         controller->setOnline(online);
         controller->setDemo(demo);
         controller->setProfiler(profilers().value(instance->settings()->get("Profiler").toString(), nullptr).get());
-        controller->setServerToJoin(serverToJoin);
+        controller->setTargetToJoin(targetToJoin);
         controller->setAccountToUse(accountToUse);
         if (window) {
             controller->setParentWidget(window);
@@ -1733,20 +1747,6 @@ QString Application::getUserAgentUncached()
     return BuildConfig.USER_AGENT_UNCACHED;
 }
 
-int Application::suitableMaxMem()
-{
-    float totalRAM = (float)Sys::getSystemRam() / (float)Sys::mebibyte;
-    int maxMemoryAlloc;
-
-    // If totalRAM < 6GB, use (totalRAM / 1.5), else 4GB
-    if (totalRAM < (4096 * 1.5))
-        maxMemoryAlloc = (int)(totalRAM / 1.5);
-    else
-        maxMemoryAlloc = 4096;
-
-    return maxMemoryAlloc;
-}
-
 bool Application::handleDataMigration(const QString& currentData,
                                       const QString& oldData,
                                       const QString& name,
@@ -1853,3 +1853,7 @@ QUrl Application::normalizeImportUrl(QString const& url)
         return QUrl::fromUserInput(url);
     }
 }
+const QString Application::javaPath()
+{
+    return m_settings->get("JavaDir").toString();
+}

launcher/Application.h

@@ -47,7 +47,7 @@
 
 #include <BaseInstance.h>
 
-#include "minecraft/launch/MinecraftServerTarget.h"
+#include "minecraft/launch/MinecraftTarget.h"
 
 class LaunchController;
 class LocalPeer;
@@ -161,6 +161,9 @@ class Application : public QApplication {
     /// the data path the application is using
     const QString& dataRoot() { return m_dataPath; }
 
+    /// the java installed path the application is using
+    const QString javaPath();
+
     bool isPortable() { return m_portable; }
 
     const Capabilities capabilities() { return m_capabilities; }
@@ -179,8 +182,6 @@ class Application : public QApplication {
 
     void ShowGlobalSettings(class QWidget* parent, QString open_page = QString());
 
-    int suitableMaxMem();
-
     bool updaterEnabled();
     QString updaterBinaryName();
 
@@ -202,7 +203,7 @@ class Application : public QApplication {
     bool launch(InstancePtr instance,
                 bool online = true,
                 bool demo = false,
-                MinecraftServerTargetPtr serverToJoin = nullptr,
+                MinecraftTarget::Ptr targetToJoin = nullptr,
                 MinecraftAccountPtr accountToUse = nullptr);
     bool kill(InstancePtr instance);
     void closeCurrentWindow();
@@ -290,6 +291,7 @@ class Application : public QApplication {
     QString m_detectedOpenALPath;
     QString m_instanceIdToLaunch;
     QString m_serverToJoin;
+    QString m_worldToJoin;
     QString m_profileToUse;
     bool m_liveCheck = false;
     QList<QUrl> m_urlsToImport;

launcher/BaseInstance.h

@@ -56,7 +56,7 @@
 #include "net/Mode.h"
 
 #include "RuntimeContext.h"
-#include "minecraft/launch/MinecraftServerTarget.h"
+#include "minecraft/launch/MinecraftTarget.h"
 
 class QDir;
 class Task;
@@ -184,7 +184,7 @@ class BaseInstance : public QObject, public std::enable_shared_from_this<BaseIns
     virtual Task::Ptr createUpdateTask(Net::Mode mode) = 0;
 
     /// returns a valid launcher (task container)
-    virtual shared_qobject_ptr<LaunchTask> createLaunchTask(AuthSessionPtr account, MinecraftServerTargetPtr serverToJoin) = 0;
+    virtual shared_qobject_ptr<LaunchTask> createLaunchTask(AuthSessionPtr account, MinecraftTarget::Ptr targetToJoin) = 0;
 
     /// returns the current launch task (if any)
     shared_qobject_ptr<LaunchTask> getLaunchTask();
@@ -256,7 +256,7 @@ class BaseInstance : public QObject, public std::enable_shared_from_this<BaseIns
     /**
      * 'print' a verbose description of the instance into a QStringList
      */
-    virtual QStringList verboseDescription(AuthSessionPtr session, MinecraftServerTargetPtr serverToJoin) = 0;
+    virtual QStringList verboseDescription(AuthSessionPtr session, MinecraftTarget::Ptr targetToJoin) = 0;
 
     Status currentStatus() const;
 

launcher/BaseVersionList.cpp

@@ -78,6 +78,14 @@ QVariant BaseVersionList::data(const QModelIndex& index, int role) const
         case TypeRole:
             return version->typeString();
 
+        case JavaMajorRole: {
+            auto major = version->name();
+            if (major.startsWith("java")) {
+                major = "Java " + major.mid(4);
+            }
+            return major;
+        }
+
         default:
             return QVariant();
     }
@@ -110,6 +118,8 @@ QHash<int, QByteArray> BaseVersionList::roleNames() const
     roles.insert(TypeRole, "type");
     roles.insert(BranchRole, "branch");
     roles.insert(PathRole, "path");
-    roles.insert(ArchitectureRole, "architecture");
+    roles.insert(JavaNameRole, "javaName");
+    roles.insert(CPUArchitectureRole, "architecture");
+    roles.insert(JavaMajorRole, "javaMajor");
     return roles;
 }

launcher/BaseVersionList.h

@@ -48,7 +48,9 @@ class BaseVersionList : public QAbstractListModel {
         TypeRole,
         BranchRole,
         PathRole,
-        ArchitectureRole,
+        JavaNameRole,
+        JavaMajorRole,
+        CPUArchitectureRole,
         SortRole
     };
     using RoleList = QList<int>;

launcher/CMakeLists.txt

@@ -24,6 +24,8 @@ set(CORE_SOURCES
     NullInstance.h
     MMCZip.h
     MMCZip.cpp
+    Untar.h
+    Untar.cpp
     StringUtils.h
     StringUtils.cpp
     QVariantUtils.h
@@ -262,8 +264,8 @@ set(MINECRAFT_SOURCES
     minecraft/launch/ExtractNatives.h
     minecraft/launch/LauncherPartLaunch.cpp
     minecraft/launch/LauncherPartLaunch.h
-    minecraft/launch/MinecraftServerTarget.cpp
+    minecraft/launch/MinecraftTarget.cpp
-    minecraft/launch/MinecraftServerTarget.h
+    minecraft/launch/MinecraftTarget.h
     minecraft/launch/PrintInstanceInfo.cpp
     minecraft/launch/PrintInstanceInfo.h
     minecraft/launch/ReconstructAssets.cpp
@@ -272,6 +274,8 @@ set(MINECRAFT_SOURCES
     minecraft/launch/ScanModFolders.h
     minecraft/launch/VerifyJavaInstall.cpp
     minecraft/launch/VerifyJavaInstall.h
+    minecraft/launch/AutoInstallJava.cpp
+    minecraft/launch/AutoInstallJava.h
 
     minecraft/GradleSpecifier.h
     minecraft/MinecraftInstance.cpp
@@ -417,8 +421,6 @@ set(SETTINGS_SOURCES
 set(JAVA_SOURCES
     java/JavaChecker.h
     java/JavaChecker.cpp
-    java/JavaCheckerJob.h
-    java/JavaCheckerJob.cpp
     java/JavaInstall.h
     java/JavaInstall.cpp
     java/JavaInstallList.h
@@ -427,6 +429,18 @@ set(JAVA_SOURCES
     java/JavaUtils.cpp
     java/JavaVersion.h
     java/JavaVersion.cpp
+
+    java/JavaMetadata.h
+    java/JavaMetadata.cpp
+    java/download/ArchiveDownloadTask.cpp
+    java/download/ArchiveDownloadTask.h
+    java/download/ManifestDownloadTask.cpp
+    java/download/ManifestDownloadTask.h
+
+    ui/java/InstallJavaDialog.h
+    ui/java/InstallJavaDialog.cpp
+    ui/java/VersionList.h
+    ui/java/VersionList.cpp
 )
 
 set(TRANSLATIONS_SOURCES
@@ -746,6 +760,8 @@ SET(LAUNCHER_SOURCES
     DataMigrationTask.cpp
     ApplicationMessage.h
     ApplicationMessage.cpp
+    SysInfo.h
+    SysInfo.cpp
 
     # GUI - general utilities
     DesktopServices.h
@@ -784,8 +800,6 @@ SET(LAUNCHER_SOURCES
     # GUI - windows
     ui/GuiUtil.h
     ui/GuiUtil.cpp
-    ui/ColorCache.h
-    ui/ColorCache.cpp
     ui/MainWindow.h
     ui/MainWindow.cpp
     ui/InstanceWindow.h

launcher/FileSystem.cpp

@@ -276,6 +276,9 @@ bool ensureFolderPathExists(const QFileInfo folderPath)
 {
     QDir dir;
     QString ensuredPath = folderPath.filePath();
+    if (folderPath.exists())
+        return true;
+
     bool success = dir.mkpath(ensuredPath);
     return success;
 }

launcher/Filter.cpp

@@ -1,16 +1,12 @@
 #include "Filter.h"
 
-Filter::~Filter() {}
-
 ContainsFilter::ContainsFilter(const QString& pattern) : pattern(pattern) {}
-ContainsFilter::~ContainsFilter() {}
 bool ContainsFilter::accepts(const QString& value)
 {
     return value.contains(pattern);
 }
 
 ExactFilter::ExactFilter(const QString& pattern) : pattern(pattern) {}
-ExactFilter::~ExactFilter() {}
 bool ExactFilter::accepts(const QString& value)
 {
     return value == pattern;
@@ -27,10 +23,15 @@ RegexpFilter::RegexpFilter(const QString& regexp, bool invert) : invert(invert)
     pattern.setPattern(regexp);
     pattern.optimize();
 }
-RegexpFilter::~RegexpFilter() {}
 bool RegexpFilter::accepts(const QString& value)
 {
     auto match = pattern.match(value);
     bool matched = match.hasMatch();
     return invert ? (!matched) : (matched);
 }
+
+ExactListFilter::ExactListFilter(const QStringList& pattern) : m_pattern(pattern) {}
+bool ExactListFilter::accepts(const QString& value)
+{
+    return m_pattern.isEmpty() || m_pattern.contains(value);
+}

launcher/Filter.h

@@ -5,14 +5,14 @@
 
 class Filter {
    public:
-    virtual ~Filter();
+    virtual ~Filter() = default;
     virtual bool accepts(const QString& value) = 0;
 };
 
 class ContainsFilter : public Filter {
    public:
     ContainsFilter(const QString& pattern);
-    virtual ~ContainsFilter();
+    virtual ~ContainsFilter() = default;
     bool accepts(const QString& value) override;
 
    private:
@@ -22,7 +22,7 @@ class ContainsFilter : public Filter {
 class ExactFilter : public Filter {
    public:
     ExactFilter(const QString& pattern);
-    virtual ~ExactFilter();
+    virtual ~ExactFilter() = default;
     bool accepts(const QString& value) override;
 
    private:
@@ -32,7 +32,7 @@ class ExactFilter : public Filter {
 class ExactIfPresentFilter : public Filter {
    public:
     ExactIfPresentFilter(const QString& pattern);
-    ~ExactIfPresentFilter() override = default;
+    virtual ~ExactIfPresentFilter() override = default;
     bool accepts(const QString& value) override;
 
    private:
@@ -42,10 +42,20 @@ class ExactIfPresentFilter : public Filter {
 class RegexpFilter : public Filter {
    public:
     RegexpFilter(const QString& regexp, bool invert);
-    virtual ~RegexpFilter();
+    virtual ~RegexpFilter() = default;
     bool accepts(const QString& value) override;
 
    private:
     QRegularExpression pattern;
     bool invert = false;
 };
+
+class ExactListFilter : public Filter {
+   public:
+    ExactListFilter(const QStringList& pattern = {});
+    virtual ~ExactListFilter() = default;
+    bool accepts(const QString& value) override;
+
+   private:
+    const QStringList& m_pattern;
+};

launcher/InstancePageProvider.h

@@ -22,7 +22,7 @@ class InstancePageProvider : protected QObject, public BasePageProvider {
    public:
     explicit InstancePageProvider(InstancePtr parent) { inst = parent; }
 
-    virtual ~InstancePageProvider() {};
+    virtual ~InstancePageProvider() = default;
     virtual QList<BasePage*> getPages() override
     {
         QList<BasePage*> values;
@@ -39,7 +39,7 @@ class InstancePageProvider : protected QObject, public BasePageProvider {
         values.append(new TexturePackPage(onesix.get(), onesix->texturePackList()));
         values.append(new ShaderPackPage(onesix.get(), onesix->shaderPackList()));
         values.append(new NotesPage(onesix.get()));
-        values.append(new WorldListPage(onesix.get(), onesix->worldList()));
+        values.append(new WorldListPage(onesix, onesix->worldList()));
         values.append(new ServersPage(onesix));
         // values.append(new GameOptionsPage(onesix.get()));
         values.append(new ScreenshotsPage(FS::PathCombine(onesix->gameRoot(), "screenshots")));

launcher/JavaCommon.cpp

@@ -63,7 +63,7 @@ bool JavaCommon::checkJVMArgs(QString jvmargs, QWidget* parent)
     return true;
 }
 
-void JavaCommon::javaWasOk(QWidget* parent, const JavaCheckResult& result)
+void JavaCommon::javaWasOk(QWidget* parent, const JavaChecker::Result& result)
 {
     QString text;
     text += QObject::tr(
@@ -79,7 +79,7 @@ void JavaCommon::javaWasOk(QWidget* parent, const JavaCheckResult& result)
     CustomMessageBox::selectable(parent, QObject::tr("Java test success"), text, QMessageBox::Information)->show();
 }
 
-void JavaCommon::javaArgsWereBad(QWidget* parent, const JavaCheckResult& result)
+void JavaCommon::javaArgsWereBad(QWidget* parent, const JavaChecker::Result& result)
 {
     auto htmlError = result.errorLog;
     QString text;
@@ -89,7 +89,7 @@ void JavaCommon::javaArgsWereBad(QWidget* parent, const JavaCheckResult& result)
     CustomMessageBox::selectable(parent, QObject::tr("Java test failure"), text, QMessageBox::Warning)->show();
 }
 
-void JavaCommon::javaBinaryWasBad(QWidget* parent, const JavaCheckResult& result)
+void JavaCommon::javaBinaryWasBad(QWidget* parent, const JavaChecker::Result& result)
 {
     QString text;
     text += QObject::tr(
@@ -116,34 +116,26 @@ void JavaCommon::TestCheck::run()
         emit finished();
         return;
     }
-    checker.reset(new JavaChecker());
+    checker.reset(new JavaChecker(m_path, "", 0, 0, 0, 0, this));
     connect(checker.get(), &JavaChecker::checkFinished, this, &JavaCommon::TestCheck::checkFinished);
-    checker->m_path = m_path;
+    checker->start();
-    checker->performCheck();
 }
 
-void JavaCommon::TestCheck::checkFinished(JavaCheckResult result)
+void JavaCommon::TestCheck::checkFinished(const JavaChecker::Result& result)
 {
-    if (result.validity != JavaCheckResult::Validity::Valid) {
+    if (result.validity != JavaChecker::Result::Validity::Valid) {
         javaBinaryWasBad(m_parent, result);
         emit finished();
         return;
     }
-    checker.reset(new JavaChecker());
+    checker.reset(new JavaChecker(m_path, m_args, m_maxMem, m_maxMem, result.javaVersion.requiresPermGen() ? m_permGen : 0, 0, this));
     connect(checker.get(), &JavaChecker::checkFinished, this, &JavaCommon::TestCheck::checkFinishedWithArgs);
-    checker->m_path = m_path;
+    checker->start();
-    checker->m_args = m_args;
-    checker->m_minMem = m_minMem;
-    checker->m_maxMem = m_maxMem;
-    if (result.javaVersion.requiresPermGen()) {
-        checker->m_permGen = m_permGen;
-    }
-    checker->performCheck();
 }
 
-void JavaCommon::TestCheck::checkFinishedWithArgs(JavaCheckResult result)
+void JavaCommon::TestCheck::checkFinishedWithArgs(const JavaChecker::Result& result)
 {
-    if (result.validity == JavaCheckResult::Validity::Valid) {
+    if (result.validity == JavaChecker::Result::Validity::Valid) {
         javaWasOk(m_parent, result);
         emit finished();
         return;

launcher/JavaCommon.h

@@ -10,11 +10,11 @@ namespace JavaCommon {
 bool checkJVMArgs(QString args, QWidget* parent);
 
 // Show a dialog saying that the Java binary was usable
-void javaWasOk(QWidget* parent, const JavaCheckResult& result);
+void javaWasOk(QWidget* parent, const JavaChecker::Result& result);
 // Show a dialog saying that the Java binary was not usable because of bad options
-void javaArgsWereBad(QWidget* parent, const JavaCheckResult& result);
+void javaArgsWereBad(QWidget* parent, const JavaChecker::Result& result);
 // Show a dialog saying that the Java binary was not usable
-void javaBinaryWasBad(QWidget* parent, const JavaCheckResult& result);
+void javaBinaryWasBad(QWidget* parent, const JavaChecker::Result& result);
 // Show a dialog if we couldn't find Java Checker
 void javaCheckNotFound(QWidget* parent);
 
@@ -32,11 +32,11 @@ class TestCheck : public QObject {
     void finished();
 
    private slots:
-    void checkFinished(JavaCheckResult result);
+    void checkFinished(const JavaChecker::Result& result);
-    void checkFinishedWithArgs(JavaCheckResult result);
+    void checkFinishedWithArgs(const JavaChecker::Result& result);
 
    private:
-    std::shared_ptr<JavaChecker> checker;
+    JavaChecker::Ptr checker;
     QWidget* m_parent = nullptr;
     QString m_path;
     QString m_args;

launcher/LaunchController.cpp

@@ -324,7 +324,7 @@ void LaunchController::launchInstance()
         return;
     }
 
-    m_launcher = m_instance->createLaunchTask(m_session, m_serverToJoin);
+    m_launcher = m_instance->createLaunchTask(m_session, m_targetToJoin);
     if (!m_launcher) {
         emitFailed(tr("Couldn't instantiate a launcher."));
         return;

launcher/LaunchController.h

@@ -39,7 +39,7 @@
 #include <QObject>
 
 #include "minecraft/auth/MinecraftAccount.h"
-#include "minecraft/launch/MinecraftServerTarget.h"
+#include "minecraft/launch/MinecraftTarget.h"
 
 class InstanceWindow;
 class LaunchController : public Task {
@@ -48,7 +48,7 @@ class LaunchController : public Task {
     void executeTask() override;
 
     LaunchController(QObject* parent = nullptr);
-    virtual ~LaunchController() {};
+    virtual ~LaunchController() = default;
 
     void setInstance(InstancePtr instance) { m_instance = instance; }
 
@@ -62,7 +62,7 @@ class LaunchController : public Task {
 
     void setParentWidget(QWidget* widget) { m_parentWidget = widget; }
 
-    void setServerToJoin(MinecraftServerTargetPtr serverToJoin) { m_serverToJoin = std::move(serverToJoin); }
+    void setTargetToJoin(MinecraftTarget::Ptr targetToJoin) { m_targetToJoin = std::move(targetToJoin); }
 
     void setAccountToUse(MinecraftAccountPtr accountToUse) { m_accountToUse = std::move(accountToUse); }
 
@@ -94,5 +94,5 @@ class LaunchController : public Task {
     MinecraftAccountPtr m_accountToUse = nullptr;
     AuthSessionPtr m_session;
     shared_qobject_ptr<LaunchTask> m_launcher;
-    MinecraftServerTargetPtr m_serverToJoin;
+    MinecraftTarget::Ptr m_targetToJoin;
 };

launcher/MMCZip.cpp

@@ -2,7 +2,7 @@
 /*
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
- *  Copyright (c) 2023 Trial97 <alexandru.tripon97@gmail.com>
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -536,6 +536,10 @@ bool ExportToZipTask::abort()
 
 void ExtractZipTask::executeTask()
 {
+    if (!m_input->isOpen() && !m_input->open(QuaZip::mdUnzip)) {
+        emitFailed(tr("Unable to open supplied zip file."));
+        return;
+    }
     m_zip_future = QtConcurrent::run(QThreadPool::globalInstance(), [this]() { return extractZip(); });
     connect(&m_zip_watcher, &QFutureWatcher<ZipResult>::finished, this, &ExtractZipTask::finish);
     m_zip_watcher.setFuture(m_zip_future);

launcher/MMCZip.h

@@ -2,7 +2,7 @@
 /*
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
- *  Copyright (c) 2023 Trial97 <alexandru.tripon97@gmail.com>
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -208,6 +208,9 @@ class ExportToZipTask : public Task {
 
 class ExtractZipTask : public Task {
    public:
+    ExtractZipTask(QString input, QDir outputDir, QString subdirectory = "")
+        : ExtractZipTask(std::make_shared<QuaZip>(input), outputDir, subdirectory)
+    {}
     ExtractZipTask(std::shared_ptr<QuaZip> input, QDir outputDir, QString subdirectory = "")
         : m_input(input), m_output_dir(outputDir), m_subdirectory(subdirectory)
     {}

launcher/MangoHud.cpp

@@ -40,8 +40,8 @@ namespace MangoHud {
 
 QString getLibraryString()
 {
-    /*
+    /**
-     * Check for vulkan layers in this order:
+     * Guess MangoHud install location by searching for vulkan layers in this order:
      *
      * $VK_LAYER_PATH
      * $XDG_DATA_DIRS (/usr/local/share/:/usr/share/)
@@ -49,8 +49,9 @@ QString getLibraryString()
      * /etc
      * $XDG_CONFIG_DIRS (/etc/xdg)
      * $XDG_CONFIG_HOME (~/.config)
+     *
+     * @returns Absolute path of libMangoHud.so if found and empty QString otherwise.
      */
-
     QStringList vkLayerList;
     {
         QString home = QDir::homePath();
@@ -85,7 +86,7 @@ QString getLibraryString()
         vkLayerList << FS::PathCombine(xdgConfigHome, "vulkan", "implicit_layer.d");
     }
 
-    for (QString vkLayer : vkLayerList) {
+    for (const QString& vkLayer : vkLayerList) {
         // prefer to use architecture specific vulkan layers
         QString currentArch = QSysInfo::currentCpuArchitecture();
 
@@ -95,8 +96,8 @@ QString getLibraryString()
 
         QStringList manifestNames = { QString("MangoHud.%1.json").arg(currentArch), "MangoHud.json" };
 
-        QString filePath = "";
+        QString filePath{};
-        for (QString manifestName : manifestNames) {
+        for (const QString& manifestName : manifestNames) {
             QString tryPath = FS::PathCombine(vkLayer, manifestName);
             if (QFile::exists(tryPath)) {
                 filePath = tryPath;
@@ -111,10 +112,23 @@ QString getLibraryString()
         auto conf = Json::requireDocument(filePath, vkLayer);
         auto confObject = Json::requireObject(conf, vkLayer);
         auto layer = Json::ensureObject(confObject, "layer");
-        return Json::ensureString(layer, "library_path");
+        QString libraryName = Json::ensureString(layer, "library_path");
+
+#ifdef __GLIBC__
+        // Check whether mangohud is usable on a glibc based system
+        if (!libraryName.isEmpty()) {
+            QString libraryPath = findLibrary(libraryName);
+            if (!libraryPath.isEmpty()) {
+                return libraryPath;
+            }
+        }
+#else
+        // Without glibc return recorded shared library as-is.
+        return libraryName;
+#endif
     }
 
-    return QString();
+    return {};
 }
 
 QString findLibrary(QString libName)

launcher/NullInstance.h

@@ -46,13 +46,13 @@ class NullInstance : public BaseInstance {
     {
         setVersionBroken(true);
     }
-    virtual ~NullInstance() {};
+    virtual ~NullInstance() = default;
     void saveNow() override {}
     void loadSpecificSettings() override { setSpecificSettingsLoaded(true); }
     QString getStatusbarDescription() override { return tr("Unknown instance type"); };
     QSet<QString> traits() const override { return {}; };
     QString instanceConfigFolder() const override { return instanceRoot(); };
-    shared_qobject_ptr<LaunchTask> createLaunchTask(AuthSessionPtr, MinecraftServerTargetPtr) override { return nullptr; }
+    shared_qobject_ptr<LaunchTask> createLaunchTask(AuthSessionPtr, MinecraftTarget::Ptr) override { return nullptr; }
     shared_qobject_ptr<Task> createUpdateTask([[maybe_unused]] Net::Mode mode) override { return nullptr; }
     QProcessEnvironment createEnvironment() override { return QProcessEnvironment(); }
     QProcessEnvironment createLaunchEnvironment() override { return QProcessEnvironment(); }
@@ -64,7 +64,7 @@ class NullInstance : public BaseInstance {
     bool canEdit() const override { return false; }
     bool canLaunch() const override { return false; }
     void populateLaunchMenu(QMenu* menu) override {}
-    QStringList verboseDescription(AuthSessionPtr session, MinecraftServerTargetPtr serverToJoin) override
+    QStringList verboseDescription(AuthSessionPtr session, MinecraftTarget::Ptr targetToJoin) override
     {
         QStringList out;
         out << "Null instance - placeholder.";

launcher/SysInfo.cpp

@@ -0,0 +1,99 @@
+#include <QDebug>
+#include <QString>
+#include "sys.h"
+#ifdef Q_OS_MACOS
+#include <sys/sysctl.h>
+#endif
+#include <QFile>
+#include <QMap>
+#include <QProcess>
+#include <QStandardPaths>
+
+#ifdef Q_OS_MACOS
+bool rosettaDetect()
+{
+    int ret = 0;
+    size_t size = sizeof(ret);
+    if (sysctlbyname("sysctl.proc_translated", &ret, &size, NULL, 0) == -1) {
+        return false;
+    }
+    return ret == 1;
+}
+#endif
+
+namespace SysInfo {
+QString currentSystem()
+{
+#if defined(Q_OS_LINUX)
+    return "linux";
+#elif defined(Q_OS_MACOS)
+    return "osx";
+#elif defined(Q_OS_WINDOWS)
+    return "windows";
+#elif defined(Q_OS_FREEBSD)
+    return "freebsd";
+#elif defined(Q_OS_OPENBSD)
+    return "openbsd";
+#else
+    return "unknown";
+#endif
+}
+
+QString useQTForArch()
+{
+#if defined(Q_OS_MACOS) && !defined(Q_PROCESSOR_ARM)
+    if (rosettaDetect()) {
+        return "arm64";
+    } else {
+        return "x86_64";
+    }
+#endif
+    return QSysInfo::currentCpuArchitecture();
+}
+
+int suitableMaxMem()
+{
+    float totalRAM = (float)Sys::getSystemRam() / (float)Sys::mebibyte;
+    int maxMemoryAlloc;
+
+    // If totalRAM < 6GB, use (totalRAM / 1.5), else 4GB
+    if (totalRAM < (4096 * 1.5))
+        maxMemoryAlloc = (int)(totalRAM / 1.5);
+    else
+        maxMemoryAlloc = 4096;
+
+    return maxMemoryAlloc;
+}
+
+QString getSupportedJavaArchitecture()
+{
+    auto sys = currentSystem();
+    auto arch = useQTForArch();
+    if (sys == "windows") {
+        if (arch == "x86_64")
+            return "windows-x64";
+        if (arch == "i386")
+            return "windows-x86";
+        // Unknown, maybe arm, appending arch
+        return "windows-" + arch;
+    }
+    if (sys == "osx") {
+        if (arch == "arm64")
+            return "mac-os-arm64";
+        if (arch.contains("64"))
+            return "mac-os-64";
+        if (arch.contains("86"))
+            return "mac-os-86";
+        // Unknown, maybe something new, appending arch
+        return "mac-os-" + arch;
+    } else if (sys == "linux") {
+        if (arch == "x86_64")
+            return "linux-x64";
+        if (arch == "i386")
+            return "linux-x86";
+        // will work for arm32 arm(64)
+        return "linux-" + arch;
+    }
+    return {};
+}
+}  // namespace SysInfo

launcher/SysInfo.h

@@ -0,0 +1,8 @@
+#include <QString>
+
+namespace SysInfo {
+QString currentSystem();
+QString useQTForArch();
+QString getSupportedJavaArchitecture();
+int suitableMaxMem();
+}  // namespace SysInfo

launcher/Untar.cpp

@@ -0,0 +1,260 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2021 MultiMC Contributors
+ *
+ *      Licensed under the Apache License, Version 2.0 (the "License");
+ *      you may not use this file except in compliance with the License.
+ *      You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *      Unless required by applicable law or agreed to in writing, software
+ *      distributed under the License is distributed on an "AS IS" BASIS,
+ *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *      See the License for the specific language governing permissions and
+ *      limitations under the License.
+ */
+#include "Untar.h"
+#include <quagzipfile.h>
+#include <QByteArray>
+#include <QFileInfo>
+#include <QIODevice>
+#include <QString>
+#include "FileSystem.h"
+
+// adaptation of the:
+// - https://github.com/madler/zlib/blob/develop/contrib/untgz/untgz.c
+// - https://en.wikipedia.org/wiki/Tar_(computing)
+// - https://github.com/euroelessar/cutereader/blob/master/karchive/src/ktar.cpp
+
+#define BLOCKSIZE 512
+#define SHORTNAMESIZE 100
+
+enum class TypeFlag : char {
+    Regular = '0',     // regular file
+    ARegular = 0,      // regular file
+    Link = '1',        // link
+    Symlink = '2',     // reserved
+    Character = '3',   // character special
+    Block = '4',       // block special
+    Directory = '5',   // directory
+    FIFO = '6',        // FIFO special
+    Contiguous = '7',  // reserved
+    // Posix stuff
+    GlobalPosixHeader = 'g',
+    ExtendedPosixHeader = 'x',
+    // 'A'– 'Z' Vendor specific extensions(POSIX .1 - 1988)
+    // GNU
+    GNULongLink = 'K', /* long link name */
+    GNULongName = 'L', /* long file name */
+};
+
+// struct Header {         /* byte offset */
+//     char name[100];     /*   0 */
+//     char mode[8];       /* 100 */
+//     char uid[8];        /* 108 */
+//     char gid[8];        /* 116 */
+//     char size[12];      /* 124 */
+//     char mtime[12];     /* 136 */
+//     char chksum[8];     /* 148 */
+//     TypeFlag typeflag;  /* 156 */
+//     char linkname[100]; /* 157 */
+//     char magic[6];      /* 257 */
+//     char version[2];    /* 263 */
+//     char uname[32];     /* 265 */
+//     char gname[32];     /* 297 */
+//     char devmajor[8];   /* 329 */
+//     char devminor[8];   /* 337 */
+//     char prefix[155];   /* 345 */
+//                         /* 500 */
+// };
+
+bool readLonglink(QIODevice* in, qint64 size, QByteArray& longlink)
+{
+    qint64 n = 0;
+    size--;  // ignore trailing null
+    if (size < 0) {
+        qCritical() << "The filename size is negative";
+        return false;
+    }
+    longlink.resize(size + (BLOCKSIZE - size % BLOCKSIZE));  // make the size divisible by BLOCKSIZE
+    for (qint64 offset = 0; offset < longlink.size(); offset += BLOCKSIZE) {
+        n = in->read(longlink.data() + offset, BLOCKSIZE);
+        if (n != BLOCKSIZE) {
+            qCritical() << "The expected blocksize was not respected for the name";
+            return false;
+        }
+    }
+    longlink.truncate(qstrlen(longlink.constData()));
+    return true;
+}
+
+int getOctal(char* buffer, int maxlenght, bool* ok)
+{
+    return QByteArray(buffer, qstrnlen(buffer, maxlenght)).toInt(ok, 8);
+}
+
+QString decodeName(char* name)
+{
+    return QFile::decodeName(QByteArray(name, qstrnlen(name, 100)));
+}
+bool Tar::extract(QIODevice* in, QString dst)
+{
+    char buffer[BLOCKSIZE];
+    QString name, symlink, firstFolderName;
+    bool doNotReset = false, ok;
+    while (true) {
+        auto n = in->read(buffer, BLOCKSIZE);
+        if (n != BLOCKSIZE) {  // allways expect complete blocks
+            qCritical() << "The expected blocksize was not respected";
+            return false;
+        }
+        if (buffer[0] == 0) {  // end of archive
+            return true;
+        }
+        int mode = getOctal(buffer + 100, 8, &ok) | QFile::ReadUser | QFile::WriteUser;  // hack to ensure write and read permisions
+        if (!ok) {
+            qCritical() << "The file mode can't be read";
+            return false;
+        }
+        // there are names that are exactly 100 bytes long
+        // and neither longlink nor \0 terminated (bug:101472)
+
+        if (name.isEmpty()) {
+            name = decodeName(buffer);
+            if (!firstFolderName.isEmpty() && name.startsWith(firstFolderName)) {
+                name = name.mid(firstFolderName.size());
+            }
+        }
+        if (symlink.isEmpty())
+            symlink = decodeName(buffer);
+        qint64 size = getOctal(buffer + 124, 12, &ok);
+        if (!ok) {
+            qCritical() << "The file size can't be read";
+            return false;
+        }
+        switch (TypeFlag(buffer[156])) {
+            case TypeFlag::Regular:
+                /* fallthrough */
+            case TypeFlag::ARegular: {
+                auto fileName = FS::PathCombine(dst, name);
+                if (!FS::ensureFilePathExists(fileName)) {
+                    qCritical() << "Can't ensure the file path to exist: " << fileName;
+                    return false;
+                }
+                QFile out(fileName);
+                if (!out.open(QFile::WriteOnly)) {
+                    qCritical() << "Can't open file:" << fileName;
+                    return false;
+                }
+                out.setPermissions(QFile::Permissions(mode));
+                while (size > 0) {
+                    QByteArray tmp(BLOCKSIZE, 0);
+                    n = in->read(tmp.data(), BLOCKSIZE);
+                    if (n != BLOCKSIZE) {
+                        qCritical() << "The expected blocksize was not respected when reading file";
+                        return false;
+                    }
+                    tmp.truncate(qMin(qint64(BLOCKSIZE), size));
+                    out.write(tmp);
+                    size -= BLOCKSIZE;
+                }
+                break;
+            }
+            case TypeFlag::Directory: {
+                if (firstFolderName.isEmpty()) {
+                    firstFolderName = name;
+                    break;
+                }
+                auto folderPath = FS::PathCombine(dst, name);
+                if (!FS::ensureFolderPathExists(folderPath)) {
+                    qCritical() << "Can't ensure that folder exists: " << folderPath;
+                    return false;
+                }
+                break;
+            }
+            case TypeFlag::GNULongLink: {
+                doNotReset = true;
+                QByteArray longlink;
+                if (readLonglink(in, size, longlink)) {
+                    symlink = QFile::decodeName(longlink.constData());
+                } else {
+                    qCritical() << "Failed to read long link";
+                    return false;
+                }
+                break;
+            }
+            case TypeFlag::GNULongName: {
+                doNotReset = true;
+                QByteArray longlink;
+                if (readLonglink(in, size, longlink)) {
+                    name = QFile::decodeName(longlink.constData());
+                } else {
+                    qCritical() << "Failed to read long name";
+                    return false;
+                }
+                break;
+            }
+            case TypeFlag::Link:
+                /* fallthrough */
+            case TypeFlag::Symlink: {
+                auto fileName = FS::PathCombine(dst, name);
+                if (!FS::create_link(FS::PathCombine(QFileInfo(fileName).path(), symlink), fileName)()) {  // do not use symlinks
+                    qCritical() << "Can't create link for:" << fileName << " to:" << FS::PathCombine(QFileInfo(fileName).path(), symlink);
+                    return false;
+                }
+                FS::ensureFilePathExists(fileName);
+                QFile::setPermissions(fileName, QFile::Permissions(mode));
+                break;
+            }
+            case TypeFlag::Character:
+                /* fallthrough */
+            case TypeFlag::Block:
+                /* fallthrough */
+            case TypeFlag::FIFO:
+                /* fallthrough */
+            case TypeFlag::Contiguous:
+                /* fallthrough */
+            case TypeFlag::GlobalPosixHeader:
+                /* fallthrough */
+            case TypeFlag::ExtendedPosixHeader:
+                /* fallthrough */
+            default:
+                break;
+        }
+        if (!doNotReset) {
+            name.truncate(0);
+            symlink.truncate(0);
+        }
+        doNotReset = false;
+    }
+    return true;
+}
+
+bool GZTar::extract(QString src, QString dst)
+{
+    QuaGzipFile a(src);
+    if (!a.open(QIODevice::ReadOnly)) {
+        qCritical() << "Can't open tar file:" << src;
+        return false;
+    }
+    return Tar::extract(&a, dst);
+}

launcher/Untar.h

@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2021 MultiMC Contributors
+ *
+ *      Licensed under the Apache License, Version 2.0 (the "License");
+ *      you may not use this file except in compliance with the License.
+ *      You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *      Unless required by applicable law or agreed to in writing, software
+ *      distributed under the License is distributed on an "AS IS" BASIS,
+ *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *      See the License for the specific language governing permissions and
+ *      limitations under the License.
+ */
+#pragma once
+#include <QIODevice>
+
+// this is a hack used for the java downloader (feel free to remove it in favor of a library)
+// both extract functions will extract the first folder inside dest(disregarding the prefix)
+namespace Tar {
+bool extract(QIODevice* in, QString dst);
+}
+
+namespace GZTar {
+bool extract(QString src, QString dst);
+}

launcher/VersionProxyModel.cpp

@@ -114,10 +114,14 @@ QVariant VersionProxyModel::headerData(int section, Qt::Orientation orientation,
                 return tr("Branch");
             case Type:
                 return tr("Type");
-            case Architecture:
+            case CPUArchitecture:
                 return tr("Architecture");
             case Path:
                 return tr("Path");
+            case JavaName:
+                return tr("Java Name");
+            case JavaMajor:
+                return tr("Major Version");
             case Time:
                 return tr("Released");
         }
@@ -131,10 +135,14 @@ QVariant VersionProxyModel::headerData(int section, Qt::Orientation orientation,
                 return tr("The version's branch");
             case Type:
                 return tr("The version's type");
-            case Architecture:
+            case CPUArchitecture:
                 return tr("CPU Architecture");
             case Path:
                 return tr("Filesystem path to this version");
+            case JavaName:
+                return tr("The alternative name of the java version");
+            case JavaMajor:
+                return tr("The java major version");
             case Time:
                 return tr("Release date of this version");
         }
@@ -165,10 +173,14 @@ QVariant VersionProxyModel::data(const QModelIndex& index, int role) const
                     return sourceModel()->data(parentIndex, BaseVersionList::BranchRole);
                 case Type:
                     return sourceModel()->data(parentIndex, BaseVersionList::TypeRole);
-                case Architecture:
+                case CPUArchitecture:
-                    return sourceModel()->data(parentIndex, BaseVersionList::ArchitectureRole);
+                    return sourceModel()->data(parentIndex, BaseVersionList::CPUArchitectureRole);
                 case Path:
                     return sourceModel()->data(parentIndex, BaseVersionList::PathRole);
+                case JavaName:
+                    return sourceModel()->data(parentIndex, BaseVersionList::JavaNameRole);
+                case JavaMajor:
+                    return sourceModel()->data(parentIndex, BaseVersionList::JavaMajorRole);
                 case Time:
                     return sourceModel()->data(parentIndex, Meta::VersionList::TimeRole).toDate();
                 default:
@@ -308,12 +320,18 @@ void VersionProxyModel::setSourceModel(QAbstractItemModel* replacingRaw)
         m_columns.push_back(ParentVersion);
     }
     */
-    if (roles.contains(BaseVersionList::ArchitectureRole)) {
+    if (roles.contains(BaseVersionList::CPUArchitectureRole)) {
-        m_columns.push_back(Architecture);
+        m_columns.push_back(CPUArchitecture);
     }
     if (roles.contains(BaseVersionList::PathRole)) {
         m_columns.push_back(Path);
     }
+    if (roles.contains(BaseVersionList::JavaNameRole)) {
+        m_columns.push_back(JavaName);
+    }
+    if (roles.contains(BaseVersionList::JavaMajorRole)) {
+        m_columns.push_back(JavaMajor);
+    }
     if (roles.contains(Meta::VersionList::TimeRole)) {
         m_columns.push_back(Time);
     }

launcher/VersionProxyModel.h

@@ -9,7 +9,7 @@ class VersionFilterModel;
 class VersionProxyModel : public QAbstractProxyModel {
     Q_OBJECT
    public:
-    enum Column { Name, ParentVersion, Branch, Type, Architecture, Path, Time };
+    enum Column { Name, ParentVersion, Branch, Type, CPUArchitecture, Path, Time, JavaName, JavaMajor };
     using FilterMap = QHash<BaseVersionList::ModelRoles, std::shared_ptr<Filter>>;
 
    public:

launcher/java/JavaChecker.cpp

@@ -40,14 +40,15 @@
 #include <QMap>
 #include <QProcess>
 
-#include "Application.h"
 #include "Commandline.h"
 #include "FileSystem.h"
-#include "JavaUtils.h"
+#include "java/JavaUtils.h"
 
-JavaChecker::JavaChecker(QObject* parent) : QObject(parent) {}
+JavaChecker::JavaChecker(QString path, QString args, int minMem, int maxMem, int permGen, int id, QObject* parent)
+    : Task(parent), m_path(path), m_args(args), m_minMem(minMem), m_maxMem(maxMem), m_permGen(permGen), m_id(id)
+{}
 
-void JavaChecker::performCheck()
+void JavaChecker::executeTask()
 {
     QString checkerJar = JavaUtils::getJavaCheckPath();
 
@@ -72,7 +73,7 @@ void JavaChecker::performCheck()
     if (m_maxMem != 0) {
         args << QString("-Xmx%1m").arg(m_maxMem);
     }
-    if (m_permGen != 64) {
+    if (m_permGen != 64 && m_permGen != 0) {
         args << QString("-XX:PermSize=%1m").arg(m_permGen);
     }
 
@@ -115,11 +116,10 @@ void JavaChecker::finished(int exitcode, QProcess::ExitStatus status)
     QProcessPtr _process = process;
     process.reset();
 
-    JavaCheckResult result;
+    Result result = {
-    {
+        m_path,
-        result.path = m_path;
+        m_id,
-        result.id = m_id;
+    };
-    }
     result.errorLog = m_stderr;
     result.outLog = m_stdout;
     qDebug() << "STDOUT" << m_stdout;
@@ -127,8 +127,9 @@ void JavaChecker::finished(int exitcode, QProcess::ExitStatus status)
     qDebug() << "Java checker finished with status" << status << "exit code" << exitcode;
 
     if (status == QProcess::CrashExit || exitcode == 1) {
-        result.validity = JavaCheckResult::Validity::Errored;
+        result.validity = Result::Validity::Errored;
         emit checkFinished(result);
+        emitSucceeded();
         return;
     }
 
@@ -161,8 +162,9 @@ void JavaChecker::finished(int exitcode, QProcess::ExitStatus status)
     }
 
     if (!results.contains("os.arch") || !results.contains("java.version") || !results.contains("java.vendor") || !success) {
-        result.validity = JavaCheckResult::Validity::ReturnedInvalidData;
+        result.validity = Result::Validity::ReturnedInvalidData;
         emit checkFinished(result);
+        emitSucceeded();
         return;
     }
 
@@ -171,7 +173,7 @@ void JavaChecker::finished(int exitcode, QProcess::ExitStatus status)
     auto java_vendor = results["java.vendor"];
     bool is_64 = os_arch == "x86_64" || os_arch == "amd64" || os_arch == "aarch64" || os_arch == "arm64";
 
-    result.validity = JavaCheckResult::Validity::Valid;
+    result.validity = Result::Validity::Valid;
     result.is_64bit = is_64;
     result.mojangPlatform = is_64 ? "64" : "32";
     result.realPlatform = os_arch;
@@ -179,6 +181,7 @@ void JavaChecker::finished(int exitcode, QProcess::ExitStatus status)
     result.javaVendor = java_vendor;
     qDebug() << "Java checker succeeded.";
     emit checkFinished(result);
+    emitSucceeded();
 }
 
 void JavaChecker::error(QProcess::ProcessError err)
@@ -190,15 +193,9 @@ void JavaChecker::error(QProcess::ProcessError err)
         qDebug() << "Native environment:";
         qDebug() << QProcessEnvironment::systemEnvironment().toStringList();
         killTimer.stop();
-        JavaCheckResult result;
+        emit checkFinished({ m_path, m_id });
-        {
-            result.path = m_path;
-            result.id = m_id;
-        }
-
-        emit checkFinished(result);
-        return;
     }
+    emitSucceeded();
 }
 
 void JavaChecker::timeout()

launcher/java/JavaChecker.h

@@ -3,14 +3,19 @@
 #include <QTimer>
 #include <memory>
 
-#include "QObjectPtr.h"
-
 #include "JavaVersion.h"
+#include "QObjectPtr.h"
+#include "tasks/Task.h"
 
-class JavaChecker;
+class JavaChecker : public Task {
+    Q_OBJECT
+   public:
+    using QProcessPtr = shared_qobject_ptr<QProcess>;
+    using Ptr = shared_qobject_ptr<JavaChecker>;
 
-struct JavaCheckResult {
+    struct Result {
         QString path;
+        int id;
         QString mojangPlatform;
         QString realPlatform;
         JavaVersion javaVersion;
@@ -18,34 +23,31 @@ struct JavaCheckResult {
         QString outLog;
         QString errorLog;
         bool is_64bit = false;
-    int id;
         enum class Validity { Errored, ReturnedInvalidData, Valid } validity = Validity::Errored;
     };
 
-using QProcessPtr = shared_qobject_ptr<QProcess>;
+    explicit JavaChecker(QString path, QString args, int minMem = 0, int maxMem = 0, int permGen = 0, int id = 0, QObject* parent = 0);
-using JavaCheckerPtr = shared_qobject_ptr<JavaChecker>;
-class JavaChecker : public QObject {
-    Q_OBJECT
-   public:
-    explicit JavaChecker(QObject* parent = 0);
-    void performCheck();
-
-    QString m_path;
-    QString m_args;
-    int m_id = 0;
-    int m_minMem = 0;
-    int m_maxMem = 0;
-    int m_permGen = 64;
 
    signals:
-    void checkFinished(JavaCheckResult result);
+    void checkFinished(const Result& result);
+
+   protected:
+    virtual void executeTask() override;
 
    private:
     QProcessPtr process;
     QTimer killTimer;
     QString m_stdout;
     QString m_stderr;
-   public slots:
+
+    QString m_path;
+    QString m_args;
+    int m_minMem = 0;
+    int m_maxMem = 0;
+    int m_permGen = 64;
+    int m_id = 0;
+
+   private slots:
     void timeout();
     void finished(int exitcode, QProcess::ExitStatus);
     void error(QProcess::ProcessError);

launcher/java/JavaCheckerJob.cpp

@@ -1,41 +0,0 @@
-/* Copyright 2013-2021 MultiMC Contributors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "JavaCheckerJob.h"
-
-#include <QDebug>
-
-void JavaCheckerJob::partFinished(JavaCheckResult result)
-{
-    num_finished++;
-    qDebug() << m_job_name.toLocal8Bit() << "progress:" << num_finished << "/" << javacheckers.size();
-    setProgress(num_finished, javacheckers.size());
-
-    javaresults.replace(result.id, result);
-
-    if (num_finished == javacheckers.size()) {
-        emitSucceeded();
-    }
-}
-
-void JavaCheckerJob::executeTask()
-{
-    qDebug() << m_job_name.toLocal8Bit() << " started.";
-    for (auto iter : javacheckers) {
-        javaresults.append(JavaCheckResult());
-        connect(iter.get(), &JavaChecker::checkFinished, this, &JavaCheckerJob::partFinished);
-        iter->performCheck();
-    }
-}

launcher/java/JavaCheckerJob.h

@@ -1,56 +0,0 @@
-/* Copyright 2013-2021 MultiMC Contributors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <QtNetwork>
-#include "JavaChecker.h"
-#include "tasks/Task.h"
-
-class JavaCheckerJob;
-using JavaCheckerJobPtr = shared_qobject_ptr<JavaCheckerJob>;
-
-// FIXME: this just seems horribly redundant
-class JavaCheckerJob : public Task {
-    Q_OBJECT
-   public:
-    explicit JavaCheckerJob(QString job_name) : Task(), m_job_name(job_name) {};
-    virtual ~JavaCheckerJob() {};
-
-    bool addJavaCheckerAction(JavaCheckerPtr base)
-    {
-        javacheckers.append(base);
-        // if this is already running, the action needs to be started right away!
-        if (isRunning()) {
-            setProgress(num_finished, javacheckers.size());
-            connect(base.get(), &JavaChecker::checkFinished, this, &JavaCheckerJob::partFinished);
-            base->performCheck();
-        }
-        return true;
-    }
-    QList<JavaCheckResult> getResults() { return javaresults; }
-
-   private slots:
-    void partFinished(JavaCheckResult result);
-
-   protected:
-    virtual void executeTask() override;
-
-   private:
-    QString m_job_name;
-    QList<JavaCheckerPtr> javacheckers;
-    QList<JavaCheckResult> javaresults;
-    int num_finished = 0;
-};

launcher/java/JavaInstall.cpp

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-only
 /*
  *  Prism Launcher - Minecraft Launcher
- *  Copyright (c) 2023 Trial97 <alexandru.tripon97@gmail.com>
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by

launcher/java/JavaInstall.h

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-only
 /*
  *  Prism Launcher - Minecraft Launcher
- *  Copyright (c) 2023 Trial97 <alexandru.tripon97@gmail.com>
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -40,6 +40,7 @@ struct JavaInstall : public BaseVersion {
     QString arch;
     QString path;
     bool recommended = false;
+    bool is_64bit = false;
 };
 
 using JavaInstallPtr = std::shared_ptr<JavaInstall>;

launcher/java/JavaInstallList.cpp

@@ -38,13 +38,17 @@
 #include <QtXml>
 
 #include <QDebug>
+#include <algorithm>
 
-#include "java/JavaCheckerJob.h"
+#include "Application.h"
+#include "java/JavaChecker.h"
 #include "java/JavaInstallList.h"
 #include "java/JavaUtils.h"
-#include "minecraft/VersionFilterData.h"
+#include "tasks/ConcurrentTask.h"
 
-JavaInstallList::JavaInstallList(QObject* parent) : BaseVersionList(parent) {}
+JavaInstallList::JavaInstallList(QObject* parent, bool onlyManagedVersions)
+    : BaseVersionList(parent), m_only_managed_versions(onlyManagedVersions)
+{}
 
 Task::Ptr JavaInstallList::getLoadTask()
 {
@@ -55,7 +59,7 @@ Task::Ptr JavaInstallList::getLoadTask()
 Task::Ptr JavaInstallList::getCurrentTask()
 {
     if (m_status == Status::InProgress) {
-        return m_loadTask;
+        return m_load_task;
     }
     return nullptr;
 }
@@ -64,8 +68,8 @@ void JavaInstallList::load()
 {
     if (m_status != Status::InProgress) {
         m_status = Status::InProgress;
-        m_loadTask.reset(new JavaListLoadTask(this));
+        m_load_task.reset(new JavaListLoadTask(this, m_only_managed_versions));
-        m_loadTask->start();
+        m_load_task->start();
     }
 }
 
@@ -106,7 +110,7 @@ QVariant JavaInstallList::data(const QModelIndex& index, int role) const
             return version->recommended;
         case PathRole:
             return version->path;
-        case ArchitectureRole:
+        case CPUArchitectureRole:
             return version->arch;
         default:
             return QVariant();
@@ -115,7 +119,7 @@ QVariant JavaInstallList::data(const QModelIndex& index, int role) const
 
 BaseVersionList::RoleList JavaInstallList::providesRoles() const
 {
-    return { VersionPointerRole, VersionIdRole, VersionRole, RecommendedRole, PathRole, ArchitectureRole };
+    return { VersionPointerRole, VersionIdRole, VersionRole, RecommendedRole, PathRole, CPUArchitectureRole };
 }
 
 void JavaInstallList::updateListData(QList<BaseVersion::Ptr> versions)
@@ -129,7 +133,7 @@ void JavaInstallList::updateListData(QList<BaseVersion::Ptr> versions)
     }
     endResetModel();
     m_status = Status::Done;
-    m_loadTask.reset();
+    m_load_task.reset();
 }
 
 bool sortJavas(BaseVersion::Ptr left, BaseVersion::Ptr right)
@@ -146,35 +150,30 @@ void JavaInstallList::sortVersions()
     endResetModel();
 }
 
-JavaListLoadTask::JavaListLoadTask(JavaInstallList* vlist) : Task()
+JavaListLoadTask::JavaListLoadTask(JavaInstallList* vlist, bool onlyManagedVersions) : Task(), m_only_managed_versions(onlyManagedVersions)
 {
     m_list = vlist;
-    m_currentRecommended = NULL;
+    m_current_recommended = NULL;
 }
 
-JavaListLoadTask::~JavaListLoadTask() {}
-
 void JavaListLoadTask::executeTask()
 {
     setStatus(tr("Detecting Java installations..."));
 
     JavaUtils ju;
-    QList<QString> candidate_paths = ju.FindJavaPaths();
+    QList<QString> candidate_paths = m_only_managed_versions ? getPrismJavaBundle() : ju.FindJavaPaths();
 
-    m_job.reset(new JavaCheckerJob("Java detection"));
+    ConcurrentTask::Ptr job(new ConcurrentTask(this, "Java detection", APPLICATION->settings()->get("NumberOfConcurrentTasks").toInt()));
+    m_job.reset(job);
     connect(m_job.get(), &Task::finished, this, &JavaListLoadTask::javaCheckerFinished);
     connect(m_job.get(), &Task::progress, this, &Task::setProgress);
 
     qDebug() << "Probing the following Java paths: ";
     int id = 0;
     for (QString candidate : candidate_paths) {
-        qDebug() << " " << candidate;
+        auto checker = new JavaChecker(candidate, "", 0, 0, 0, id, this);
-
+        connect(checker, &JavaChecker::checkFinished, [this](const JavaChecker::Result& result) { m_results << result; });
-        auto candidate_checker = new JavaChecker();
+        job->addTask(Task::Ptr(checker));
-        candidate_checker->m_path = candidate;
-        candidate_checker->m_id = id;
-        m_job->addJavaCheckerAction(JavaCheckerPtr(candidate_checker));
-
         id++;
     }
 
@@ -184,16 +183,17 @@ void JavaListLoadTask::executeTask()
 void JavaListLoadTask::javaCheckerFinished()
 {
     QList<JavaInstallPtr> candidates;
-    auto results = m_job->getResults();
+    std::sort(m_results.begin(), m_results.end(), [](const JavaChecker::Result& a, const JavaChecker::Result& b) { return a.id < b.id; });
 
     qDebug() << "Found the following valid Java installations:";
-    for (JavaCheckResult result : results) {
+    for (auto result : m_results) {
-        if (result.validity == JavaCheckResult::Validity::Valid) {
+        if (result.validity == JavaChecker::Result::Validity::Valid) {
             JavaInstallPtr javaVersion(new JavaInstall());
 
             javaVersion->id = result.javaVersion;
             javaVersion->arch = result.realPlatform;
             javaVersion->path = result.path;
+            javaVersion->is_64bit = result.is_64bit;
             candidates.append(javaVersion);
 
             qDebug() << " " << javaVersion->id.toString() << javaVersion->arch << javaVersion->path;

launcher/java/JavaInstallList.h

@@ -19,9 +19,9 @@
 #include <QObject>
 
 #include "BaseVersionList.h"
+#include "java/JavaChecker.h"
 #include "tasks/Task.h"
 
-#include "JavaCheckerJob.h"
 #include "JavaInstall.h"
 
 #include "QObjectPtr.h"
@@ -33,9 +33,9 @@ class JavaInstallList : public BaseVersionList {
     enum class Status { NotDone, InProgress, Done };
 
    public:
-    explicit JavaInstallList(QObject* parent = 0);
+    explicit JavaInstallList(QObject* parent = 0, bool onlyManagedVersions = false);
 
-    Task::Ptr getLoadTask() override;
+    [[nodiscard]] Task::Ptr getLoadTask() override;
     bool isLoaded() override;
     const BaseVersion::Ptr at(int i) const override;
     int count() const override;
@@ -53,23 +53,27 @@ class JavaInstallList : public BaseVersionList {
 
    protected:
     Status m_status = Status::NotDone;
-    shared_qobject_ptr<JavaListLoadTask> m_loadTask;
+    shared_qobject_ptr<JavaListLoadTask> m_load_task;
     QList<BaseVersion::Ptr> m_vlist;
+    bool m_only_managed_versions;
 };
 
 class JavaListLoadTask : public Task {
     Q_OBJECT
 
    public:
-    explicit JavaListLoadTask(JavaInstallList* vlist);
+    explicit JavaListLoadTask(JavaInstallList* vlist, bool onlyManagedVersions = false);
-    virtual ~JavaListLoadTask();
+    virtual ~JavaListLoadTask() = default;
 
+   protected:
     void executeTask() override;
    public slots:
     void javaCheckerFinished();
 
    protected:
-    shared_qobject_ptr<JavaCheckerJob> m_job;
+    Task::Ptr m_job;
     JavaInstallList* m_list;
-    JavaInstall* m_currentRecommended;
+    JavaInstall* m_current_recommended;
+    QList<JavaChecker::Result> m_results;
+    bool m_only_managed_versions;
 };

launcher/java/JavaMetadata.cpp

@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "java/JavaMetadata.h"
+
+#include <memory>
+
+#include "Json.h"
+#include "StringUtils.h"
+#include "java/JavaVersion.h"
+#include "minecraft/ParseUtils.h"
+
+namespace Java {
+
+DownloadType parseDownloadType(QString javaDownload)
+{
+    if (javaDownload == "manifest")
+        return DownloadType::Manifest;
+    else if (javaDownload == "archive")
+        return DownloadType::Archive;
+    else
+        return DownloadType::Unknown;
+}
+QString downloadTypeToString(DownloadType javaDownload)
+{
+    switch (javaDownload) {
+        case DownloadType::Manifest:
+            return "manifest";
+        case DownloadType::Archive:
+            return "archive";
+        case DownloadType::Unknown:
+            break;
+    }
+    return "unknown";
+}
+MetadataPtr parseJavaMeta(const QJsonObject& in)
+{
+    auto meta = std::make_shared<Metadata>();
+
+    meta->m_name = Json::ensureString(in, "name", "");
+    meta->vendor = Json::ensureString(in, "vendor", "");
+    meta->url = Json::ensureString(in, "url", "");
+    meta->releaseTime = timeFromS3Time(Json::ensureString(in, "releaseTime", ""));
+    meta->downloadType = parseDownloadType(Json::ensureString(in, "downloadType", ""));
+    meta->packageType = Json::ensureString(in, "packageType", "");
+    meta->runtimeOS = Json::ensureString(in, "runtimeOS", "unknown");
+
+    if (in.contains("checksum")) {
+        auto obj = Json::requireObject(in, "checksum");
+        meta->checksumHash = Json::ensureString(obj, "hash", "");
+        meta->checksumType = Json::ensureString(obj, "type", "");
+    }
+
+    if (in.contains("version")) {
+        auto obj = Json::requireObject(in, "version");
+        auto name = Json::ensureString(obj, "name", "");
+        auto major = Json::ensureInteger(obj, "major", 0);
+        auto minor = Json::ensureInteger(obj, "minor", 0);
+        auto security = Json::ensureInteger(obj, "security", 0);
+        auto build = Json::ensureInteger(obj, "build", 0);
+        meta->version = JavaVersion(major, minor, security, build, name);
+    }
+    return meta;
+}
+
+bool Metadata::operator<(const Metadata& rhs)
+{
+    auto id = version;
+    if (id < rhs.version) {
+        return true;
+    }
+    if (id > rhs.version) {
+        return false;
+    }
+    auto date = releaseTime;
+    if (date < rhs.releaseTime) {
+        return true;
+    }
+    if (date > rhs.releaseTime) {
+        return false;
+    }
+    return StringUtils::naturalCompare(m_name, rhs.m_name, Qt::CaseInsensitive) < 0;
+}
+
+bool Metadata::operator==(const Metadata& rhs)
+{
+    return version == rhs.version && m_name == rhs.m_name;
+}
+
+bool Metadata::operator>(const Metadata& rhs)
+{
+    return (!operator<(rhs)) && (!operator==(rhs));
+}
+
+bool Metadata::operator<(BaseVersion& a)
+{
+    try {
+        return operator<(dynamic_cast<Metadata&>(a));
+    } catch (const std::bad_cast& e) {
+        return BaseVersion::operator<(a);
+    }
+}
+
+bool Metadata::operator>(BaseVersion& a)
+{
+    try {
+        return operator>(dynamic_cast<Metadata&>(a));
+    } catch (const std::bad_cast& e) {
+        return BaseVersion::operator>(a);
+    }
+}
+
+}  // namespace Java

launcher/java/JavaMetadata.h

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <QDateTime>
+#include <QJsonObject>
+#include <QString>
+
+#include <memory>
+
+#include "BaseVersion.h"
+#include "java/JavaVersion.h"
+
+namespace Java {
+
+enum class DownloadType { Manifest, Archive, Unknown };
+
+class Metadata : public BaseVersion {
+   public:
+    virtual QString descriptor() override { return version.toString(); }
+
+    virtual QString name() override { return m_name; }
+
+    virtual QString typeString() const override { return vendor; }
+
+    virtual bool operator<(BaseVersion& a) override;
+    virtual bool operator>(BaseVersion& a) override;
+    bool operator<(const Metadata& rhs);
+    bool operator==(const Metadata& rhs);
+    bool operator>(const Metadata& rhs);
+
+    QString m_name;
+    QString vendor;
+    QString url;
+    QDateTime releaseTime;
+    QString checksumType;
+    QString checksumHash;
+    DownloadType downloadType;
+    QString packageType;
+    JavaVersion version;
+    QString runtimeOS;
+};
+using MetadataPtr = std::shared_ptr<Metadata>;
+
+DownloadType parseDownloadType(QString javaDownload);
+QString downloadTypeToString(DownloadType javaDownload);
+MetadataPtr parseJavaMeta(const QJsonObject& libObj);
+
+}  // namespace Java

launcher/java/JavaUtils.cpp

@@ -182,8 +182,9 @@ QList<JavaInstallPtr> JavaUtils::FindJavaFromRegistryKey(DWORD keyType, QString
     else if (keyType == KEY_WOW64_32KEY)
         archType = "32";
 
+    for (HKEY baseRegistry : { HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE }) {
         HKEY jreKey;
-    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, keyName.toStdWString().c_str(), 0, KEY_READ | keyType | KEY_ENUMERATE_SUB_KEYS, &jreKey) ==
+        if (RegOpenKeyExW(baseRegistry, keyName.toStdWString().c_str(), 0, KEY_READ | keyType | KEY_ENUMERATE_SUB_KEYS, &jreKey) ==
             ERROR_SUCCESS) {
             // Read the current type version from the registry.
             // This will be used to find any key that contains the JavaHome value.
@@ -205,7 +206,7 @@ QList<JavaInstallPtr> JavaUtils::FindJavaFromRegistryKey(DWORD keyType, QString
                         QString newKeyName = keyName + "\\" + newSubkeyName + subkeySuffix;
 
                         HKEY newKey;
-                    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, newKeyName.toStdWString().c_str(), 0, KEY_READ | keyType, &newKey) ==
+                        if (RegOpenKeyExW(baseRegistry, newKeyName.toStdWString().c_str(), 0, KEY_READ | keyType, &newKey) ==
                             ERROR_SUCCESS) {
                             // Read the JavaHome value to find where Java is installed.
                             DWORD valueSz = 0;
@@ -233,6 +234,7 @@ QList<JavaInstallPtr> JavaUtils::FindJavaFromRegistryKey(DWORD keyType, QString
 
             RegCloseKey(jreKey);
         }
+    }
 
     return javas;
 }
@@ -345,6 +347,7 @@ QList<QString> JavaUtils::FindJavaPaths()
     }
 
     candidates.append(getMinecraftJavaBundle());
+    candidates.append(getPrismJavaBundle());
     candidates = addJavasFromEnv(candidates);
     candidates.removeDuplicates();
     return candidates;
@@ -389,6 +392,7 @@ QList<QString> JavaUtils::FindJavaPaths()
     }
 
     javas.append(getMinecraftJavaBundle());
+    javas.append(getPrismJavaBundle());
     javas = addJavasFromEnv(javas);
     javas.removeDuplicates();
     return javas;
@@ -452,6 +456,7 @@ QList<QString> JavaUtils::FindJavaPaths()
     scanJavaDirs(FS::PathCombine(home, ".gradle/jdks"));
 
     javas.append(getMinecraftJavaBundle());
+    javas.append(getPrismJavaBundle());
     javas = addJavasFromEnv(javas);
     javas.removeDuplicates();
     return javas;
@@ -465,6 +470,8 @@ QList<QString> JavaUtils::FindJavaPaths()
     javas.append(this->GetDefaultJava()->path);
 
     javas.append(getMinecraftJavaBundle());
+    javas.append(getPrismJavaBundle());
+    javas.removeDuplicates();
     return addJavasFromEnv(javas);
 }
 #endif
@@ -476,12 +483,10 @@ QString JavaUtils::getJavaCheckPath()
 
 QStringList getMinecraftJavaBundle()
 {
-    QString executable = "java";
     QStringList processpaths;
 #if defined(Q_OS_OSX)
     processpaths << FS::PathCombine(QDir::homePath(), FS::PathCombine("Library", "Application Support", "minecraft", "runtime"));
 #elif defined(Q_OS_WIN32)
-    executable += "w.exe";
 
     auto appDataPath = QProcessEnvironment::systemEnvironment().value("APPDATA", "");
     processpaths << FS::PathCombine(QFileInfo(appDataPath).absoluteFilePath(), ".minecraft", "runtime");
@@ -506,7 +511,7 @@ QStringList getMinecraftJavaBundle()
         auto binFound = false;
         for (auto& entry : entries) {
             if (entry.baseName() == "bin") {
-                javas.append(FS::PathCombine(entry.canonicalFilePath(), executable));
+                javas.append(FS::PathCombine(entry.canonicalFilePath(), JavaUtils::javaExecutable));
                 binFound = true;
                 break;
             }
@@ -519,3 +524,33 @@ QStringList getMinecraftJavaBundle()
     }
     return javas;
 }
+
+#if defined(Q_OS_WIN32)
+const QString JavaUtils::javaExecutable = "javaw.exe";
+#else
+const QString JavaUtils::javaExecutable = "java";
+#endif
+
+QStringList getPrismJavaBundle()
+{
+    QList<QString> javas;
+
+    auto scanDir = [&](QString prefix) {
+        javas.append(FS::PathCombine(prefix, "jre", "bin", JavaUtils::javaExecutable));
+        javas.append(FS::PathCombine(prefix, "bin", JavaUtils::javaExecutable));
+        javas.append(FS::PathCombine(prefix, JavaUtils::javaExecutable));
+    };
+    auto scanJavaDir = [&](const QString& dirPath) {
+        QDir dir(dirPath);
+        if (!dir.exists())
+            return;
+        auto entries = dir.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot);
+        for (auto& entry : entries) {
+            scanDir(entry.canonicalFilePath());
+        }
+    };
+
+    scanJavaDir(APPLICATION->javaPath());
+
+    return javas;
+}

launcher/java/JavaUtils.h

@@ -15,10 +15,9 @@
 
 #pragma once
 
+#include <QProcess>
 #include <QStringList>
-
+#include "java/JavaInstall.h"
-#include "JavaChecker.h"
-#include "JavaInstallList.h"
 
 #ifdef Q_OS_WIN
 #include <windows.h>
@@ -27,6 +26,7 @@
 QString stripVariableEntries(QString name, QString target, QString remove);
 QProcessEnvironment CleanEnviroment();
 QStringList getMinecraftJavaBundle();
+QStringList getPrismJavaBundle();
 
 class JavaUtils : public QObject {
     Q_OBJECT
@@ -42,4 +42,5 @@ class JavaUtils : public QObject {
 #endif
 
     static QString getJavaCheckPath();
+    static const QString javaExecutable;
 };

launcher/java/JavaVersion.cpp

@@ -43,12 +43,12 @@ QString JavaVersion::toString() const
     return m_string;
 }
 
-bool JavaVersion::requiresPermGen()
+bool JavaVersion::requiresPermGen() const
 {
     return !m_parseable || m_major < 8;
 }
 
-bool JavaVersion::isModular()
+bool JavaVersion::isModular() const
 {
     return m_parseable && m_major >= 9;
 }
@@ -59,12 +59,6 @@ bool JavaVersion::operator<(const JavaVersion& rhs)
         auto major = m_major;
         auto rmajor = rhs.m_major;
 
-        // HACK: discourage using java 9
-        if (major > 8)
-            major = -major;
-        if (rmajor > 8)
-            rmajor = -rmajor;
-
         if (major < rmajor)
             return true;
         if (major > rmajor)
@@ -109,3 +103,24 @@ bool JavaVersion::operator>(const JavaVersion& rhs)
 {
     return (!operator<(rhs)) && (!operator==(rhs));
 }
+
+JavaVersion::JavaVersion(int major, int minor, int security, int build, QString name)
+    : m_major(major), m_minor(minor), m_security(security), m_name(name), m_parseable(true)
+{
+    QStringList versions;
+    if (build != 0) {
+        m_prerelease = QString::number(build);
+        versions.push_front(m_prerelease);
+    }
+    if (m_security != 0)
+        versions.push_front(QString::number(m_security));
+    else if (!versions.isEmpty())
+        versions.push_front("0");
+
+    if (m_minor != 0)
+        versions.push_front(QString::number(m_minor));
+    else if (!versions.isEmpty())
+        versions.push_front("0");
+    versions.push_front(QString::number(m_major));
+    m_string = versions.join(".");
+}

launcher/java/JavaVersion.h

@@ -16,6 +16,7 @@ class JavaVersion {
    public:
     JavaVersion() {}
     JavaVersion(const QString& rhs);
+    JavaVersion(int major, int minor, int security, int build = 0, QString name = "");
 
     JavaVersion& operator=(const QString& rhs);
 
@@ -23,21 +24,24 @@ class JavaVersion {
     bool operator==(const JavaVersion& rhs);
     bool operator>(const JavaVersion& rhs);
 
-    bool requiresPermGen();
+    bool requiresPermGen() const;
 
-    bool isModular();
+    bool isModular() const;
 
     QString toString() const;
 
-    int major() { return m_major; }
+    int major() const { return m_major; }
-    int minor() { return m_minor; }
+    int minor() const { return m_minor; }
-    int security() { return m_security; }
+    int security() const { return m_security; }
+    QString build() const { return m_prerelease; }
+    QString name() const { return m_name; }
 
    private:
     QString m_string;
     int m_major = 0;
     int m_minor = 0;
     int m_security = 0;
+    QString m_name = "";
     bool m_parseable = false;
     QString m_prerelease;
 };

launcher/java/download/ArchiveDownloadTask.cpp

@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "java/download/ArchiveDownloadTask.h"
+#include <quazip.h>
+#include <memory>
+#include "MMCZip.h"
+
+#include "Application.h"
+#include "Untar.h"
+#include "net/ChecksumValidator.h"
+#include "net/NetJob.h"
+#include "tasks/Task.h"
+
+namespace Java {
+ArchiveDownloadTask::ArchiveDownloadTask(QUrl url, QString final_path, QString checksumType, QString checksumHash)
+    : m_url(url), m_final_path(final_path), m_checksum_type(checksumType), m_checksum_hash(checksumHash)
+{}
+
+void ArchiveDownloadTask::executeTask()
+{
+    // JRE found ! download the zip
+    setStatus(tr("Downloading Java"));
+
+    MetaEntryPtr entry = APPLICATION->metacache()->resolveEntry("java", m_url.fileName());
+
+    auto download = makeShared<NetJob>(QString("JRE::DownloadJava"), APPLICATION->network());
+    auto action = Net::Download::makeCached(m_url, entry);
+    if (!m_checksum_hash.isEmpty() && !m_checksum_type.isEmpty()) {
+        auto hashType = QCryptographicHash::Algorithm::Sha1;
+        if (m_checksum_type == "sha256") {
+            hashType = QCryptographicHash::Algorithm::Sha256;
+        }
+        action->addValidator(new Net::ChecksumValidator(hashType, QByteArray::fromHex(m_checksum_hash.toUtf8())));
+    }
+    download->addNetAction(action);
+    auto fullPath = entry->getFullPath();
+
+    connect(download.get(), &Task::failed, this, &ArchiveDownloadTask::emitFailed);
+    connect(download.get(), &Task::progress, this, &ArchiveDownloadTask::setProgress);
+    connect(download.get(), &Task::stepProgress, this, &ArchiveDownloadTask::propagateStepProgress);
+    connect(download.get(), &Task::status, this, &ArchiveDownloadTask::setStatus);
+    connect(download.get(), &Task::details, this, &ArchiveDownloadTask::setDetails);
+    connect(download.get(), &Task::succeeded, [this, fullPath] {
+        // This should do all of the extracting and creating folders
+        extractJava(fullPath);
+    });
+    m_task = download;
+    m_task->start();
+}
+
+void ArchiveDownloadTask::extractJava(QString input)
+{
+    setStatus(tr("Extracting java"));
+    if (input.endsWith("tar")) {
+        setStatus(tr("Extracting Java (Progress is not reported for tar archives)"));
+        QFile in(input);
+        if (!in.open(QFile::ReadOnly)) {
+            emitFailed(tr("Unable to open supplied tar file."));
+            return;
+        }
+        if (!Tar::extract(&in, QDir(m_final_path).absolutePath())) {
+            emitFailed(tr("Unable to extract supplied tar file."));
+            return;
+        }
+        emitSucceeded();
+        return;
+    } else if (input.endsWith("tar.gz") || input.endsWith("taz") || input.endsWith("tgz")) {
+        setStatus(tr("Extracting Java (Progress is not reported for tar archives)"));
+        if (!GZTar::extract(input, QDir(m_final_path).absolutePath())) {
+            emitFailed(tr("Unable to extract supplied tar file."));
+            return;
+        }
+        emitSucceeded();
+        return;
+    } else if (input.endsWith("zip")) {
+        auto zip = std::make_shared<QuaZip>(input);
+        if (!zip->open(QuaZip::mdUnzip)) {
+            emitFailed(tr("Unable to open supplied zip file."));
+            return;
+        }
+        auto files = zip->getFileNameList();
+        if (files.isEmpty()) {
+            emitFailed(tr("No files were found in the supplied zip file,"));
+            return;
+        }
+        m_task = makeShared<MMCZip::ExtractZipTask>(zip, m_final_path, files[0]);
+
+        auto progressStep = std::make_shared<TaskStepProgress>();
+        connect(m_task.get(), &Task::finished, this, [this, progressStep] {
+            progressStep->state = TaskStepState::Succeeded;
+            stepProgress(*progressStep);
+        });
+
+        connect(m_task.get(), &Task::succeeded, this, &ArchiveDownloadTask::emitSucceeded);
+        connect(m_task.get(), &Task::aborted, this, &ArchiveDownloadTask::emitAborted);
+        connect(m_task.get(), &Task::failed, this, [this, progressStep](QString reason) {
+            progressStep->state = TaskStepState::Failed;
+            stepProgress(*progressStep);
+            emitFailed(reason);
+        });
+        connect(m_task.get(), &Task::stepProgress, this, &ArchiveDownloadTask::propagateStepProgress);
+
+        connect(m_task.get(), &Task::progress, this, [this, progressStep](qint64 current, qint64 total) {
+            progressStep->update(current, total);
+            stepProgress(*progressStep);
+        });
+        connect(m_task.get(), &Task::status, this, [this, progressStep](QString status) {
+            progressStep->status = status;
+            stepProgress(*progressStep);
+        });
+        m_task->start();
+        return;
+    }
+
+    emitFailed(tr("Could not determine archive type!"));
+}
+
+bool ArchiveDownloadTask::abort()
+{
+    auto aborted = canAbort();
+    if (m_task)
+        aborted = m_task->abort();
+    emitAborted();
+    return aborted;
+};
+}  // namespace Java

launcher/java/download/ArchiveDownloadTask.h

@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QUrl>
+#include "tasks/Task.h"
+
+namespace Java {
+class ArchiveDownloadTask : public Task {
+    Q_OBJECT
+   public:
+    ArchiveDownloadTask(QUrl url, QString final_path, QString checksumType = "", QString checksumHash = "");
+    virtual ~ArchiveDownloadTask() = default;
+
+    [[nodiscard]] bool canAbort() const override { return true; }
+    void executeTask() override;
+    virtual bool abort() override;
+
+   private slots:
+    void extractJava(QString input);
+
+   protected:
+    QUrl m_url;
+    QString m_final_path;
+    QString m_checksum_type;
+    QString m_checksum_hash;
+    Task::Ptr m_task;
+};
+}  // namespace Java

launcher/java/download/ManifestDownloadTask.cpp

@@ -0,0 +1,138 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "java/download/ManifestDownloadTask.h"
+
+#include "Application.h"
+#include "FileSystem.h"
+#include "Json.h"
+#include "net/ChecksumValidator.h"
+#include "net/NetJob.h"
+
+struct File {
+    QString path;
+    QString url;
+    QByteArray hash;
+    bool isExec;
+};
+
+namespace Java {
+ManifestDownloadTask::ManifestDownloadTask(QUrl url, QString final_path, QString checksumType, QString checksumHash)
+    : m_url(url), m_final_path(final_path), m_checksum_type(checksumType), m_checksum_hash(checksumHash)
+{}
+
+void ManifestDownloadTask::executeTask()
+{
+    setStatus(tr("Downloading Java"));
+    auto download = makeShared<NetJob>(QString("JRE::DownloadJava"), APPLICATION->network());
+    auto files = std::make_shared<QByteArray>();
+
+    auto action = Net::Download::makeByteArray(m_url, files);
+    if (!m_checksum_hash.isEmpty() && !m_checksum_type.isEmpty()) {
+        auto hashType = QCryptographicHash::Algorithm::Sha1;
+        if (m_checksum_type == "sha256") {
+            hashType = QCryptographicHash::Algorithm::Sha256;
+        }
+        action->addValidator(new Net::ChecksumValidator(hashType, QByteArray::fromHex(m_checksum_hash.toUtf8())));
+    }
+    download->addNetAction(action);
+
+    connect(download.get(), &Task::failed, this, &ManifestDownloadTask::emitFailed);
+    connect(download.get(), &Task::progress, this, &ManifestDownloadTask::setProgress);
+    connect(download.get(), &Task::stepProgress, this, &ManifestDownloadTask::propagateStepProgress);
+    connect(download.get(), &Task::status, this, &ManifestDownloadTask::setStatus);
+    connect(download.get(), &Task::details, this, &ManifestDownloadTask::setDetails);
+
+    connect(download.get(), &Task::succeeded, [files, this] {
+        QJsonParseError parse_error{};
+        QJsonDocument doc = QJsonDocument::fromJson(*files, &parse_error);
+        if (parse_error.error != QJsonParseError::NoError) {
+            qWarning() << "Error while parsing JSON response at " << parse_error.offset << ". Reason: " << parse_error.errorString();
+            qWarning() << *files;
+            emitFailed(parse_error.errorString());
+            return;
+        }
+        downloadJava(doc);
+    });
+    m_task = download;
+    m_task->start();
+}
+
+void ManifestDownloadTask::downloadJava(const QJsonDocument& doc)
+{
+    // valid json doc, begin making jre spot
+    FS::ensureFolderPathExists(m_final_path);
+    std::vector<File> toDownload;
+    auto list = Json::ensureObject(Json::ensureObject(doc.object()), "files");
+    for (const auto& paths : list.keys()) {
+        auto file = FS::PathCombine(m_final_path, paths);
+
+        const QJsonObject& meta = Json::ensureObject(list, paths);
+        auto type = Json::ensureString(meta, "type");
+        if (type == "directory") {
+            FS::ensureFolderPathExists(file);
+        } else if (type == "link") {
+            // this is linux only !
+            auto path = Json::ensureString(meta, "target");
+            if (!path.isEmpty()) {
+                auto target = FS::PathCombine(file, "../" + path);
+                QFile(target).link(file);
+            }
+        } else if (type == "file") {
+            // TODO download compressed version if it exists ?
+            auto raw = Json::ensureObject(Json::ensureObject(meta, "downloads"), "raw");
+            auto isExec = Json::ensureBoolean(meta, "executable", false);
+            auto url = Json::ensureString(raw, "url");
+            if (!url.isEmpty() && QUrl(url).isValid()) {
+                auto f = File{ file, url, QByteArray::fromHex(Json::ensureString(raw, "sha1").toLatin1()), isExec };
+                toDownload.push_back(f);
+            }
+        }
+    }
+    auto elementDownload = makeShared<NetJob>("JRE::FileDownload", APPLICATION->network());
+    for (const auto& file : toDownload) {
+        auto dl = Net::Download::makeFile(file.url, file.path);
+        if (!file.hash.isEmpty()) {
+            dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, file.hash));
+        }
+        if (file.isExec) {
+            connect(dl.get(), &Net::Download::succeeded,
+                    [file] { QFile(file.path).setPermissions(QFile(file.path).permissions() | QFileDevice::Permissions(0x1111)); });
+        }
+        elementDownload->addNetAction(dl);
+    }
+
+    connect(elementDownload.get(), &Task::failed, this, &ManifestDownloadTask::emitFailed);
+    connect(elementDownload.get(), &Task::progress, this, &ManifestDownloadTask::setProgress);
+    connect(elementDownload.get(), &Task::stepProgress, this, &ManifestDownloadTask::propagateStepProgress);
+    connect(elementDownload.get(), &Task::status, this, &ManifestDownloadTask::setStatus);
+    connect(elementDownload.get(), &Task::details, this, &ManifestDownloadTask::setDetails);
+
+    connect(elementDownload.get(), &Task::succeeded, this, &ManifestDownloadTask::emitSucceeded);
+    m_task = elementDownload;
+    m_task->start();
+}
+
+bool ManifestDownloadTask::abort()
+{
+    auto aborted = canAbort();
+    if (m_task)
+        aborted = m_task->abort();
+    emitAborted();
+    return aborted;
+};
+}  // namespace Java

launcher/java/download/ManifestDownloadTask.h

@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QUrl>
+#include "tasks/Task.h"
+
+namespace Java {
+
+class ManifestDownloadTask : public Task {
+    Q_OBJECT
+   public:
+    ManifestDownloadTask(QUrl url, QString final_path, QString checksumType = "", QString checksumHash = "");
+    virtual ~ManifestDownloadTask() = default;
+
+    [[nodiscard]] bool canAbort() const override { return true; }
+    void executeTask() override;
+    virtual bool abort() override;
+
+   private slots:
+    void downloadJava(const QJsonDocument& doc);
+
+   protected:
+    QUrl m_url;
+    QString m_final_path;
+    QString m_checksum_type;
+    QString m_checksum_hash;
+    Task::Ptr m_task;
+};
+}  // namespace Java

launcher/launch/steps/CheckJava.cpp

@@ -37,6 +37,7 @@
 #include <FileSystem.h>
 #include <launch/LaunchTask.h>
 #include <sys.h>
+#include <QCryptographicHash>
 #include <QFileInfo>
 #include <QStandardPaths>
 #include "java/JavaUtils.h"
@@ -45,20 +46,23 @@ void CheckJava::executeTask()
 {
     auto instance = m_parent->instance();
     auto settings = instance->settings();
-    m_javaPath = FS::ResolveExecutable(settings->get("JavaPath").toString());
+
+    QString javaPathSetting = settings->get("JavaPath").toString();
+    m_javaPath = FS::ResolveExecutable(javaPathSetting);
+
     bool perInstance = settings->get("OverrideJava").toBool() || settings->get("OverrideJavaLocation").toBool();
 
     auto realJavaPath = QStandardPaths::findExecutable(m_javaPath);
     if (realJavaPath.isEmpty()) {
         if (perInstance) {
-            emit logLine(QString("The java binary \"%1\" couldn't be found. Please fix the java path "
+            emit logLine(QString("The Java binary \"%1\" couldn't be found. Please fix the Java path "
                                  "override in the instance's settings or disable it.")
-                             .arg(m_javaPath),
+                             .arg(javaPathSetting),
                          MessageLevel::Warning);
         } else {
-            emit logLine(QString("The java binary \"%1\" couldn't be found. Please set up java in "
+            emit logLine(QString("The Java binary \"%1\" couldn't be found. Please set up Java in "
                                  "the settings.")
-                             .arg(m_javaPath),
+                             .arg(javaPathSetting),
                          MessageLevel::Warning);
         }
         emitFailed(QString("Java path is not valid."));
@@ -90,11 +94,10 @@ void CheckJava::executeTask()
     // if timestamps are not the same, or something is missing, check!
     if (m_javaSignature != storedSignature || storedVersion.size() == 0 || storedArchitecture.size() == 0 ||
         storedRealArchitecture.size() == 0 || storedVendor.size() == 0) {
-        m_JavaChecker.reset(new JavaChecker);
+        m_JavaChecker.reset(new JavaChecker(realJavaPath, "", 0, 0, 0, 0, this));
         emit logLine(QString("Checking Java version..."), MessageLevel::Launcher);
         connect(m_JavaChecker.get(), &JavaChecker::checkFinished, this, &CheckJava::checkJavaFinished);
-        m_JavaChecker->m_path = realJavaPath;
+        m_JavaChecker->start();
-        m_JavaChecker->performCheck();
         return;
     } else {
         auto verString = instance->settings()->get("JavaVersion").toString();
@@ -106,10 +109,10 @@ void CheckJava::executeTask()
     emitSucceeded();
 }
 
-void CheckJava::checkJavaFinished(JavaCheckResult result)
+void CheckJava::checkJavaFinished(const JavaChecker::Result& result)
 {
     switch (result.validity) {
-        case JavaCheckResult::Validity::Errored: {
+        case JavaChecker::Result::Validity::Errored: {
             // Error message displayed if java can't start
             emit logLine(QString("Could not start java:"), MessageLevel::Error);
             emit logLines(result.errorLog.split('\n'), MessageLevel::Error);
@@ -117,14 +120,14 @@ void CheckJava::checkJavaFinished(JavaCheckResult result)
             emitFailed(QString("Could not start java!"));
             return;
         }
-        case JavaCheckResult::Validity::ReturnedInvalidData: {
+        case JavaChecker::Result::Validity::ReturnedInvalidData: {
             emit logLine(QString("Java checker returned some invalid data we don't understand:"), MessageLevel::Error);
             emit logLines(result.outLog.split('\n'), MessageLevel::Warning);
             emit logLine("\nMinecraft might not start properly.", MessageLevel::Launcher);
             emitSucceeded();
             return;
         }
-        case JavaCheckResult::Validity::Valid: {
+        case JavaChecker::Result::Validity::Valid: {
             auto instance = m_parent->instance();
             printJavaInfo(result.javaVersion.toString(), result.mojangPlatform, result.realPlatform, result.javaVendor);
             instance->settings()->set("JavaVersion", result.javaVersion.toString());

launcher/launch/steps/CheckJava.h

@@ -28,7 +28,7 @@ class CheckJava : public LaunchStep {
     virtual void executeTask();
     virtual bool canAbort() const { return false; }
    private slots:
-    void checkJavaFinished(JavaCheckResult result);
+    void checkJavaFinished(const JavaChecker::Result& result);
 
    private:
     void printJavaInfo(const QString& version, const QString& architecture, const QString& realArchitecture, const QString& vendor);
@@ -37,5 +37,5 @@ class CheckJava : public LaunchStep {
    private:
     QString m_javaPath;
     QString m_javaSignature;
-    JavaCheckerPtr m_JavaChecker;
+    JavaChecker::Ptr m_JavaChecker;
 };

launcher/launch/steps/LookupServerAddress.cpp

@@ -30,7 +30,7 @@ void LookupServerAddress::setLookupAddress(const QString& lookupAddress)
     m_dnsLookup->setName(QString("_minecraft._tcp.%1").arg(lookupAddress));
 }
 
-void LookupServerAddress::setOutputAddressPtr(MinecraftServerTargetPtr output)
+void LookupServerAddress::setOutputAddressPtr(MinecraftTarget::Ptr output)
 {
     m_output = std::move(output);
 }

launcher/launch/steps/LookupServerAddress.h

@@ -19,20 +19,20 @@
 #include <launch/LaunchStep.h>
 #include <QDnsLookup>
 
-#include "minecraft/launch/MinecraftServerTarget.h"
+#include "minecraft/launch/MinecraftTarget.h"
 
 class LookupServerAddress : public LaunchStep {
     Q_OBJECT
    public:
     explicit LookupServerAddress(LaunchTask* parent);
-    virtual ~LookupServerAddress() {};
+    virtual ~LookupServerAddress() = default;
 
     virtual void executeTask();
     virtual bool abort();
     virtual bool canAbort() const { return true; }
 
     void setLookupAddress(const QString& lookupAddress);
-    void setOutputAddressPtr(MinecraftServerTargetPtr output);
+    void setOutputAddressPtr(MinecraftTarget::Ptr output);
 
    private slots:
     void on_dnsLookupFinished();
@@ -42,5 +42,5 @@ class LookupServerAddress : public LaunchStep {
 
     QDnsLookup* m_dnsLookup;
     QString m_lookupAddress;
-    MinecraftServerTargetPtr m_output;
+    MinecraftTarget::Ptr m_output;
 };

launcher/meta/BaseEntity.cpp

@@ -15,19 +15,26 @@
 
 #include "BaseEntity.h"
 
+#include "Exception.h"
 #include "FileSystem.h"
 #include "Json.h"
+#include "modplatform/helpers/HashUtils.h"
 #include "net/ApiDownload.h"
+#include "net/ChecksumValidator.h"
 #include "net/HttpMetaCache.h"
+#include "net/Mode.h"
 #include "net/NetJob.h"
 
 #include "Application.h"
 #include "BuildConfig.h"
+#include "tasks/Task.h"
+
+namespace Meta {
 
 class ParsingValidator : public Net::Validator {
    public: /* con/des */
-    ParsingValidator(Meta::BaseEntity* entity) : m_entity(entity) {};
+    ParsingValidator(BaseEntity* entity) : m_entity(entity) {};
-    virtual ~ParsingValidator() {};
+    virtual ~ParsingValidator() = default;
 
    public: /* methods */
     bool init(QNetworkRequest&) override
@@ -61,92 +68,131 @@ class ParsingValidator : public Net::Validator {
 
    private: /* data */
     QByteArray m_data;
-    Meta::BaseEntity* m_entity;
+    BaseEntity* m_entity;
 };
 
-Meta::BaseEntity::~BaseEntity() {}
+QUrl BaseEntity::url() const
-
-QUrl Meta::BaseEntity::url() const
 {
     auto s = APPLICATION->settings();
     QString metaOverride = s->get("MetaURLOverride").toString();
     if (metaOverride.isEmpty()) {
         return QUrl(BuildConfig.META_URL).resolved(localFilename());
-    } else {
+    }
     return QUrl(metaOverride).resolved(localFilename());
 }
+
+Task::Ptr BaseEntity::loadTask(Net::Mode mode)
+{
+    if (m_task && m_task->isRunning()) {
+        return m_task;
+    }
+    m_task.reset(new BaseEntityLoadTask(this, mode));
+    return m_task;
 }
 
-bool Meta::BaseEntity::loadLocalFile()
+bool BaseEntity::isLoaded() const
 {
-    const QString fname = QDir("meta").absoluteFilePath(localFilename());
+    // consider it loaded only if the main hash is either empty and was remote loadded or the hashes match and was loaded
-    if (!QFile::exists(fname)) {
+    return m_sha256.isEmpty() ? m_load_status == LoadStatus::Remote : m_load_status != LoadStatus::NotLoaded && m_sha256 == m_file_sha256;
-        return false;
 }
-    // TODO: check if the file has the expected checksum
+
+void BaseEntity::setSha256(QString sha256)
+{
+    m_sha256 = sha256;
+}
+
+BaseEntity::LoadStatus BaseEntity::status() const
+{
+    return m_load_status;
+}
+
+BaseEntityLoadTask::BaseEntityLoadTask(BaseEntity* parent, Net::Mode mode) : m_entity(parent), m_mode(mode) {}
+
+void BaseEntityLoadTask::executeTask()
+{
+    const QString fname = QDir("meta").absoluteFilePath(m_entity->localFilename());
+    auto hashMatches = false;
+    // the file exists on disk try to load it
+    if (QFile::exists(fname)) {
         try {
-        auto doc = Json::requireDocument(fname, fname);
+            QByteArray fileData;
+            // read local file if nothing is loaded yet
+            if (m_entity->m_load_status == BaseEntity::LoadStatus::NotLoaded || m_entity->m_file_sha256.isEmpty()) {
+                setStatus(tr("Loading local file"));
+                fileData = FS::read(fname);
+                m_entity->m_file_sha256 = Hashing::hash(fileData, Hashing::Algorithm::Sha256);
+            }
+
+            // on online the hash needs to match
+            hashMatches = m_entity->m_sha256 == m_entity->m_file_sha256;
+            if (m_mode == Net::Mode::Online && !m_entity->m_sha256.isEmpty() && !hashMatches) {
+                throw Exception("mismatched checksum");
+            }
+
+            // load local file
+            if (m_entity->m_load_status == BaseEntity::LoadStatus::NotLoaded) {
+                auto doc = Json::requireDocument(fileData, fname);
                 auto obj = Json::requireObject(doc, fname);
-        parse(obj);
+                m_entity->parse(obj);
-        return true;
+                m_entity->m_load_status = BaseEntity::LoadStatus::Local;
+            }
+
         } catch (const Exception& e) {
             qDebug() << QString("Unable to parse file %1: %2").arg(fname, e.cause());
             // just make sure it's gone and we never consider it again.
-        return !FS::deletePath(fname);
+            FS::deletePath(fname);
-    }
+            m_entity->m_load_status = BaseEntity::LoadStatus::NotLoaded;
-}
-
-void Meta::BaseEntity::load(Net::Mode loadType)
-{
-    // load local file if nothing is loaded yet
-    if (!isLoaded()) {
-        if (loadLocalFile()) {
-            m_loadStatus = LoadStatus::Local;
         }
     }
     // if we need remote update, run the update task
-    if (loadType == Net::Mode::Offline || !shouldStartRemoteUpdate()) {
+    auto wasLoadedOffline = m_entity->m_load_status != BaseEntity::LoadStatus::NotLoaded && m_mode == Net::Mode::Offline;
+    // if has is not present allways fetch from remote(e.g. the main index file), else only fetch if hash doesn't match
+    auto wasLoadedRemote = m_entity->m_sha256.isEmpty() ? m_entity->m_load_status == BaseEntity::LoadStatus::Remote : hashMatches;
+    if (wasLoadedOffline || wasLoadedRemote) {
+        emitSucceeded();
         return;
     }
-    m_updateTask.reset(new NetJob(QObject::tr("Download of meta file %1").arg(localFilename()), APPLICATION->network()));
+    m_task.reset(new NetJob(QObject::tr("Download of meta file %1").arg(m_entity->localFilename()), APPLICATION->network()));
-    auto url = this->url();
+    auto url = m_entity->url();
-    auto entry = APPLICATION->metacache()->resolveEntry("meta", localFilename());
+    auto entry = APPLICATION->metacache()->resolveEntry("meta", m_entity->localFilename());
     entry->setStale(true);
     auto dl = Net::ApiDownload::makeCached(url, entry);
     /*
      * The validator parses the file and loads it into the object.
      * If that fails, the file is not written to storage.
      */
-    dl->addValidator(new ParsingValidator(this));
+    if (!m_entity->m_sha256.isEmpty())
-    m_updateTask->addNetAction(dl);
+        dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Algorithm::Sha256, m_entity->m_sha256));
-    m_updateStatus = UpdateStatus::InProgress;
+    dl->addValidator(new ParsingValidator(m_entity));
-    QObject::connect(m_updateTask.get(), &NetJob::succeeded, [&]() {
+    m_task->addNetAction(dl);
-        m_loadStatus = LoadStatus::Remote;
+    m_task->setAskRetry(false);
-        m_updateStatus = UpdateStatus::Succeeded;
+    connect(m_task.get(), &Task::failed, this, &BaseEntityLoadTask::emitFailed);
-        m_updateTask.reset();
+    connect(m_task.get(), &Task::succeeded, this, &BaseEntityLoadTask::emitSucceeded);
+    connect(m_task.get(), &Task::succeeded, this, [this]() {
+        m_entity->m_load_status = BaseEntity::LoadStatus::Remote;
+        m_entity->m_file_sha256 = m_entity->m_sha256;
     });
-    QObject::connect(m_updateTask.get(), &NetJob::failed, [&]() {
+
-        m_updateStatus = UpdateStatus::Failed;
+    connect(m_task.get(), &Task::progress, this, &Task::setProgress);
-        m_updateTask.reset();
+    connect(m_task.get(), &Task::stepProgress, this, &BaseEntityLoadTask::propagateStepProgress);
-    });
+    connect(m_task.get(), &Task::status, this, &Task::setStatus);
-    m_updateTask->start();
+    connect(m_task.get(), &Task::details, this, &Task::setDetails);
+
+    m_task->start();
 }
 
-bool Meta::BaseEntity::isLoaded() const
+bool BaseEntityLoadTask::canAbort() const
 {
-    return m_loadStatus > LoadStatus::NotLoaded;
+    return m_task ? m_task->canAbort() : false;
 }
 
-bool Meta::BaseEntity::shouldStartRemoteUpdate() const
+bool BaseEntityLoadTask::abort()
 {
-    // TODO: version-locks and offline mode?
+    if (m_task) {
-    return m_updateStatus != UpdateStatus::InProgress;
+        Task::abort();
+        return m_task->abort();
+    }
+    return Task::abort();
 }
 
-Task::Ptr Meta::BaseEntity::getCurrentTask()
+}  // namespace Meta
-{
-    if (m_updateStatus == UpdateStatus::InProgress) {
-        return m_updateTask;
-    }
-    return nullptr;
-}

launcher/meta/BaseEntity.h

@@ -17,38 +17,57 @@
 
 #include <QJsonObject>
 #include <QObject>
-#include "QObjectPtr.h"
 
 #include "net/Mode.h"
 #include "net/NetJob.h"
+#include "tasks/Task.h"
 
 namespace Meta {
+class BaseEntityLoadTask;
 class BaseEntity {
+    friend BaseEntityLoadTask;
+
    public: /* types */
     using Ptr = std::shared_ptr<BaseEntity>;
     enum class LoadStatus { NotLoaded, Local, Remote };
-    enum class UpdateStatus { NotDone, InProgress, Failed, Succeeded };
 
    public:
-    virtual ~BaseEntity();
+    virtual ~BaseEntity() = default;
-
-    virtual void parse(const QJsonObject& obj) = 0;
 
     virtual QString localFilename() const = 0;
     virtual QUrl url() const;
-
     bool isLoaded() const;
-    bool shouldStartRemoteUpdate() const;
+    LoadStatus status() const;
 
-    void load(Net::Mode loadType);
+    /* for parsers */
-    Task::Ptr getCurrentTask();
+    void setSha256(QString sha256);
 
-   protected: /* methods */
+    virtual void parse(const QJsonObject& obj) = 0;
-    bool loadLocalFile();
+    [[nodiscard]] Task::Ptr loadTask(Net::Mode loadType = Net::Mode::Online);
+
+   protected:
+    QString m_sha256;       // the expected sha256
+    QString m_file_sha256;  // the file sha256
 
    private:
-    LoadStatus m_loadStatus = LoadStatus::NotLoaded;
+    LoadStatus m_load_status = LoadStatus::NotLoaded;
-    UpdateStatus m_updateStatus = UpdateStatus::NotDone;
+    Task::Ptr m_task;
-    NetJob::Ptr m_updateTask;
+};
+
+class BaseEntityLoadTask : public Task {
+    Q_OBJECT
+
+   public:
+    explicit BaseEntityLoadTask(BaseEntity* parent, Net::Mode mode);
+    ~BaseEntityLoadTask() override = default;
+
+    virtual void executeTask() override;
+    virtual bool canAbort() const override;
+    virtual bool abort() override;
+
+   private:
+    BaseEntity* m_entity;
+    Net::Mode m_mode;
+    NetJob::Ptr m_task;
 };
 }  // namespace Meta

launcher/meta/Index.cpp

@@ -16,7 +16,10 @@
 #include "Index.h"
 
 #include "JsonFormat.h"
+#include "QObjectPtr.h"
 #include "VersionList.h"
+#include "meta/BaseEntity.h"
+#include "tasks/SequentialTask.h"
 
 namespace Meta {
 Index::Index(QObject* parent) : QAbstractListModel(parent) {}
@@ -51,14 +54,17 @@ QVariant Index::data(const QModelIndex& index, int role) const
     }
     return QVariant();
 }
+
 int Index::rowCount(const QModelIndex& parent) const
 {
     return parent.isValid() ? 0 : m_lists.size();
 }
+
 int Index::columnCount(const QModelIndex& parent) const
 {
     return parent.isValid() ? 0 : 1;
 }
+
 QVariant Index::headerData(int section, Qt::Orientation orientation, int role) const
 {
     if (orientation == Qt::Horizontal && role == Qt::DisplayRole && section == 0) {
@@ -79,6 +85,7 @@ VersionList::Ptr Index::get(const QString& uid)
     if (!out) {
         out = std::make_shared<VersionList>(uid);
         m_uids[uid] = out;
+        m_lists.append(out);
     }
     return out;
 }
@@ -96,7 +103,7 @@ void Index::parse(const QJsonObject& obj)
 
 void Index::merge(const std::shared_ptr<Index>& other)
 {
-    const QVector<VersionList::Ptr> lists = std::dynamic_pointer_cast<Index>(other)->m_lists;
+    const QVector<VersionList::Ptr> lists = other->m_lists;
     // initial load, no need to merge
     if (m_lists.isEmpty()) {
         beginResetModel();
@@ -123,7 +130,33 @@ void Index::merge(const std::shared_ptr<Index>& other)
 
 void Index::connectVersionList(const int row, const VersionList::Ptr& list)
 {
-    connect(list.get(), &VersionList::nameChanged, this,
+    connect(list.get(), &VersionList::nameChanged, this, [this, row] { emit dataChanged(index(row), index(row), { Qt::DisplayRole }); });
-            [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << Qt::DisplayRole); });
+}
+
+Task::Ptr Index::loadVersion(const QString& uid, const QString& version, Net::Mode mode, bool force)
+{
+    if (mode == Net::Mode::Offline) {
+        return get(uid, version)->loadTask(mode);
+    }
+
+    auto versionList = get(uid);
+    auto loadTask = makeShared<SequentialTask>(
+        this, tr("Load meta for %1:%2", "This is for the task name that loads the meta index.").arg(uid, version));
+    if (status() != BaseEntity::LoadStatus::Remote || force) {
+        loadTask->addTask(this->loadTask(mode));
+    }
+    loadTask->addTask(versionList->loadTask(mode));
+    loadTask->addTask(versionList->getVersion(version)->loadTask(mode));
+    return loadTask;
+}
+
+Version::Ptr Index::getLoadedVersion(const QString& uid, const QString& version)
+{
+    QEventLoop ev;
+    auto task = loadVersion(uid, version);
+    QObject::connect(task.get(), &Task::finished, &ev, &QEventLoop::quit);
+    task->start();
+    ev.exec();
+    return get(uid, version);
 }
 }  // namespace Meta

launcher/meta/Index.h

@@ -16,10 +16,10 @@
 #pragma once
 
 #include <QAbstractListModel>
-#include <memory>
 
 #include "BaseEntity.h"
 #include "meta/VersionList.h"
+#include "net/Mode.h"
 
 class Task;
 
@@ -30,6 +30,7 @@ class Index : public QAbstractListModel, public BaseEntity {
    public:
     explicit Index(QObject* parent = nullptr);
     explicit Index(const QVector<VersionList::Ptr>& lists, QObject* parent = nullptr);
+    virtual ~Index() = default;
 
     enum { UidRole = Qt::UserRole, NameRole, ListPtrRole };
 
@@ -47,8 +48,15 @@ class Index : public QAbstractListModel, public BaseEntity {
 
     QVector<VersionList::Ptr> lists() const { return m_lists; }
 
+    Task::Ptr loadVersion(const QString& uid, const QString& version = {}, Net::Mode mode = Net::Mode::Online, bool force = false);
+
+    // this blocks until the version is loaded
+    Version::Ptr getLoadedVersion(const QString& uid, const QString& version);
+
    public:  // for usage by parsers only
     void merge(const std::shared_ptr<Index>& other);
+
+   protected:
     void parse(const QJsonObject& obj) override;
 
    private:

launcher/meta/JsonFormat.cpp

@@ -41,6 +41,7 @@ static std::shared_ptr<Index> parseIndexInternal(const QJsonObject& obj)
     std::transform(objects.begin(), objects.end(), std::back_inserter(lists), [](const QJsonObject& obj) {
         VersionList::Ptr list = std::make_shared<VersionList>(requireString(obj, "uid"));
         list->setName(ensureString(obj, "name", QString()));
+        list->setSha256(ensureString(obj, "sha256", QString()));
         return list;
     });
     return std::make_shared<Index>(lists);
@@ -58,6 +59,9 @@ static Version::Ptr parseCommonVersion(const QString& uid, const QJsonObject& ob
     parseRequires(obj, &reqs, "requires");
     parseRequires(obj, &conflicts, "conflicts");
     version->setRequires(reqs, conflicts);
+    if (auto sha256 = ensureString(obj, "sha256", QString()); !sha256.isEmpty()) {
+        version->setSha256(sha256);
+    }
     return version;
 }
 

launcher/meta/JsonFormat.h

@@ -16,11 +16,9 @@
 #pragma once
 
 #include <QJsonObject>
-#include <memory>
 
 #include <set>
 #include "Exception.h"
-#include "meta/BaseEntity.h"
 
 namespace Meta {
 class Index;

launcher/meta/Version.cpp

@@ -18,12 +18,9 @@
 #include <QDateTime>
 
 #include "JsonFormat.h"
-#include "minecraft/PackProfile.h"
 
 Meta::Version::Version(const QString& uid, const QString& version) : BaseVersion(), m_uid(uid), m_version(version) {}
 
-Meta::Version::~Version() {}
-
 QString Meta::Version::descriptor()
 {
     return m_version;
@@ -71,6 +68,9 @@ void Meta::Version::mergeFromList(const Meta::Version::Ptr& other)
     if (m_volatile != other->m_volatile) {
         setVolatile(other->m_volatile);
     }
+    if (!other->m_sha256.isEmpty()) {
+        m_sha256 = other->m_sha256;
+    }
 }
 
 void Meta::Version::merge(const Version::Ptr& other)

launcher/meta/Version.h

@@ -38,7 +38,7 @@ class Version : public QObject, public BaseVersion, public BaseEntity {
     using Ptr = std::shared_ptr<Version>;
 
     explicit Version(const QString& uid, const QString& version);
-    virtual ~Version();
+    virtual ~Version() = default;
 
     QString descriptor() override;
     QString name() override;
@@ -52,7 +52,7 @@ class Version : public QObject, public BaseVersion, public BaseEntity {
     const Meta::RequireSet& requiredSet() const { return m_requires; }
     VersionFilePtr data() const { return m_data; }
     bool isRecommended() const { return m_recommended; }
-    bool isLoaded() const { return m_data != nullptr; }
+    bool isLoaded() const { return m_data != nullptr && BaseEntity::isLoaded(); }
 
     void merge(const Version::Ptr& other);
     void mergeFromList(const Version::Ptr& other);

launcher/meta/VersionList.cpp

@@ -17,8 +17,13 @@
 
 #include <QDateTime>
 
+#include "Application.h"
+#include "Index.h"
 #include "JsonFormat.h"
 #include "Version.h"
+#include "meta/BaseEntity.h"
+#include "net/Mode.h"
+#include "tasks/SequentialTask.h"
 
 namespace Meta {
 VersionList::VersionList(const QString& uid, QObject* parent) : BaseVersionList(parent), m_uid(uid)
@@ -28,8 +33,11 @@ VersionList::VersionList(const QString& uid, QObject* parent) : BaseVersionList(
 
 Task::Ptr VersionList::getLoadTask()
 {
-    load(Net::Mode::Online);
+    auto loadTask =
-    return getCurrentTask();
+        makeShared<SequentialTask>(this, tr("Load meta for %1", "This is for the task name that loads the meta index.").arg(m_uid));
+    loadTask->addTask(APPLICATION->metadataIndex()->loadTask(Net::Mode::Online));
+    loadTask->addTask(this->loadTask(Net::Mode::Online));
+    return loadTask;
 }
 
 bool VersionList::isLoaded()
@@ -92,6 +100,13 @@ QVariant VersionList::data(const QModelIndex& index, int role) const
             return QVariant::fromValue(version);
         case RecommendedRole:
             return version->isRecommended();
+        case JavaMajorRole: {
+            auto major = version->version();
+            if (major.startsWith("java")) {
+                major = "Java " + major.mid(4);
+            }
+            return major;
+        }
         // FIXME: this should be determined in whatever view/proxy is used...
         // case LatestRole: return version == getLatestStable();
         default:
@@ -101,10 +116,14 @@ QVariant VersionList::data(const QModelIndex& index, int role) const
 
 BaseVersionList::RoleList VersionList::providesRoles() const
 {
-    return { VersionPointerRole, VersionRole,  VersionIdRole, ParentVersionRole, TypeRole,   UidRole,
+    return m_provided_roles;
-             TimeRole,           RequiresRole, SortRole,      RecommendedRole,   LatestRole, VersionPtrRole };
 }
 
+void VersionList::setProvidedRoles(RoleList roles)
+{
+    m_provided_roles = roles;
+};
+
 QHash<int, QByteArray> VersionList::roleNames() const
 {
     QHash<int, QByteArray> roles = BaseVersionList::roleNames();
@@ -131,6 +150,8 @@ Version::Ptr VersionList::getVersion(const QString& version)
     if (!out) {
         out = std::make_shared<Version>(m_uid, version);
         m_lookup[version] = out;
+        setupAddedVersion(m_versions.size(), out);
+        m_versions.append(out);
     }
     return out;
 }
@@ -191,6 +212,9 @@ void VersionList::mergeFromIndex(const VersionList::Ptr& other)
     if (m_name != other->m_name) {
         setName(other->m_name);
     }
+    if (!other->m_sha256.isEmpty()) {
+        m_sha256 = other->m_sha256;
+    }
 }
 
 void VersionList::merge(const VersionList::Ptr& other)
@@ -198,23 +222,27 @@ void VersionList::merge(const VersionList::Ptr& other)
     if (m_name != other->m_name) {
         setName(other->m_name);
     }
+    if (!other->m_sha256.isEmpty()) {
+        m_sha256 = other->m_sha256;
+    }
 
     // TODO: do not reset the whole model. maybe?
     beginResetModel();
-    m_versions.clear();
     if (other->m_versions.isEmpty()) {
         qWarning() << "Empty list loaded ...";
     }
-    for (const Version::Ptr& version : other->m_versions) {
+    for (auto version : other->m_versions) {
         // we already have the version. merge the contents
         if (m_lookup.contains(version->version())) {
-            m_lookup.value(version->version())->mergeFromList(version);
+            auto existing = m_lookup.value(version->version());
+            existing->mergeFromList(version);
+            version = existing;
         } else {
-            m_lookup.insert(version->uid(), version);
+            m_lookup.insert(version->version(), version);
-        }
             // connect it.
             setupAddedVersion(m_versions.size(), version);
             m_versions.append(version);
+        }
         m_recommended = getBetterVersion(m_recommended, version);
     }
     endResetModel();
@@ -222,14 +250,15 @@ void VersionList::merge(const VersionList::Ptr& other)
 
 void VersionList::setupAddedVersion(const int row, const Version::Ptr& version)
 {
-    // FIXME: do not disconnect from everythin, disconnect only the lambdas here
+    disconnect(version.get(), &Version::requiresChanged, this, nullptr);
-    version->disconnect();
+    disconnect(version.get(), &Version::timeChanged, this, nullptr);
+    disconnect(version.get(), &Version::typeChanged, this, nullptr);
+
     connect(version.get(), &Version::requiresChanged, this,
             [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << RequiresRole); });
     connect(version.get(), &Version::timeChanged, this,
-            [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << TimeRole << SortRole); });
+            [this, row]() { emit dataChanged(index(row), index(row), { TimeRole, SortRole }); });
-    connect(version.get(), &Version::typeChanged, this,
+    connect(version.get(), &Version::typeChanged, this, [this, row]() { emit dataChanged(index(row), index(row), { TypeRole }); });
-            [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << TypeRole); });
 }
 
 BaseVersion::Ptr VersionList::getRecommended() const
@@ -237,4 +266,14 @@ BaseVersion::Ptr VersionList::getRecommended() const
     return m_recommended;
 }
 
+void VersionList::waitToLoad()
+{
+    if (isLoaded())
+        return;
+    QEventLoop ev;
+    auto task = getLoadTask();
+    QObject::connect(task.get(), &Task::finished, &ev, &QEventLoop::quit);
+    task->start();
+    ev.exec();
+}
 }  // namespace Meta

launcher/meta/VersionList.h

@@ -30,13 +30,14 @@ class VersionList : public BaseVersionList, public BaseEntity {
     Q_PROPERTY(QString name READ name NOTIFY nameChanged)
    public:
     explicit VersionList(const QString& uid, QObject* parent = nullptr);
+    virtual ~VersionList() = default;
 
     using Ptr = std::shared_ptr<VersionList>;
 
     enum Roles { UidRole = Qt::UserRole + 100, TimeRole, RequiresRole, VersionPtrRole };
 
-    Task::Ptr getLoadTask() override;
     bool isLoaded() override;
+    [[nodiscard]] Task::Ptr getLoadTask() override;
     const BaseVersion::Ptr at(int i) const override;
     int count() const override;
     void sortVersions() override;
@@ -47,6 +48,8 @@ class VersionList : public BaseVersionList, public BaseEntity {
     RoleList providesRoles() const override;
     QHash<int, QByteArray> roleNames() const override;
 
+    void setProvidedRoles(RoleList roles);
+
     QString localFilename() const override;
 
     QString uid() const { return m_uid; }
@@ -58,6 +61,9 @@ class VersionList : public BaseVersionList, public BaseEntity {
 
     QVector<Version::Ptr> versions() const { return m_versions; }
 
+    // this blocks until the version list is loaded
+    void waitToLoad();
+
    public:  // for usage only by parsers
     void setName(const QString& name);
     void setVersions(const QVector<Version::Ptr>& versions);
@@ -79,6 +85,9 @@ class VersionList : public BaseVersionList, public BaseEntity {
 
     Version::Ptr m_recommended;
 
+    RoleList m_provided_roles = { VersionPointerRole, VersionRole,  VersionIdRole, ParentVersionRole, TypeRole,   UidRole,
+                                  TimeRole,           RequiresRole, SortRole,      RecommendedRole,   LatestRole, VersionPtrRole };
+
     void setupAddedVersion(int row, const Version::Ptr& version);
 };
 }  // namespace Meta

launcher/minecraft/AssetsUtils.cpp

@@ -283,8 +283,7 @@ Net::NetRequest::Ptr AssetObject::getDownloadAction()
     if ((!objectFile.isFile()) || (objectFile.size() != size)) {
         auto objectDL = Net::ApiDownload::makeFile(getUrl(), objectFile.filePath());
         if (hash.size()) {
-            auto rawHash = QByteArray::fromHex(hash.toLatin1());
+            objectDL->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, hash));
-            objectDL->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, rawHash));
         }
         objectDL->setProgress(objectDL->getProgress(), size);
         return objectDL;

launcher/minecraft/Component.cpp

@@ -56,18 +56,6 @@ Component::Component(PackProfile* parent, const QString& uid)
     m_uid = uid;
 }
 
-Component::Component(PackProfile* parent, std::shared_ptr<Meta::Version> version)
-{
-    assert(parent);
-    m_parent = parent;
-
-    m_metaVersion = version;
-    m_uid = version->uid();
-    m_version = m_cachedVersion = version->version();
-    m_cachedName = version->name();
-    m_loaded = version->isLoaded();
-}
-
 Component::Component(PackProfile* parent, const QString& uid, std::shared_ptr<VersionFile> file)
 {
     assert(parent);
@@ -102,9 +90,6 @@ void Component::applyTo(LaunchProfile* profile)
 std::shared_ptr<class VersionFile> Component::getVersionFile() const
 {
     if (m_metaVersion) {
-        if (!m_metaVersion->isLoaded()) {
-            m_metaVersion->load(Net::Mode::Online);
-        }
         return m_metaVersion->data();
     } else {
         return m_file;
@@ -131,29 +116,35 @@ int Component::getOrder()
     }
     return 0;
 }
+
 void Component::setOrder(int order)
 {
     m_orderOverride = true;
     m_order = order;
 }
+
 QString Component::getID()
 {
     return m_uid;
 }
+
 QString Component::getName()
 {
     if (!m_cachedName.isEmpty())
         return m_cachedName;
     return m_uid;
 }
+
 QString Component::getVersion()
 {
     return m_cachedVersion;
 }
+
 QString Component::getFilename()
 {
     return m_parent->patchFilePathForUid(m_uid);
 }
+
 QDateTime Component::getReleaseDateTime()
 {
     if (m_metaVersion) {
@@ -198,17 +189,14 @@ bool Component::isCustom()
 
 bool Component::isCustomizable()
 {
-    if (m_metaVersion) {
+    return m_metaVersion && getVersionFile();
-        if (getVersionFile()) {
-            return true;
-        }
-    }
-    return false;
 }
+
 bool Component::isRemovable()
 {
     return !m_important;
 }
+
 bool Component::isRevertible()
 {
     if (isCustom()) {
@@ -218,18 +206,18 @@ bool Component::isRevertible()
     }
     return false;
 }
+
 bool Component::isMoveable()
 {
     // HACK, FIXME: this was too dumb and wouldn't follow dependency constraints anyway. For now hardcoded to 'true'.
     return true;
 }
+
 bool Component::isVersionChangeable()
 {
     auto list = getVersionList();
     if (list) {
-        if (!list->isLoaded()) {
+        list->waitToLoad();
-            list->load(Net::Mode::Online);
-        }
         return list->count() != 0;
     }
     return false;

launcher/minecraft/Component.h

@@ -22,7 +22,6 @@ class Component : public QObject, public ProblemProvider {
     Component(PackProfile* parent, const QString& uid);
 
     // DEPRECATED: remove these constructors?
-    Component(PackProfile* parent, std::shared_ptr<Meta::Version> version);
     Component(PackProfile* parent, const QString& uid, std::shared_ptr<VersionFile> file);
 
     virtual ~Component() {}

launcher/minecraft/ComponentUpdateTask.cpp

@@ -13,6 +13,7 @@
 #include "net/Mode.h"
 
 #include "Application.h"
+#include "tasks/Task.h"
 
 /*
  * This is responsible for loading the components of a component list AND resolving dependency issues between them
@@ -93,9 +94,9 @@ static LoadResult loadComponent(ComponentPtr component, Task::Ptr& loadTask, Net
             component->m_loaded = true;
             result = LoadResult::LoadedLocal;
         } else {
-            metaVersion->load(netmode);
+            loadTask = APPLICATION->metadataIndex()->loadVersion(component->m_uid, component->m_version, netmode);
-            loadTask = metaVersion->getCurrentTask();
+            loadTask->start();
-            if (loadTask)
+            if (netmode == Net::Mode::Online)
                 result = LoadResult::RequiresRemote;
             else if (metaVersion->isLoaded())
                 result = LoadResult::LoadedLocal;
@@ -133,21 +134,6 @@ static LoadResult loadPackProfile(ComponentPtr component, Task::Ptr& loadTask, N
 }
 */
 
-static LoadResult loadIndex(Task::Ptr& loadTask, Net::Mode netmode)
-{
-    // FIXME: DECIDE. do we want to run the update task anyway?
-    if (APPLICATION->metadataIndex()->isLoaded()) {
-        qDebug() << "Index is already loaded";
-        return LoadResult::LoadedLocal;
-    }
-    APPLICATION->metadataIndex()->load(netmode);
-    loadTask = APPLICATION->metadataIndex()->getCurrentTask();
-    if (loadTask) {
-        return LoadResult::RequiresRemote;
-    }
-    // FIXME: this is assuming the load succeeded... did it really?
-    return LoadResult::LoadedLocal;
-}
 }  // namespace
 
 void ComponentUpdateTask::loadComponents()
@@ -156,23 +142,7 @@ void ComponentUpdateTask::loadComponents()
     size_t taskIndex = 0;
     size_t componentIndex = 0;
     d->remoteLoadSuccessful = true;
-    // load the main index (it is needed to determine if components can revert)
+
-    {
-        // FIXME: tear out as a method? or lambda?
-        Task::Ptr indexLoadTask;
-        auto singleResult = loadIndex(indexLoadTask, d->netmode);
-        result = composeLoadResult(result, singleResult);
-        if (indexLoadTask) {
-            qDebug() << "Remote loading is being run for metadata index";
-            RemoteLoadStatus status;
-            status.type = RemoteLoadStatus::Type::Index;
-            d->remoteLoadStatusList.append(status);
-            connect(indexLoadTask.get(), &Task::succeeded, [=]() { remoteLoadSucceeded(taskIndex); });
-            connect(indexLoadTask.get(), &Task::failed, [=](const QString& error) { remoteLoadFailed(taskIndex, error); });
-            connect(indexLoadTask.get(), &Task::aborted, [=]() { remoteLoadFailed(taskIndex, tr("Aborted")); });
-            taskIndex++;
-        }
-    }
     // load all the components OR their lists...
     for (auto component : d->m_list->d->components) {
         Task::Ptr loadTask;
@@ -206,12 +176,13 @@ void ComponentUpdateTask::loadComponents()
         result = composeLoadResult(result, singleResult);
         if (loadTask) {
             qDebug() << "Remote loading is being run for" << component->getName();
-            connect(loadTask.get(), &Task::succeeded, [=]() { remoteLoadSucceeded(taskIndex); });
+            connect(loadTask.get(), &Task::succeeded, this, [this, taskIndex]() { remoteLoadSucceeded(taskIndex); });
-            connect(loadTask.get(), &Task::failed, [=](const QString& error) { remoteLoadFailed(taskIndex, error); });
+            connect(loadTask.get(), &Task::failed, this, [this, taskIndex](const QString& error) { remoteLoadFailed(taskIndex, error); });
-            connect(loadTask.get(), &Task::aborted, [=]() { remoteLoadFailed(taskIndex, tr("Aborted")); });
+            connect(loadTask.get(), &Task::aborted, this, [this, taskIndex]() { remoteLoadFailed(taskIndex, tr("Aborted")); });
             RemoteLoadStatus status;
             status.type = loadType;
             status.PackProfileIndex = componentIndex;
+            status.task = loadTask;
             d->remoteLoadStatusList.append(status);
             taskIndex++;
         }
@@ -518,7 +489,14 @@ void ComponentUpdateTask::resolveDependencies(bool checkOnly)
 
 void ComponentUpdateTask::remoteLoadSucceeded(size_t taskIndex)
 {
+    if (static_cast<size_t>(d->remoteLoadStatusList.size()) < taskIndex) {
+        qWarning() << "Got task index outside of results" << taskIndex;
+        return;
+    }
     auto& taskSlot = d->remoteLoadStatusList[taskIndex];
+    disconnect(taskSlot.task.get(), &Task::succeeded, this, nullptr);
+    disconnect(taskSlot.task.get(), &Task::failed, this, nullptr);
+    disconnect(taskSlot.task.get(), &Task::aborted, this, nullptr);
     if (taskSlot.finished) {
         qWarning() << "Got multiple results from remote load task" << taskIndex;
         return;
@@ -538,7 +516,14 @@ void ComponentUpdateTask::remoteLoadSucceeded(size_t taskIndex)
 
 void ComponentUpdateTask::remoteLoadFailed(size_t taskIndex, const QString& msg)
 {
+    if (static_cast<size_t>(d->remoteLoadStatusList.size()) < taskIndex) {
+        qWarning() << "Got task index outside of results" << taskIndex;
+        return;
+    }
     auto& taskSlot = d->remoteLoadStatusList[taskIndex];
+    disconnect(taskSlot.task.get(), &Task::succeeded, this, nullptr);
+    disconnect(taskSlot.task.get(), &Task::failed, this, nullptr);
+    disconnect(taskSlot.task.get(), &Task::aborted, this, nullptr);
     if (taskSlot.finished) {
         qWarning() << "Got multiple results from remote load task" << taskIndex;
         return;

launcher/minecraft/ComponentUpdateTask_p.h

@@ -4,6 +4,7 @@
 #include <QString>
 #include <cstddef>
 #include "net/Mode.h"
+#include "tasks/Task.h"
 
 class PackProfile;
 
@@ -13,6 +14,7 @@ struct RemoteLoadStatus {
     bool finished = false;
     bool succeeded = false;
     QString error;
+    Task::Ptr task;
 };
 
 struct ComponentUpdateTaskData {

launcher/minecraft/LaunchProfile.cpp

@@ -164,6 +164,11 @@ void LaunchProfile::applyCompatibleJavaMajors(QList<int>& javaMajor)
 {
     m_compatibleJavaMajors.append(javaMajor);
 }
+void LaunchProfile::applyCompatibleJavaName(QString javaName)
+{
+    if (!javaName.isEmpty())
+        m_compatibleJavaName = javaName;
+}
 
 void LaunchProfile::applyLibrary(LibraryPtr library, const RuntimeContext& runtimeContext)
 {
@@ -334,6 +339,11 @@ const QList<int>& LaunchProfile::getCompatibleJavaMajors() const
     return m_compatibleJavaMajors;
 }
 
+const QString LaunchProfile::getCompatibleJavaName() const
+{
+    return m_compatibleJavaName;
+}
+
 void LaunchProfile::getLibraryFiles(const RuntimeContext& runtimeContext,
                                     QStringList& jars,
                                     QStringList& nativeJars,

launcher/minecraft/LaunchProfile.h

@@ -59,6 +59,7 @@ class LaunchProfile : public ProblemProvider {
     void applyMavenFile(LibraryPtr library, const RuntimeContext& runtimeContext);
     void applyAgent(AgentPtr agent, const RuntimeContext& runtimeContext);
     void applyCompatibleJavaMajors(QList<int>& javaMajor);
+    void applyCompatibleJavaName(QString javaName);
     void applyMainJar(LibraryPtr jar);
     void applyProblemSeverity(ProblemSeverity severity);
     /// clear the profile
@@ -80,6 +81,7 @@ class LaunchProfile : public ProblemProvider {
     const QList<LibraryPtr>& getMavenFiles() const;
     const QList<AgentPtr>& getAgents() const;
     const QList<int>& getCompatibleJavaMajors() const;
+    const QString getCompatibleJavaName() const;
     const LibraryPtr getMainJar() const;
     void getLibraryFiles(const RuntimeContext& runtimeContext,
                          QStringList& jars,
@@ -150,5 +152,7 @@ class LaunchProfile : public ProblemProvider {
     /// compatible java major versions
     QList<int> m_compatibleJavaMajors;
 
+    QString m_compatibleJavaName;
+
     ProblemSeverity m_problemSeverity = ProblemSeverity::None;
 };

launcher/minecraft/Library.cpp

@@ -147,9 +147,8 @@ QList<Net::NetRequest::Ptr> Library::getDownloads(const RuntimeContext& runtimeC
         options |= Net::Download::Option::MakeEternal;
 
         if (sha1.size()) {
-            auto rawSha1 = QByteArray::fromHex(sha1.toLatin1());
             auto dl = Net::ApiDownload::makeCached(url, entry, options);
-            dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, rawSha1));
+            dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, sha1));
             qDebug() << "Checksummed Download for:" << rawName().serialize() << "storage:" << storage << "url:" << url;
             out.append(dl);
         } else {

launcher/minecraft/MinecraftInstance.cpp

@@ -38,6 +38,8 @@
 #include "MinecraftInstance.h"
 #include "Application.h"
 #include "BuildConfig.h"
+#include "QObjectPtr.h"
+#include "minecraft/launch/AutoInstallJava.h"
 #include "minecraft/launch/CreateGameFolders.h"
 #include "minecraft/launch/ExtractNatives.h"
 #include "minecraft/launch/PrintInstanceInfo.h"
@@ -134,25 +136,21 @@ void MinecraftInstance::loadSpecificSettings()
         return;
 
     // Java Settings
-    auto javaOverride = m_settings->registerSetting("OverrideJava", false);
     auto locationOverride = m_settings->registerSetting("OverrideJavaLocation", false);
     auto argsOverride = m_settings->registerSetting("OverrideJavaArgs", false);
-
+    m_settings->registerSetting("AutomaticJava", false);
-    // combinations
-    auto javaOrLocation = std::make_shared<OrSetting>("JavaOrLocationOverride", javaOverride, locationOverride);
-    auto javaOrArgs = std::make_shared<OrSetting>("JavaOrArgsOverride", javaOverride, argsOverride);
 
     if (auto global_settings = globalSettings()) {
-        m_settings->registerOverride(global_settings->getSetting("JavaPath"), javaOrLocation);
+        m_settings->registerOverride(global_settings->getSetting("JavaPath"), locationOverride);
-        m_settings->registerOverride(global_settings->getSetting("JvmArgs"), javaOrArgs);
+        m_settings->registerOverride(global_settings->getSetting("JvmArgs"), argsOverride);
-        m_settings->registerOverride(global_settings->getSetting("IgnoreJavaCompatibility"), javaOrLocation);
+        m_settings->registerOverride(global_settings->getSetting("IgnoreJavaCompatibility"), locationOverride);
 
         // special!
-        m_settings->registerPassthrough(global_settings->getSetting("JavaSignature"), javaOrLocation);
+        m_settings->registerPassthrough(global_settings->getSetting("JavaSignature"), locationOverride);
-        m_settings->registerPassthrough(global_settings->getSetting("JavaArchitecture"), javaOrLocation);
+        m_settings->registerPassthrough(global_settings->getSetting("JavaArchitecture"), locationOverride);
-        m_settings->registerPassthrough(global_settings->getSetting("JavaRealArchitecture"), javaOrLocation);
+        m_settings->registerPassthrough(global_settings->getSetting("JavaRealArchitecture"), locationOverride);
-        m_settings->registerPassthrough(global_settings->getSetting("JavaVersion"), javaOrLocation);
+        m_settings->registerPassthrough(global_settings->getSetting("JavaVersion"), locationOverride);
-        m_settings->registerPassthrough(global_settings->getSetting("JavaVendor"), javaOrLocation);
+        m_settings->registerPassthrough(global_settings->getSetting("JavaVendor"), locationOverride);
 
         // Window Size
         auto windowSetting = m_settings->registerSetting("OverrideWindow", false);
@@ -196,8 +194,9 @@ void MinecraftInstance::loadSpecificSettings()
     }
 
     // Join server on launch, this does not have a global override
-    m_settings->registerSetting("JoinServerOnLaunch", false);
+    m_settings->registerSetting({ "JoinServerOnLaunch", "JoinOnLaunch" }, false);
     m_settings->registerSetting("JoinServerOnLaunchAddress", "");
+    m_settings->registerSetting("JoinWorldOnLaunch", "");
 
     // Use account for instance, this does not have a global override
     m_settings->registerSetting("UseAccountForInstance", false);
@@ -523,8 +522,7 @@ QStringList MinecraftInstance::javaArguments()
 
     if (javaVersion.isModular() && shouldApplyOnlineFixes())
         // allow reflective access to java.net - required by the skin fix
-        args << "--add-opens"
+        args << "--add-opens" << "java.base/java.net=ALL-UNNAMED";
-             << "java.base/java.net=ALL-UNNAMED";
 
     return args;
 }
@@ -608,7 +606,7 @@ QProcessEnvironment MinecraftInstance::createLaunchEnvironment()
             // dlsym variant is only needed for OpenGL and not included in the vulkan layer
             appendLib("libMangoHud_dlsym.so");
             appendLib("libMangoHud_opengl.so");
-            appendLib(mangoHudLib.fileName());
+            preloadList << mangoHudLibString;
         }
 
         env.insert("LD_PRELOAD", preloadList.join(QLatin1String(":")));
@@ -656,7 +654,7 @@ static QString replaceTokensIn(QString text, QMap<QString, QString> with)
     return result;
 }
 
-QStringList MinecraftInstance::processMinecraftArgs(AuthSessionPtr session, MinecraftServerTargetPtr serverToJoin) const
+QStringList MinecraftInstance::processMinecraftArgs(AuthSessionPtr session, MinecraftTarget::Ptr targetToJoin) const
 {
     auto profile = m_components->getProfile();
     QString args_pattern = profile->getMinecraftArguments();
@@ -664,12 +662,16 @@ QStringList MinecraftInstance::processMinecraftArgs(AuthSessionPtr session, Mine
         args_pattern += " --tweakClass " + tweaker;
     }
 
-    if (serverToJoin && !serverToJoin->address.isEmpty()) {
+    if (targetToJoin) {
+        if (!targetToJoin->address.isEmpty()) {
             if (profile->hasTrait("feature:is_quick_play_multiplayer")) {
-            args_pattern += " --quickPlayMultiplayer " + serverToJoin->address + ':' + QString::number(serverToJoin->port);
+                args_pattern += " --quickPlayMultiplayer " + targetToJoin->address + ':' + QString::number(targetToJoin->port);
             } else {
-            args_pattern += " --server " + serverToJoin->address;
+                args_pattern += " --server " + targetToJoin->address;
-            args_pattern += " --port " + QString::number(serverToJoin->port);
+                args_pattern += " --port " + QString::number(targetToJoin->port);
+            }
+        } else if (!targetToJoin->world.isEmpty() && profile->hasTrait("feature:is_quick_play_singleplayer")) {
+            args_pattern += " --quickPlaySingleplayer " + targetToJoin->world;
         }
     }
 
@@ -713,7 +715,7 @@ QStringList MinecraftInstance::processMinecraftArgs(AuthSessionPtr session, Mine
     return parts;
 }
 
-QString MinecraftInstance::createLaunchScript(AuthSessionPtr session, MinecraftServerTargetPtr serverToJoin)
+QString MinecraftInstance::createLaunchScript(AuthSessionPtr session, MinecraftTarget::Ptr targetToJoin)
 {
     QString launchScript;
 
@@ -732,9 +734,13 @@ QString MinecraftInstance::createLaunchScript(AuthSessionPtr session, MinecraftS
         launchScript += "appletClass " + appletClass + "\n";
     }
 
-    if (serverToJoin && !serverToJoin->address.isEmpty()) {
+    if (targetToJoin) {
-        launchScript += "serverAddress " + serverToJoin->address + "\n";
+        if (!targetToJoin->address.isEmpty()) {
-        launchScript += "serverPort " + QString::number(serverToJoin->port) + "\n";
+            launchScript += "serverAddress " + targetToJoin->address + "\n";
+            launchScript += "serverPort " + QString::number(targetToJoin->port) + "\n";
+        } else if (!targetToJoin->world.isEmpty()) {
+            launchScript += "worldName " + targetToJoin->world + "\n";
+        }
     }
 
     // generic minecraft params
@@ -787,16 +793,15 @@ QString MinecraftInstance::createLaunchScript(AuthSessionPtr session, MinecraftS
     return launchScript;
 }
 
-QStringList MinecraftInstance::verboseDescription(AuthSessionPtr session, MinecraftServerTargetPtr serverToJoin)
+QStringList MinecraftInstance::verboseDescription(AuthSessionPtr session, MinecraftTarget::Ptr targetToJoin)
 {
     QStringList out;
-    out << "Main Class:"
+    out << "Main Class:" << "  " + getMainClass() << "";
-        << "  " + getMainClass() << "";
+    out << "Native path:" << "  " + getNativePath() << "";
-    out << "Native path:"
-        << "  " + getNativePath() << "";
 
     auto profile = m_components->getProfile();
 
+    // traits
     auto alltraits = traits();
     if (alltraits.size()) {
         out << "Traits:";
@@ -806,6 +811,7 @@ QStringList MinecraftInstance::verboseDescription(AuthSessionPtr session, Minecr
         out << "";
     }
 
+    // native libraries
     auto settings = this->settings();
     bool nativeOpenAL = settings->get("UseNativeOpenAL").toBool();
     bool nativeGLFW = settings->get("UseNativeGLFW").toBool();
@@ -841,6 +847,7 @@ QStringList MinecraftInstance::verboseDescription(AuthSessionPtr session, Minecr
         out << "";
     }
 
+    // mods and core mods
     auto printModList = [&](const QString& label, ModFolderModel& model) {
         if (model.size()) {
             out << QString("%1:").arg(label);
@@ -869,6 +876,7 @@ QStringList MinecraftInstance::verboseDescription(AuthSessionPtr session, Minecr
     printModList("Mods", *(loaderModList().get()));
     printModList("Core Mods", *(coreModList().get()));
 
+    // jar mods
     auto& jarMods = profile->getJarMods();
     if (jarMods.size()) {
         out << "Jar Mods:";
@@ -884,11 +892,13 @@ QStringList MinecraftInstance::verboseDescription(AuthSessionPtr session, Minecr
         out << "";
     }
 
-    auto params = processMinecraftArgs(nullptr, serverToJoin);
+    // minecraft arguments
+    auto params = processMinecraftArgs(nullptr, targetToJoin);
     out << "Params:";
     out << "  " + params.join(' ');
     out << "";
 
+    // window size
     QString windowParams;
     if (settings->get("LaunchMaximized").toBool()) {
         out << "Window size: max (if available)";
@@ -1034,7 +1044,7 @@ Task::Ptr MinecraftInstance::createUpdateTask(Net::Mode mode)
     return nullptr;
 }
 
-shared_qobject_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPtr session, MinecraftServerTargetPtr serverToJoin)
+shared_qobject_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPtr session, MinecraftTarget::Ptr targetToJoin)
 {
     updateRuntimeContext();
     // FIXME: get rid of shared_from_this ...
@@ -1048,26 +1058,28 @@ shared_qobject_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPt
         process->appendStep(makeShared<TextPrint>(pptr, "Minecraft folder is:\n" + gameRoot() + "\n\n", MessageLevel::Launcher));
     }
 
-    // check java
-    {
-        process->appendStep(makeShared<CheckJava>(pptr));
-    }
-
     // create the .minecraft folder and server-resource-packs (workaround for Minecraft bug MCL-3732)
     {
         process->appendStep(makeShared<CreateGameFolders>(pptr));
     }
 
-    if (!serverToJoin && settings()->get("JoinServerOnLaunch").toBool()) {
+    if (!targetToJoin && settings()->get("JoinOnLaunch").toBool()) {
         QString fullAddress = settings()->get("JoinServerOnLaunchAddress").toString();
-        serverToJoin.reset(new MinecraftServerTarget(MinecraftServerTarget::parse(fullAddress)));
+        if (!fullAddress.isEmpty()) {
+            targetToJoin.reset(new MinecraftTarget(MinecraftTarget::parse(fullAddress, false)));
+        } else {
+            QString world = settings()->get("JoinWorldOnLaunch").toString();
+            if (!world.isEmpty()) {
+                targetToJoin.reset(new MinecraftTarget(MinecraftTarget::parse(world, true)));
+            }
+        }
     }
 
-    if (serverToJoin && serverToJoin->port == 25565) {
+    if (targetToJoin && targetToJoin->port == 25565) {
         // Resolve server address to join on launch
         auto step = makeShared<LookupServerAddress>(pptr);
-        step->setLookupAddress(serverToJoin->address);
+        step->setLookupAddress(targetToJoin->address);
-        step->setOutputAddressPtr(serverToJoin);
+        step->setOutputAddressPtr(targetToJoin);
         process->appendStep(step);
     }
 
@@ -1088,6 +1100,12 @@ shared_qobject_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPt
         process->appendStep(makeShared<Update>(pptr, Net::Mode::Offline));
     }
 
+    // check java
+    {
+        process->appendStep(makeShared<AutoInstallJava>(pptr));
+        process->appendStep(makeShared<CheckJava>(pptr));
+    }
+
     // if there are any jar mods
     {
         process->appendStep(makeShared<ModMinecraftJar>(pptr));
@@ -1100,7 +1118,7 @@ shared_qobject_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPt
 
     // print some instance info here...
     {
-        process->appendStep(makeShared<PrintInstanceInfo>(pptr, session, serverToJoin));
+        process->appendStep(makeShared<PrintInstanceInfo>(pptr, session, targetToJoin));
     }
 
     // extract native jars if needed
@@ -1123,7 +1141,7 @@ shared_qobject_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPt
         auto step = makeShared<LauncherPartLaunch>(pptr);
         step->setWorkingDirectory(gameRoot());
         step->setAuthSession(session);
-        step->setServerToJoin(serverToJoin);
+        step->setTargetToJoin(targetToJoin);
         process->appendStep(step);
     }
 

launcher/minecraft/MinecraftInstance.h

@@ -39,7 +39,7 @@
 #include <QDir>
 #include <QProcess>
 #include "BaseInstance.h"
-#include "minecraft/launch/MinecraftServerTarget.h"
+#include "minecraft/launch/MinecraftTarget.h"
 #include "minecraft/mod/Mod.h"
 
 class ModFolderModel;
@@ -56,7 +56,7 @@ class MinecraftInstance : public BaseInstance {
     Q_OBJECT
    public:
     MinecraftInstance(SettingsObjectPtr globalSettings, SettingsObjectPtr settings, const QString& rootDir);
-    virtual ~MinecraftInstance() {};
+    virtual ~MinecraftInstance() = default;
     virtual void saveNow() override;
 
     void loadSpecificSettings() override;
@@ -121,11 +121,11 @@ class MinecraftInstance : public BaseInstance {
 
     //////  Launch stuff //////
     Task::Ptr createUpdateTask(Net::Mode mode) override;
-    shared_qobject_ptr<LaunchTask> createLaunchTask(AuthSessionPtr account, MinecraftServerTargetPtr serverToJoin) override;
+    shared_qobject_ptr<LaunchTask> createLaunchTask(AuthSessionPtr account, MinecraftTarget::Ptr targetToJoin) override;
     QStringList extraArguments() override;
-    QStringList verboseDescription(AuthSessionPtr session, MinecraftServerTargetPtr serverToJoin) override;
+    QStringList verboseDescription(AuthSessionPtr session, MinecraftTarget::Ptr targetToJoin) override;
     QList<Mod*> getJarMods() const;
-    QString createLaunchScript(AuthSessionPtr session, MinecraftServerTargetPtr serverToJoin);
+    QString createLaunchScript(AuthSessionPtr session, MinecraftTarget::Ptr targetToJoin);
     /// get arguments passed to java
     QStringList javaArguments();
     QString getLauncher();
@@ -155,7 +155,7 @@ class MinecraftInstance : public BaseInstance {
     virtual QString getMainClass() const;
 
     // FIXME: remove
-    virtual QStringList processMinecraftArgs(AuthSessionPtr account, MinecraftServerTargetPtr serverToJoin) const;
+    virtual QStringList processMinecraftArgs(AuthSessionPtr account, MinecraftTarget::Ptr targetToJoin) const;
 
     virtual JavaVersion getJavaVersion();
 

launcher/minecraft/MinecraftUpdate.cpp

@@ -16,32 +16,22 @@
 #include "MinecraftUpdate.h"
 #include "MinecraftInstance.h"
 
-#include <QDataStream>
-#include <QFile>
-#include <QFileInfo>
-#include <QTextStream>
-
-#include <FileSystem.h>
-#include "BaseInstance.h"
-#include "minecraft/Library.h"
 #include "minecraft/PackProfile.h"
 
+#include "tasks/SequentialTask.h"
 #include "update/AssetUpdateTask.h"
 #include "update/FMLLibrariesTask.h"
 #include "update/FoldersTask.h"
 #include "update/LibrariesTask.h"
 
-#include <meta/Index.h>
+MinecraftUpdate::MinecraftUpdate(MinecraftInstance* inst, QObject* parent) : SequentialTask(parent), m_inst(inst) {}
-#include <meta/Version.h>
-
-MinecraftUpdate::MinecraftUpdate(MinecraftInstance* inst, QObject* parent) : Task(parent), m_inst(inst) {}
 
 void MinecraftUpdate::executeTask()
 {
-    m_tasks.clear();
+    m_queue.clear();
     // create folders
     {
-        m_tasks.append(makeShared<FoldersTask>(m_inst));
+        addTask(makeShared<FoldersTask>(m_inst));
     }
 
     // add metadata update task if necessary
@@ -50,121 +40,24 @@ void MinecraftUpdate::executeTask()
         components->reload(Net::Mode::Online);
         auto task = components->getCurrentTask();
         if (task) {
-            m_tasks.append(task);
+            addTask(task);
         }
     }
 
     // libraries download
     {
-        m_tasks.append(makeShared<LibrariesTask>(m_inst));
+        addTask(makeShared<LibrariesTask>(m_inst));
     }
 
     // FML libraries download and copy into the instance
     {
-        m_tasks.append(makeShared<FMLLibrariesTask>(m_inst));
+        addTask(makeShared<FMLLibrariesTask>(m_inst));
     }
 
     // assets update
     {
-        m_tasks.append(makeShared<AssetUpdateTask>(m_inst));
+        addTask(makeShared<AssetUpdateTask>(m_inst));
     }
 
-    if (!m_preFailure.isEmpty()) {
+    SequentialTask::executeTask();
-        emitFailed(m_preFailure);
-        return;
-    }
-    next();
-}
-
-void MinecraftUpdate::next()
-{
-    if (m_abort) {
-        emitFailed(tr("Aborted by user."));
-        return;
-    }
-    if (m_failed_out_of_order) {
-        emitFailed(m_fail_reason);
-        return;
-    }
-    m_currentTask++;
-    if (m_currentTask > 0) {
-        auto task = m_tasks[m_currentTask - 1];
-        disconnect(task.get(), &Task::succeeded, this, &MinecraftUpdate::subtaskSucceeded);
-        disconnect(task.get(), &Task::failed, this, &MinecraftUpdate::subtaskFailed);
-        disconnect(task.get(), &Task::aborted, this, &Task::abort);
-        disconnect(task.get(), &Task::progress, this, &MinecraftUpdate::progress);
-        disconnect(task.get(), &Task::stepProgress, this, &MinecraftUpdate::propagateStepProgress);
-        disconnect(task.get(), &Task::status, this, &MinecraftUpdate::setStatus);
-        disconnect(task.get(), &Task::details, this, &MinecraftUpdate::setDetails);
-    }
-    if (m_currentTask == m_tasks.size()) {
-        emitSucceeded();
-        return;
-    }
-    auto task = m_tasks[m_currentTask];
-    // if the task is already finished by the time we look at it, skip it
-    if (task->isFinished()) {
-        qCritical() << "MinecraftUpdate: Skipping finished subtask" << m_currentTask << ":" << task.get();
-        next();
-    }
-    connect(task.get(), &Task::succeeded, this, &MinecraftUpdate::subtaskSucceeded);
-    connect(task.get(), &Task::failed, this, &MinecraftUpdate::subtaskFailed);
-    connect(task.get(), &Task::aborted, this, &Task::abort);
-    connect(task.get(), &Task::progress, this, &MinecraftUpdate::progress);
-    connect(task.get(), &Task::stepProgress, this, &MinecraftUpdate::propagateStepProgress);
-    connect(task.get(), &Task::status, this, &MinecraftUpdate::setStatus);
-    connect(task.get(), &Task::details, this, &MinecraftUpdate::setDetails);
-    // if the task is already running, do not start it again
-    if (!task->isRunning()) {
-        task->start();
-    }
-}
-
-void MinecraftUpdate::subtaskSucceeded()
-{
-    if (isFinished()) {
-        qCritical() << "MinecraftUpdate: Subtask" << sender() << "succeeded, but work was already done!";
-        return;
-    }
-    auto senderTask = QObject::sender();
-    auto currentTask = m_tasks[m_currentTask].get();
-    if (senderTask != currentTask) {
-        qDebug() << "MinecraftUpdate: Subtask" << sender() << "succeeded out of order.";
-        return;
-    }
-    next();
-}
-
-void MinecraftUpdate::subtaskFailed(QString error)
-{
-    if (isFinished()) {
-        qCritical() << "MinecraftUpdate: Subtask" << sender() << "failed, but work was already done!";
-        return;
-    }
-    auto senderTask = QObject::sender();
-    auto currentTask = m_tasks[m_currentTask].get();
-    if (senderTask != currentTask) {
-        qDebug() << "MinecraftUpdate: Subtask" << sender() << "failed out of order.";
-        m_failed_out_of_order = true;
-        m_fail_reason = error;
-        return;
-    }
-    emitFailed(error);
-}
-
-bool MinecraftUpdate::abort()
-{
-    if (!m_abort) {
-        m_abort = true;
-        auto task = m_tasks[m_currentTask];
-        if (task->canAbort()) {
-            return task->abort();
-        }
-    }
-    return true;
-}
-
-bool MinecraftUpdate::canAbort() const
-{
-    return true;
 }

launcher/minecraft/MinecraftUpdate.h

@@ -15,43 +15,19 @@
 
 #pragma once
 
-#include <QList>
+#include "tasks/SequentialTask.h"
-#include <QObject>
-#include <QUrl>
 
-#include <quazip/quazip.h>
-#include "minecraft/VersionFilterData.h"
-#include "net/NetJob.h"
-#include "tasks/Task.h"
-
-class MinecraftVersion;
 class MinecraftInstance;
 
-// FIXME: This looks very similar to a SequentialTask. Maybe we can reduce code duplications? :^)
+// this needs to be a task because components->reload does stuff that may block
-
+class MinecraftUpdate : public SequentialTask {
-class MinecraftUpdate : public Task {
     Q_OBJECT
    public:
     explicit MinecraftUpdate(MinecraftInstance* inst, QObject* parent = 0);
-    virtual ~MinecraftUpdate() {};
+    virtual ~MinecraftUpdate() = default;
 
     void executeTask() override;
-    bool canAbort() const override;
-
-   private slots:
-    bool abort() override;
-    void subtaskSucceeded();
-    void subtaskFailed(QString error);
-
-   private:
-    void next();
 
    private:
     MinecraftInstance* m_inst = nullptr;
-    QList<Task::Ptr> m_tasks;
-    QString m_preFailure;
-    int m_currentTask = -1;
-    bool m_abort = false;
-    bool m_failed_out_of_order = false;
-    QString m_fail_reason;
 };

launcher/minecraft/MojangVersionFormat.cpp

@@ -185,6 +185,9 @@ void MojangVersionFormat::readVersionProperties(const QJsonObject& in, VersionFi
             out->compatibleJavaMajors.append(requireInteger(compatible));
         }
     }
+    if (in.contains("compatibleJavaName")) {
+        out->compatibleJavaName = requireString(in.value("compatibleJavaName"));
+    }
 
     if (in.contains("downloads")) {
         auto downloadsObj = requireObject(in, "downloads");
@@ -259,6 +262,9 @@ void MojangVersionFormat::writeVersionProperties(const VersionFile* in, QJsonObj
         }
         out.insert("compatibleJavaMajors", compatibleJavaMajorsOut);
     }
+    if (!in->compatibleJavaName.isEmpty()) {
+        writeString(out, "compatibleJavaName", in->compatibleJavaName);
+    }
 }
 
 QJsonDocument MojangVersionFormat::versionFileToJson(const VersionFilePtr& patch)

launcher/minecraft/OneSixVersionFormat.cpp

@@ -36,6 +36,8 @@
 #include "OneSixVersionFormat.h"
 #include <Json.h>
 #include <minecraft/MojangVersionFormat.h>
+#include <QList>
+#include "java/JavaMetadata.h"
 #include "minecraft/Agent.h"
 #include "minecraft/ParseUtils.h"
 
@@ -255,6 +257,13 @@ VersionFilePtr OneSixVersionFormat::versionFileFromJson(const QJsonDocument& doc
         out->m_volatile = requireBoolean(root, "volatile");
     }
 
+    if (root.contains("runtimes")) {
+        out->runtimes = {};
+        for (auto runtime : ensureArray(root, "runtimes")) {
+            out->runtimes.append(Java::parseJavaMeta(ensureObject(runtime)));
+        }
+    }
+
     /* removed features that shouldn't be used */
     if (root.contains("tweakers")) {
         out->addProblem(ProblemSeverity::Error, QObject::tr("Version file contains unsupported element 'tweakers'"));

launcher/minecraft/VersionFile.cpp

@@ -73,6 +73,7 @@ void VersionFile::applyTo(LaunchProfile* profile, const RuntimeContext& runtimeC
     profile->applyMods(mods);
     profile->applyTraits(traits);
     profile->applyCompatibleJavaMajors(compatibleJavaMajors);
+    profile->applyCompatibleJavaName(compatibleJavaName);
 
     for (auto library : libraries) {
         profile->applyLibrary(library, runtimeContext);

launcher/minecraft/VersionFile.h

@@ -36,6 +36,8 @@
 #pragma once
 
 #include <QDateTime>
+#include <QHash>
+#include <QList>
 #include <QSet>
 #include <QString>
 #include <QStringList>
@@ -45,6 +47,7 @@
 #include "Agent.h"
 #include "Library.h"
 #include "ProblemProvider.h"
+#include "java/JavaMetadata.h"
 #include "minecraft/Rule.h"
 
 class PackProfile;
@@ -98,6 +101,9 @@ class VersionFile : public ProblemContainer {
     /// Mojang: list of compatible java majors
     QList<int> compatibleJavaMajors;
 
+    /// Mojang: the name of recommended java version
+    QString compatibleJavaName;
+
     /// Mojang: type of the Minecraft version
     QString type;
 
@@ -149,6 +155,8 @@ class VersionFile : public ProblemContainer {
     /// is volatile -- may be removed as soon as it is no longer needed by something else
     bool m_volatile = false;
 
+    QList<Java::MetadataPtr> runtimes;
+
    public:
     // Mojang: DEPRECATED list of 'downloads' - client jar, server jar, windows server exe, maybe more.
     QMap<QString, std::shared_ptr<MojangDownloadInfo>> mojangDownloads;

launcher/minecraft/auth/steps/MSADeviceCodeStep.cpp

@@ -74,6 +74,8 @@ void MSADeviceCodeStep::perform()
     m_task->setAskRetry(false);
     m_task->addNetAction(m_request);
 
+    connect(m_task.get(), &Task::finished, this, &MSADeviceCodeStep::deviceAutorizationFinished);
+
     m_task->start();
 }
 

launcher/minecraft/launch/AutoInstallJava.cpp

@@ -0,0 +1,242 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2021 MultiMC Contributors
+ *
+ *      Licensed under the Apache License, Version 2.0 (the "License");
+ *      you may not use this file except in compliance with the License.
+ *      You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *      Unless required by applicable law or agreed to in writing, software
+ *      distributed under the License is distributed on an "AS IS" BASIS,
+ *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *      See the License for the specific language governing permissions and
+ *      limitations under the License.
+ */
+
+#include "AutoInstallJava.h"
+#include <QDir>
+#include <QFileInfo>
+#include <memory>
+
+#include "Application.h"
+#include "FileSystem.h"
+#include "MessageLevel.h"
+#include "SysInfo.h"
+#include "java/JavaInstall.h"
+#include "java/JavaInstallList.h"
+#include "java/JavaUtils.h"
+#include "java/JavaVersion.h"
+#include "java/download/ArchiveDownloadTask.h"
+#include "java/download/ManifestDownloadTask.h"
+#include "meta/Index.h"
+#include "minecraft/MinecraftInstance.h"
+#include "minecraft/PackProfile.h"
+#include "net/Mode.h"
+
+AutoInstallJava::AutoInstallJava(LaunchTask* parent)
+    : LaunchStep(parent)
+    , m_instance(std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance()))
+    , m_supported_arch(SysInfo::getSupportedJavaArchitecture()) {};
+
+void AutoInstallJava::executeTask()
+{
+    auto settings = m_instance->settings();
+    if (!APPLICATION->settings()->get("AutomaticJavaSwitch").toBool() ||
+        (settings->get("OverrideJavaLocation").toBool() && QFileInfo::exists(settings->get("JavaPath").toString()))) {
+        emitSucceeded();
+        return;
+    }
+    auto packProfile = m_instance->getPackProfile();
+    if (!APPLICATION->settings()->get("AutomaticJavaDownload").toBool()) {
+        auto javas = APPLICATION->javalist();
+        m_current_task = javas->getLoadTask();
+        connect(m_current_task.get(), &Task::finished, this, [this, javas, packProfile] {
+            for (auto i = 0; i < javas->count(); i++) {
+                auto java = std::dynamic_pointer_cast<JavaInstall>(javas->at(i));
+                if (java && packProfile->getProfile()->getCompatibleJavaMajors().contains(java->id.major())) {
+                    if (!java->is_64bit) {
+                        emit logLine(tr("The automatic Java mechanism detected a 32-bit installation of Java."), MessageLevel::Info);
+                    }
+                    setJavaPath(java->path);
+                    return;
+                }
+            }
+            emit logLine(tr("No compatible Java version was found. Using the default one."), MessageLevel::Warning);
+            emitSucceeded();
+        });
+        connect(m_current_task.get(), &Task::progress, this, &AutoInstallJava::setProgress);
+        connect(m_current_task.get(), &Task::stepProgress, this, &AutoInstallJava::propagateStepProgress);
+        connect(m_current_task.get(), &Task::status, this, &AutoInstallJava::setStatus);
+        connect(m_current_task.get(), &Task::details, this, &AutoInstallJava::setDetails);
+        emit progressReportingRequest();
+        return;
+    }
+    if (m_supported_arch.isEmpty()) {
+        emit logLine(tr("Your system (%1-%2) is not compatible with automatic Java installation. Using the default Java path.")
+                         .arg(SysInfo::currentSystem(), SysInfo::useQTForArch()),
+                     MessageLevel::Warning);
+        emitSucceeded();
+        return;
+    }
+    auto wantedJavaName = packProfile->getProfile()->getCompatibleJavaName();
+    if (wantedJavaName.isEmpty()) {
+        emit logLine(tr("Your meta information is out of date or doesn't have the information necessary to determine what installation of "
+                        "Java should be used. "
+                        "Using the default Java path."),
+                     MessageLevel::Warning);
+        emitSucceeded();
+        return;
+    }
+    QDir javaDir(APPLICATION->javaPath());
+    auto wantedJavaPath = javaDir.absoluteFilePath(wantedJavaName);
+    if (QFileInfo::exists(wantedJavaPath)) {
+        setJavaPathFromPartial();
+        return;
+    }
+    auto versionList = APPLICATION->metadataIndex()->get("net.minecraft.java");
+    m_current_task = versionList->getLoadTask();
+    connect(m_current_task.get(), &Task::succeeded, this, &AutoInstallJava::tryNextMajorJava);
+    connect(m_current_task.get(), &Task::failed, this, &AutoInstallJava::emitFailed);
+    connect(m_current_task.get(), &Task::progress, this, &AutoInstallJava::setProgress);
+    connect(m_current_task.get(), &Task::stepProgress, this, &AutoInstallJava::propagateStepProgress);
+    connect(m_current_task.get(), &Task::status, this, &AutoInstallJava::setStatus);
+    connect(m_current_task.get(), &Task::details, this, &AutoInstallJava::setDetails);
+    if (!m_current_task->isRunning()) {
+        m_current_task->start();
+    }
+    emit progressReportingRequest();
+}
+
+void AutoInstallJava::setJavaPath(QString path)
+{
+    auto settings = m_instance->settings();
+    settings->set("OverrideJavaLocation", true);
+    settings->set("JavaPath", path);
+    settings->set("AutomaticJava", true);
+    emit logLine(tr("Compatible Java found at: %1.").arg(path), MessageLevel::Info);
+    emitSucceeded();
+}
+
+void AutoInstallJava::setJavaPathFromPartial()
+{
+    auto packProfile = m_instance->getPackProfile();
+    auto javaName = packProfile->getProfile()->getCompatibleJavaName();
+    QDir javaDir(APPLICATION->javaPath());
+    // just checking if the executable is there should suffice
+    // but if needed this can be achieved through refreshing the javalist
+    // and retrieving the path that contains the java name
+    auto relativeBinary = FS::PathCombine(javaName, "bin", JavaUtils::javaExecutable);
+    auto finalPath = javaDir.absoluteFilePath(relativeBinary);
+    if (QFileInfo::exists(finalPath)) {
+        setJavaPath(finalPath);
+    } else {
+        emit logLine(tr("No compatible Java version was found (the binary file does not exist). Using the default one."),
+                     MessageLevel::Warning);
+        emitSucceeded();
+    }
+    return;
+}
+
+void AutoInstallJava::downloadJava(Meta::Version::Ptr version, QString javaName)
+{
+    auto runtimes = version->data()->runtimes;
+    for (auto java : runtimes) {
+        if (java->runtimeOS == m_supported_arch && java->name() == javaName) {
+            QDir javaDir(APPLICATION->javaPath());
+            auto final_path = javaDir.absoluteFilePath(java->m_name);
+            switch (java->downloadType) {
+                case Java::DownloadType::Manifest:
+                    m_current_task = makeShared<Java::ManifestDownloadTask>(java->url, final_path, java->checksumType, java->checksumHash);
+                    break;
+                case Java::DownloadType::Archive:
+                    m_current_task = makeShared<Java::ArchiveDownloadTask>(java->url, final_path, java->checksumType, java->checksumHash);
+                    break;
+                case Java::DownloadType::Unknown:
+                    emitFailed(tr("Could not determine Java download type!"));
+                    return;
+            }
+            auto deletePath = [final_path] { FS::deletePath(final_path); };
+            connect(m_current_task.get(), &Task::failed, this, [this, deletePath](QString reason) {
+                deletePath();
+                emitFailed(reason);
+            });
+            connect(this, &Task::aborted, this, [this, deletePath] {
+                m_current_task->abort();
+                deletePath();
+            });
+            connect(m_current_task.get(), &Task::succeeded, this, &AutoInstallJava::setJavaPathFromPartial);
+            connect(m_current_task.get(), &Task::failed, this, &AutoInstallJava::tryNextMajorJava);
+            connect(m_current_task.get(), &Task::progress, this, &AutoInstallJava::setProgress);
+            connect(m_current_task.get(), &Task::stepProgress, this, &AutoInstallJava::propagateStepProgress);
+            connect(m_current_task.get(), &Task::status, this, &AutoInstallJava::setStatus);
+            connect(m_current_task.get(), &Task::details, this, &AutoInstallJava::setDetails);
+            m_current_task->start();
+            return;
+        }
+    }
+    tryNextMajorJava();
+}
+
+void AutoInstallJava::tryNextMajorJava()
+{
+    if (!isRunning())
+        return;
+    auto versionList = APPLICATION->metadataIndex()->get("net.minecraft.java");
+    auto packProfile = m_instance->getPackProfile();
+    auto wantedJavaName = packProfile->getProfile()->getCompatibleJavaName();
+    auto majorJavaVersions = packProfile->getProfile()->getCompatibleJavaMajors();
+    if (m_majorJavaVersionIndex >= majorJavaVersions.length()) {
+        emit logLine(
+            tr("No versions of Java were found for your operating system: %1-%2").arg(SysInfo::currentSystem(), SysInfo::useQTForArch()),
+            MessageLevel::Warning);
+        emit logLine(tr("No compatible version of Java was found. Using the default one."), MessageLevel::Warning);
+        emitSucceeded();
+        return;
+    }
+    auto majorJavaVersion = majorJavaVersions[m_majorJavaVersionIndex];
+    m_majorJavaVersionIndex++;
+
+    auto javaMajor = versionList->getVersion(QString("java%1").arg(majorJavaVersion));
+
+    if (javaMajor->isLoaded()) {
+        downloadJava(javaMajor, wantedJavaName);
+    } else {
+        m_current_task = APPLICATION->metadataIndex()->loadVersion("net.minecraft.java", javaMajor->version(), Net::Mode::Online);
+        connect(m_current_task.get(), &Task::succeeded, this,
+                [this, javaMajor, wantedJavaName] { downloadJava(javaMajor, wantedJavaName); });
+        connect(m_current_task.get(), &Task::failed, this, &AutoInstallJava::tryNextMajorJava);
+        connect(m_current_task.get(), &Task::progress, this, &AutoInstallJava::setProgress);
+        connect(m_current_task.get(), &Task::stepProgress, this, &AutoInstallJava::propagateStepProgress);
+        connect(m_current_task.get(), &Task::status, this, &AutoInstallJava::setStatus);
+        connect(m_current_task.get(), &Task::details, this, &AutoInstallJava::setDetails);
+        if (!m_current_task->isRunning()) {
+            m_current_task->start();
+        }
+    }
+}
+bool AutoInstallJava::abort()
+{
+    if (m_current_task && m_current_task->canAbort())
+        return m_current_task->abort();
+    return true;
+}

launcher/minecraft/launch/AutoInstallJava.h

@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2021 MultiMC Contributors
+ *
+ *      Licensed under the Apache License, Version 2.0 (the "License");
+ *      you may not use this file except in compliance with the License.
+ *      You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *      Unless required by applicable law or agreed to in writing, software
+ *      distributed under the License is distributed on an "AS IS" BASIS,
+ *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *      See the License for the specific language governing permissions and
+ *      limitations under the License.
+ */
+
+#pragma once
+
+#include <launch/LaunchStep.h>
+#include <launch/LaunchTask.h>
+#include "java/JavaMetadata.h"
+#include "meta/Version.h"
+#include "minecraft/MinecraftInstance.h"
+#include "tasks/Task.h"
+
+class AutoInstallJava : public LaunchStep {
+    Q_OBJECT
+
+   public:
+    explicit AutoInstallJava(LaunchTask* parent);
+    ~AutoInstallJava() override = default;
+
+    void executeTask() override;
+    bool canAbort() const override { return m_current_task ? m_current_task->canAbort() : false; }
+    bool abort() override;
+
+   protected:
+    void setJavaPath(QString path);
+    void setJavaPathFromPartial();
+    void downloadJava(Meta::Version::Ptr version, QString javaName);
+    void tryNextMajorJava();
+
+   private:
+    MinecraftInstancePtr m_instance;
+    Task::Ptr m_current_task;
+
+    qsizetype m_majorJavaVersionIndex = 0;
+    const QString m_supported_arch;
+};

launcher/minecraft/launch/LauncherPartLaunch.cpp

@@ -90,7 +90,7 @@ void LauncherPartLaunch::executeTask()
         }
     }
 
-    m_launchScript = minecraftInstance->createLaunchScript(m_session, m_serverToJoin);
+    m_launchScript = minecraftInstance->createLaunchScript(m_session, m_targetToJoin);
     QStringList args = minecraftInstance->javaArguments();
     QString allArgs = args.join(", ");
     emit logLine("Java Arguments:\n[" + m_parent->censorPrivateInfo(allArgs) + "]\n\n", MessageLevel::Launcher);

launcher/minecraft/launch/LauncherPartLaunch.h

@@ -19,13 +19,13 @@
 #include <launch/LaunchStep.h>
 #include <minecraft/auth/AuthSession.h>
 
-#include "MinecraftServerTarget.h"
+#include "MinecraftTarget.h"
 
 class LauncherPartLaunch : public LaunchStep {
     Q_OBJECT
    public:
     explicit LauncherPartLaunch(LaunchTask* parent);
-    virtual ~LauncherPartLaunch() {};
+    virtual ~LauncherPartLaunch() = default;
 
     virtual void executeTask();
     virtual bool abort();
@@ -34,7 +34,7 @@ class LauncherPartLaunch : public LaunchStep {
     void setWorkingDirectory(const QString& wd);
     void setAuthSession(AuthSessionPtr session) { m_session = session; }
 
-    void setServerToJoin(MinecraftServerTargetPtr serverToJoin) { m_serverToJoin = std::move(serverToJoin); }
+    void setTargetToJoin(MinecraftTarget::Ptr targetToJoin) { m_targetToJoin = std::move(targetToJoin); }
 
    private slots:
     void on_state(LoggedProcess::State state);
@@ -44,7 +44,7 @@ class LauncherPartLaunch : public LaunchStep {
     QString m_command;
     AuthSessionPtr m_session;
     QString m_launchScript;
-    MinecraftServerTargetPtr m_serverToJoin;
+    MinecraftTarget::Ptr m_targetToJoin;
 
     bool mayProceed = false;
 };

launcher/minecraft/launch/MinecraftTarget.cpp

@@ -13,13 +13,18 @@
  * limitations under the License.
  */
 
-#include "MinecraftServerTarget.h"
+#include "MinecraftTarget.h"
 
 #include <QStringList>
 
 // FIXME: the way this is written, it can't ever do any sort of validation and can accept total junk
-MinecraftServerTarget MinecraftServerTarget::parse(const QString& fullAddress)
+MinecraftTarget MinecraftTarget::parse(const QString& fullAddress, bool useWorld)
 {
+    if (useWorld) {
+        MinecraftTarget target;
+        target.world = fullAddress;
+        return target;
+    }
     QStringList split = fullAddress.split(":");
 
     // The logic below replicates the exact logic minecraft uses for parsing server addresses.
@@ -56,5 +61,5 @@ MinecraftServerTarget MinecraftServerTarget::parse(const QString& fullAddress)
         }
     }
 
-    return MinecraftServerTarget{ realAddress, realPort };
+    return MinecraftTarget{ realAddress, realPort };
 }

launcher/minecraft/launch/MinecraftTarget.h

@@ -19,11 +19,11 @@
 
 #include <QString>
 
-struct MinecraftServerTarget {
+struct MinecraftTarget {
     QString address;
     quint16 port;
 
-    static MinecraftServerTarget parse(const QString& fullAddress);
+    QString world;
+    static MinecraftTarget parse(const QString& fullAddress, bool useWorld);
+    using Ptr = std::shared_ptr<MinecraftTarget>;
 };
-
-using MinecraftServerTargetPtr = std::shared_ptr<MinecraftServerTarget>;

launcher/minecraft/launch/PrintInstanceInfo.cpp

@@ -129,6 +129,6 @@ void PrintInstanceInfo::executeTask()
 #endif
 
     logLines(log, MessageLevel::Launcher);
-    logLines(instance->verboseDescription(m_session, m_serverToJoin), MessageLevel::Launcher);
+    logLines(instance->verboseDescription(m_session, m_targetToJoin), MessageLevel::Launcher);
     emitSucceeded();
 }

launcher/minecraft/launch/PrintInstanceInfo.h

@@ -16,22 +16,21 @@
 #pragma once
 
 #include <launch/LaunchStep.h>
-#include <memory>
 #include "minecraft/auth/AuthSession.h"
-#include "minecraft/launch/MinecraftServerTarget.h"
+#include "minecraft/launch/MinecraftTarget.h"
 
 // FIXME: temporary wrapper for existing task.
 class PrintInstanceInfo : public LaunchStep {
     Q_OBJECT
    public:
-    explicit PrintInstanceInfo(LaunchTask* parent, AuthSessionPtr session, MinecraftServerTargetPtr serverToJoin)
+    explicit PrintInstanceInfo(LaunchTask* parent, AuthSessionPtr session, MinecraftTarget::Ptr targetToJoin)
-        : LaunchStep(parent), m_session(session), m_serverToJoin(serverToJoin) {};
+        : LaunchStep(parent), m_session(session), m_targetToJoin(targetToJoin) {};
-    virtual ~PrintInstanceInfo() {};
+    virtual ~PrintInstanceInfo() = default;
 
     virtual void executeTask();
     virtual bool canAbort() const { return false; }
 
    private:
     AuthSessionPtr m_session;
-    MinecraftServerTargetPtr m_serverToJoin;
+    MinecraftTarget::Ptr m_targetToJoin;
 };

launcher/minecraft/launch/VerifyJavaInstall.cpp

@@ -34,7 +34,12 @@
  */
 
 #include "VerifyJavaInstall.h"
+#include <memory>
 
+#include "Application.h"
+#include "MessageLevel.h"
+#include "java/JavaInstall.h"
+#include "java/JavaInstallList.h"
 #include "java/JavaVersion.h"
 #include "minecraft/MinecraftInstance.h"
 #include "minecraft/PackProfile.h"
@@ -46,6 +51,15 @@ void VerifyJavaInstall::executeTask()
     auto settings = instance->settings();
     auto storedVersion = settings->get("JavaVersion").toString();
     auto ignoreCompatibility = settings->get("IgnoreJavaCompatibility").toBool();
+    auto javaArchitecture = settings->get("JavaArchitecture").toString();
+    auto maxMemAlloc = settings->get("MaxMemAlloc").toInt();
+
+    if (javaArchitecture == "32" && maxMemAlloc > 2048) {
+        emit logLine(tr("Max memory allocation exceeds the supported value.\n"
+                        "The selected installation of Java is 32-bit and doesn't support more than 2048MiB of RAM.\n"
+                        "The instance may not start due to this."),
+                     MessageLevel::Error);
+    }
 
     auto compatibleMajors = packProfile->getProfile()->getCompatibleJavaMajors();
 

launcher/minecraft/update/AssetUpdateTask.cpp

@@ -32,8 +32,7 @@ void AssetUpdateTask::executeTask()
     auto hexSha1 = assets->sha1.toLatin1();
     qDebug() << "Asset index SHA1:" << hexSha1;
     auto dl = Net::ApiDownload::makeCached(indexUrl, entry);
-    auto rawSha1 = QByteArray::fromHex(assets->sha1.toLatin1());
+    dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, assets->sha1));
-    dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, rawSha1));
     job->addNetAction(dl);
 
     downloadJob.reset(job);

launcher/modplatform/atlauncher/ATLPackInstallTask.cpp

@@ -343,9 +343,7 @@ QString PackInstallTask::getVersionForLoader(QString uid)
             return Q_NULLPTR;
         }
 
-        if (!vlist->isLoaded()) {
+        vlist->waitToLoad();
-            vlist->load(Net::Mode::Online);
-        }
 
         if (m_version.loader.recommended || m_version.loader.latest) {
             for (int i = 0; i < vlist->versions().size(); i++) {
@@ -638,8 +636,7 @@ void PackInstallTask::installConfigs()
 
     auto dl = Net::ApiDownload::makeCached(url, entry);
     if (!m_version.configs.sha1.isEmpty()) {
-        auto rawSha1 = QByteArray::fromHex(m_version.configs.sha1.toLatin1());
+        dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, m_version.configs.sha1));
-        dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, rawSha1));
     }
     jobPtr->addNetAction(dl);
     archivePath = entry->getFullPath();
@@ -758,8 +755,7 @@ void PackInstallTask::downloadMods()
 
             auto dl = Net::ApiDownload::makeCached(url, entry);
             if (!mod.md5.isEmpty()) {
-                auto rawMd5 = QByteArray::fromHex(mod.md5.toLatin1());
+                dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, mod.md5));
-                dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, rawMd5));
             }
             jobPtr->addNetAction(dl);
         } else if (mod.type == ModType::Decomp) {
@@ -769,8 +765,7 @@ void PackInstallTask::downloadMods()
 
             auto dl = Net::ApiDownload::makeCached(url, entry);
             if (!mod.md5.isEmpty()) {
-                auto rawMd5 = QByteArray::fromHex(mod.md5.toLatin1());
+                dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, mod.md5));
-                dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, rawMd5));
             }
             jobPtr->addNetAction(dl);
         } else {
@@ -783,8 +778,7 @@ void PackInstallTask::downloadMods()
 
             auto dl = Net::ApiDownload::makeCached(url, entry);
             if (!mod.md5.isEmpty()) {
-                auto rawMd5 = QByteArray::fromHex(mod.md5.toLatin1());
+                dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, mod.md5));
-                dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, rawMd5));
             }
             jobPtr->addNetAction(dl);
 
@@ -1075,36 +1069,7 @@ void PackInstallTask::install()
 
 static Meta::Version::Ptr getComponentVersion(const QString& uid, const QString& version)
 {
-    auto vlist = APPLICATION->metadataIndex()->get(uid);
+    return APPLICATION->metadataIndex()->getLoadedVersion(uid, version);
-    if (!vlist)
-        return {};
-
-    if (!vlist->isLoaded()) {
-        QEventLoop loadVersionLoop;
-        auto task = vlist->getLoadTask();
-        QObject::connect(task.get(), &Task::finished, &loadVersionLoop, &QEventLoop::quit);
-        if (!task->isRunning())
-            task->start();
-
-        loadVersionLoop.exec();
-    }
-
-    auto ver = vlist->getVersion(version);
-    if (!ver)
-        return {};
-
-    if (!ver->isLoaded()) {
-        QEventLoop loadVersionLoop;
-        ver->load(Net::Mode::Online);
-        auto task = ver->getCurrentTask();
-        QObject::connect(task.get(), &Task::finished, &loadVersionLoop, &QEventLoop::quit);
-        if (!task->isRunning())
-            task->start();
-
-        loadVersionLoop.exec();
-    }
-
-    return ver;
 }
 
 }  // namespace ATLauncher

launcher/modplatform/flame/FlamePackExportTask.cpp

@@ -246,7 +246,7 @@ void FlamePackExportTask::makeApiRequest()
         pendingHashes.clear();
         getProjectsInfo();
     });
-    connect(task.get(), &NetJob::failed, this, &FlamePackExportTask::getProjectsInfo);
+    connect(task.get(), &Task::failed, this, &FlamePackExportTask::getProjectsInfo);
     task->start();
 }
 

launcher/modplatform/modrinth/ModrinthPackExportTask.cpp

@@ -18,6 +18,7 @@
 
 #include "ModrinthPackExportTask.h"
 
+#include <QCoreApplication>
 #include <QCryptographicHash>
 #include <QFileInfo>
 #include <QMessageBox>
@@ -28,6 +29,7 @@
 #include "minecraft/mod/MetadataHandler.h"
 #include "minecraft/mod/ModFolderModel.h"
 #include "modplatform/helpers/HashUtils.h"
+#include "tasks/Task.h"
 
 const QStringList ModrinthPackExportTask::PREFIXES({ "mods/", "coremods/", "resourcepacks/", "texturepacks/", "shaderpacks/" });
 const QStringList ModrinthPackExportTask::FILE_EXTENSIONS({ "jar", "litemod", "zip" });
@@ -154,8 +156,8 @@ void ModrinthPackExportTask::makeApiRequest()
         setStatus(tr("Finding versions for hashes..."));
         auto response = std::make_shared<QByteArray>();
         task = api.currentVersions(pendingHashes.values(), "sha512", response);
-        connect(task.get(), &NetJob::succeeded, [this, response]() { parseApiResponse(response); });
+        connect(task.get(), &Task::succeeded, [this, response]() { parseApiResponse(response); });
-        connect(task.get(), &NetJob::failed, this, &ModrinthPackExportTask::emitFailed);
+        connect(task.get(), &Task::failed, this, &ModrinthPackExportTask::emitFailed);
         task->start();
     }
 }

launcher/modplatform/technic/SolderPackInstallTask.cpp

@@ -114,8 +114,7 @@ void Technic::SolderPackInstallTask::fileListSucceeded()
 
         auto dl = Net::ApiDownload::makeFile(mod.url, path);
         if (!mod.md5.isEmpty()) {
-            auto rawMd5 = QByteArray::fromHex(mod.md5.toLatin1());
+            dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, mod.md5));
-            dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Md5, rawMd5));
         }
         m_filesNetJob->addNetAction(dl);
 

launcher/net/ChecksumValidator.h

@@ -43,6 +43,9 @@
 namespace Net {
 class ChecksumValidator : public Validator {
    public:
+    ChecksumValidator(QCryptographicHash::Algorithm algorithm, QString expectedHex)
+        : Net::ChecksumValidator(algorithm, QByteArray::fromHex(expectedHex.toLatin1()))
+    {}
     ChecksumValidator(QCryptographicHash::Algorithm algorithm, QByteArray expected = QByteArray())
         : m_checksum(algorithm), m_expected(expected) {};
     virtual ~ChecksumValidator() = default;

launcher/resources/multimc/multimc.qrc

@@ -353,5 +353,11 @@
         <file>scalable/instances/neoforged.svg</file>
         <file>128x128/instances/forge.png</file>  <!-- LGPL3 Forge Development LLC -->
         <file>128x128/instances/liteloader.png</file>  <!-- CC-BY-SA 4.0 LiteLoader -->
+
+        <!-- java providers -->
+        <file>scalable/adoptium.svg</file>  <!-- The Adoptium Logo is a registered trademark of the Eclipse Foundation. -->
+        <file>scalable/azul.svg</file>  <!-- Azul, Zulu, Azul Systems, the Azul Systems logo, Azul Zulu are either registered trademarks or trademarks of Azul Systems, registered in the U.S. and elsewhere. -->
+        <file>scalable/mojang.svg</file>  <!-- The Mojang Logo is a registered trademark of Mojang AB. -->
+
     </qresource>
 </RCC>

launcher/resources/multimc/scalable/adoptium.svg

@@ -0,0 +1,180 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   sodipodi:docname="Eclipse_Adoptium_Logo_A_only_no_outline.svg"
+   inkscape:version="1.3 (0e150ed6c4, 2023-07-21)"
+   id="svg8"
+   version="1.1"
+   viewBox="0 0 800 800"
+   height="800"
+   width="800"
+   inkscape:export-filename="Eclipse_Adoptium_Logo.png"
+   inkscape:export-xdpi="61.439999"
+   inkscape:export-ydpi="61.439999"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:dc="http://purl.org/dc/elements/1.1/">
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+     id="defs2">
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+       clipPathUnits="userSpaceOnUse"
+       id="clipPath242">
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+    </clipPath>
+    <linearGradient
+       x1="0"
+       y1="0"
+       x2="1"
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+       gradientUnits="userSpaceOnUse"
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+        </g>
+      </g>
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+  </g>
+</svg>

launcher/resources/multimc/scalable/azul.svg

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="64" height="64" viewBox="0 0 64 64" fill="none" style="scroll-behavior: auto !important;">
+  <path d="M26.792 4.49429L7.62244 44.4309C7.20797 45.2944 8.12743 46.1903 8.97988 45.7536L28.26 35.8772C28.6557 35.6745 29.1376 35.7574 29.4429 36.0805L53.2128 61.2399C53.994 62.0668 55.3295 61.1553 54.844 60.1264L28.5979 4.50031C28.2386 3.73874 27.1564 3.73514 26.792 4.49429Z" fill="#00374A"/>
+  <path d="M26.792 4.49429L7.62244 44.4309C7.20797 45.2944 8.12743 46.1903 8.97988 45.7536L28.26 35.8772C28.6557 35.6745 29.1376 35.7574 29.4429 36.0805L53.2128 61.2399C53.994 62.0668 55.3295 61.1553 54.844 60.1264L28.5979 4.50031C28.2386 3.73874 27.1564 3.73514 26.792 4.49429Z" fill="url(#paint0_linear_3578_2134)" fill-opacity="0.7" style="mix-blend-mode:overlay"/>
+  <path d="M34.0172 15.5765L60.9237 19.1042C61.9046 19.2329 62.1231 20.5555 61.2357 20.9928L33.4872 34.6659L9.3254 45.9918C8.34481 46.4514 7.43514 45.2419 8.14881 44.4273L33.135 15.909C33.3551 15.6578 33.686 15.5331 34.0172 15.5765Z" fill="#006588"/>
+  <path d="M34.0172 15.5765L60.9237 19.1042C61.9046 19.2329 62.1231 20.5555 61.2357 20.9928L33.4872 34.6659L9.3254 45.9918C8.34481 46.4514 7.43514 45.2419 8.14881 44.4273L33.135 15.909C33.3551 15.6578 33.686 15.5331 34.0172 15.5765Z" fill="url(#paint1_linear_3578_2134)" fill-opacity="0.7" style="mix-blend-mode:overlay"/>
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+      <stop offset="1" stop-color="white"/>
+    </linearGradient>
+  </defs>
+</svg>

launcher/resources/multimc/scalable/mojang.svg

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   version="1.1"
+   width="800"
+   height="800"
+   viewBox="0 0 800 800"
+   xml:space="preserve"
+   style="scroll-behavior: auto !important;"
+   id="svg4"
+   sodipodi:docname="Mojang_Studios_Logo_(2020,_icon).svg"
+   inkscape:export-filename="Mojang_Studios_Logo_(2020,_icon).png"
+   inkscape:export-xdpi="61.439999"
+   inkscape:export-ydpi="61.439999"
+   inkscape:version="1.3 (0e150ed6c4, 2023-07-21)"
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+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"><sodipodi:namedview
+   id="namedview4"
+   pagecolor="#505050"
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+   vector-effect="non-scaling-stroke"
+   points="50,50 50,-50 -50,-50 -50,50 "
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launcher/translations/TranslationsModel.cpp

@@ -592,8 +592,7 @@ void TranslationsModel::downloadTranslation(QString key)
     entry->setStale(true);
 
     auto dl = Net::Download::makeCached(QUrl(BuildConfig.TRANSLATIONS_BASE_URL + lang->file_name), entry);
-    auto rawHash = QByteArray::fromHex(lang->file_sha1.toLatin1());
+    dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, lang->file_sha1));
-    dl->addValidator(new Net::ChecksumValidator(QCryptographicHash::Sha1, rawHash));
     dl->setProgress(dl->getProgress(), lang->file_size);
 
     d->m_dl_job.reset(new NetJob("Translation for " + key, APPLICATION->network()));