Merge branch 'develop' into env-vars

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>

.github/workflows/backport.yml

@@ -20,7 +20,7 @@ jobs:
     if: github.repository_owner == 'PrismLauncher' && github.event.pull_request.merged == true && (github.event_name != 'labeled' || startsWith('backport', github.event.label.name))
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Create backport PRs

.github/workflows/build.yml

@@ -54,18 +54,6 @@ jobs:
             msystem: clang64
             vcvars_arch: 'amd64_x86'
 
-          - os: windows-2022
-            name: "Windows-MSVC-Legacy"
-            msystem: ''
-            architecture: 'win32'
-            vcvars_arch: 'amd64_x86'
-            qt_ver: 5
-            qt_host: windows
-            qt_arch: 'win32_msvc2019'
-            qt_version: '5.15.2'
-            qt_modules: ''
-            qt_tools: 'tools_openssl_x86'
-
           - os: windows-2022
             name: "Windows-MSVC"
             msystem: ''
@@ -125,7 +113,7 @@ jobs:
       # PREPARE
       ##
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: 'true'
 
@@ -164,7 +152,7 @@ jobs:
 
       - name: Retrieve ccache cache (Windows MinGW-w64)
         if: runner.os == 'Windows' && matrix.msystem != '' && inputs.build_type == 'Debug'
-        uses: actions/cache@v3.3.1
+        uses: actions/cache@v3.3.2
         with:
           path: '${{ github.workspace }}\.ccache'
           key: ${{ matrix.os }}-mingw-w64-ccache-${{ github.run_id }}
@@ -620,7 +608,7 @@ jobs:
       options: --privileged
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         if: inputs.build_type == 'Debug'
         with:
           submodules: 'true'

.github/workflows/codeql.yml

@@ -8,7 +8,7 @@ jobs:
     
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: 'true'
 

.github/workflows/trigger_release.yml

@@ -3,10 +3,9 @@ name: Build Application and Make Release
 on:
   push:
     tags:
-      - '*'
+      - "*"
 
 jobs:
-
   build_release:
     name: Build Release
     uses: ./.github/workflows/build.yml
@@ -26,10 +25,10 @@ jobs:
       upload_url: ${{ steps.create_release.outputs.upload_url }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
-          submodules: 'true'
+          submodules: "true"
-          path: 'PrismLauncher-source'
+          path: "PrismLauncher-source"
       - name: Download artifacts
         uses: actions/download-artifact@v3
       - name: Grab and store version
@@ -95,9 +94,6 @@ jobs:
             PrismLauncher-Windows-MinGW-w64-${{ env.VERSION }}.zip
             PrismLauncher-Windows-MinGW-w64-Portable-${{ env.VERSION }}.zip
             PrismLauncher-Windows-MinGW-w64-Setup-${{ env.VERSION }}.exe
-            PrismLauncher-Windows-MSVC-Legacy-${{ env.VERSION }}.zip
-            PrismLauncher-Windows-MSVC-Legacy-Portable-${{ env.VERSION }}.zip
-            PrismLauncher-Windows-MSVC-Legacy-Setup-${{ env.VERSION }}.exe
             PrismLauncher-Windows-MSVC-arm64-${{ env.VERSION }}.zip
             PrismLauncher-Windows-MSVC-arm64-Portable-${{ env.VERSION }}.zip
             PrismLauncher-Windows-MSVC-arm64-Setup-${{ env.VERSION }}.exe

.github/workflows/update-flake.yml

@@ -16,8 +16,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v22
+      - uses: cachix/install-nix-action@6a9a9e84a173d90b3ffb42c5ddaf9ea033fad011 # v23
 
       - uses: DeterminateSystems/update-flake-lock@v20
         with:

README.md

@@ -50,7 +50,7 @@ Feel free to create a GitHub issue if you find a bug or want to suggest a new fe
 
 ## Translations
 
-The translation effort for Prism Launcher is hosted on [Weblate](https://hosted.weblate.org/projects/prismlauncher/launcher/) and information about translating Prism Launcher is available at <https://github.com/PrismLauncher/Translations>
+The translation effort for Prism Launcher is hosted on [Weblate](https://hosted.weblate.org/projects/prismlauncher/launcher/) and information about translating Prism Launcher is available at <https://github.com/PrismLauncher/Translations>.
 
 ## Building
 

cmake/CompilerWarnings.cmake

@@ -75,7 +75,6 @@ function(
     set(CLANG_WARNINGS
         -Wall
         -Wextra # reasonable and standard
-        -Wextra-semi # Warn about semicolon after in-class function definition.
         -Wshadow # warn the user if a variable declaration shadows one from a parent context
         -Wnon-virtual-dtor # warn the user if a class with virtual functions has a non-virtual destructor. This helps
         # catch hard to track down memory errors
@@ -90,6 +89,10 @@ function(
         -Wdouble-promotion # warn if float is implicit promoted to double
         -Wformat=2 # warn on security issues around functions that format output (ie printf)
         -Wimplicit-fallthrough # warn on statements that fallthrough without an explicit annotation
+        # -Wgnu-zero-variadic-macro-arguments (part of -pedantic) is triggered by every qCDebug() call and therefore results
+        # in a lot of noise. This warning is only notifying us that clang is emulating the GCC behaviour
+        # instead of the exact standard wording so we can safely ignore it
+        -Wno-gnu-zero-variadic-macro-arguments
     )
   endif()
 

flake.lock

@@ -3,11 +3,11 @@
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1673956053,
+        "lastModified": 1696426674,
-        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
         "type": "github"
       },
       "original": {
@@ -21,11 +21,11 @@
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1690933134,
+        "lastModified": 1696343447,
-        "narHash": "sha256-ab989mN63fQZBFrkk4Q8bYxQCktuHmBIBqUG1jl6/FQ=",
+        "narHash": "sha256-B2xAZKLkkeRFG5XcHHSXXcP7To9Xzr59KXeZiRf4vdQ=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "59cf3f1447cfc75087e7273b04b31e689a8599fb",
+        "rev": "c9afaba3dfa4085dbd2ccb38dfade5141e33d9d4",
         "type": "github"
       },
       "original": {
@@ -89,13 +89,28 @@
         "type": "github"
       }
     },
+    "nix-filter": {
+      "locked": {
+        "lastModified": 1694857738,
+        "narHash": "sha256-bxxNyLHjhu0N8T3REINXQ2ZkJco0ABFPn6PIe2QUfqo=",
+        "owner": "numtide",
+        "repo": "nix-filter",
+        "rev": "41fd48e00c22b4ced525af521ead8792402de0ea",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "nix-filter",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1692463654,
+        "lastModified": 1697009197,
-        "narHash": "sha256-F8hZmsQINI+S6UROM4jyxAMbQLtzE44pI8Nk6NtMdao=",
+        "narHash": "sha256-viVRhBTFT8fPJTb1N3brQIpFZnttmwo3JVKNuWRVc3s=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "ca3c9ac9f4cdd4bea19f592b32bb59b74ab7d783",
+        "rev": "01441e14af5e29c9d27ace398e6dd0b293e25a54",
         "type": "github"
       },
       "original": {
@@ -108,11 +123,11 @@
     "nixpkgs-lib": {
       "locked": {
         "dir": "lib",
-        "lastModified": 1690881714,
+        "lastModified": 1696019113,
-        "narHash": "sha256-h/nXluEqdiQHs1oSgkOOWF+j8gcJMWhwnZ9PFabN6q0=",
+        "narHash": "sha256-X3+DKYWJm93DRSdC5M6K5hLqzSya9BjibtBsuARoPco=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9e1960bc196baf6881340d53dccb203a951745a2",
+        "rev": "f5892ddac112a1e9b3612c39af1b72987ee5783a",
         "type": "github"
       },
       "original": {
@@ -138,11 +153,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1692274144,
+        "lastModified": 1696846637,
-        "narHash": "sha256-BxTQuRUANQ81u8DJznQyPmRsg63t4Yc+0kcyq6OLz8s=",
+        "narHash": "sha256-0hv4kbXxci2+pxhuXlVgftj/Jq79VSmtAyvfabCCtYk=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "7e3517c03d46159fdbf8c0e5c97f82d5d4b0c8fa",
+        "rev": "42e1b6095ef80a51f79595d9951eb38e91c4e6ca",
         "type": "github"
       },
       "original": {
@@ -156,6 +171,7 @@
         "flake-compat": "flake-compat",
         "flake-parts": "flake-parts",
         "libnbtplusplus": "libnbtplusplus",
+        "nix-filter": "nix-filter",
         "nixpkgs": "nixpkgs",
         "pre-commit-hooks": "pre-commit-hooks"
       }

flake.nix

@@ -4,6 +4,7 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
     flake-parts.url = "github:hercules-ci/flake-parts";
+    nix-filter.url = "github:numtide/nix-filter";
     pre-commit-hooks = {
       url = "github:cachix/pre-commit-hooks.nix";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -20,8 +21,24 @@
     };
   };
 
-  outputs = inputs:
+  outputs = {
-    inputs.flake-parts.lib.mkFlake
+    flake-parts,
-    {inherit inputs;}
+    pre-commit-hooks,
-    {imports = [./nix];};
+    ...
+  } @ inputs:
+    flake-parts.lib.mkFlake {inherit inputs;} {
+      imports = [
+        pre-commit-hooks.flakeModule
+
+        ./nix/dev.nix
+        ./nix/distribution.nix
+      ];
+
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+    };
 }

launcher/Application.cpp

@@ -504,6 +504,9 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
 
         m_settings->registerSetting("MenuBarInsteadOfToolBar", false);
 
+        m_settings->registerSetting("NumberOfConcurrentTasks", 10);
+        m_settings->registerSetting("NumberOfConcurrentDownloads", 6);
+
         QString defaultMonospace;
         int defaultSize = 11;
 #ifdef Q_OS_WIN32
@@ -580,6 +583,9 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
         m_settings->registerSetting("IgnoreJavaCompatibility", false);
         m_settings->registerSetting("IgnoreJavaWizard", false);
 
+        // Legacy settings
+        m_settings->registerSetting("OnlineFixes", false);
+
         // Native library workarounds
         m_settings->registerSetting("UseNativeOpenAL", false);
         m_settings->registerSetting("CustomOpenALPath", "");
@@ -595,6 +601,7 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
         m_settings->registerSetting("ShowGameTime", true);
         m_settings->registerSetting("ShowGlobalGameTime", true);
         m_settings->registerSetting("RecordGameTime", true);
+        m_settings->registerSetting("ShowGameTimeWithoutDays", false);
 
         // Minecraft mods
         m_settings->registerSetting("ModMetadataDisabled", false);

launcher/CMakeLists.txt

@@ -216,13 +216,9 @@ set(MINECRAFT_SOURCES
     minecraft/auth/MinecraftAccount.h
     minecraft/auth/Parsers.cpp
     minecraft/auth/Parsers.h
-    minecraft/auth/Yggdrasil.cpp
-    minecraft/auth/Yggdrasil.h
 
     minecraft/auth/flows/AuthFlow.cpp
     minecraft/auth/flows/AuthFlow.h
-    minecraft/auth/flows/Mojang.cpp
-    minecraft/auth/flows/Mojang.h
     minecraft/auth/flows/MSA.cpp
     minecraft/auth/flows/MSA.h
     minecraft/auth/flows/Offline.cpp
@@ -236,12 +232,8 @@ set(MINECRAFT_SOURCES
     minecraft/auth/steps/GetSkinStep.h
     minecraft/auth/steps/LauncherLoginStep.cpp
     minecraft/auth/steps/LauncherLoginStep.h
-    minecraft/auth/steps/MigrationEligibilityStep.cpp
-    minecraft/auth/steps/MigrationEligibilityStep.h
     minecraft/auth/steps/MinecraftProfileStep.cpp
     minecraft/auth/steps/MinecraftProfileStep.h
-    minecraft/auth/steps/MinecraftProfileStepMojang.cpp
-    minecraft/auth/steps/MinecraftProfileStepMojang.h
     minecraft/auth/steps/MSAStep.cpp
     minecraft/auth/steps/MSAStep.h
     minecraft/auth/steps/XboxAuthorizationStep.cpp
@@ -250,8 +242,6 @@ set(MINECRAFT_SOURCES
     minecraft/auth/steps/XboxProfileStep.h
     minecraft/auth/steps/XboxUserStep.cpp
     minecraft/auth/steps/XboxUserStep.h
-    minecraft/auth/steps/YggdrasilStep.cpp
-    minecraft/auth/steps/YggdrasilStep.h
 
     minecraft/gameoptions/GameOptions.h
     minecraft/gameoptions/GameOptions.cpp
@@ -918,6 +908,9 @@ SET(LAUNCHER_SOURCES
     ui/pages/modplatform/ImportPage.cpp
     ui/pages/modplatform/ImportPage.h
 
+    ui/pages/modplatform/OptionalModDialog.cpp
+    ui/pages/modplatform/OptionalModDialog.h
+
     ui/pages/modplatform/modrinth/ModrinthResourceModels.cpp
     ui/pages/modplatform/modrinth/ModrinthResourceModels.h
     ui/pages/modplatform/modrinth/ModrinthResourcePages.cpp
@@ -946,8 +939,6 @@ SET(LAUNCHER_SOURCES
     ui/dialogs/IconPickerDialog.h
     ui/dialogs/ImportResourceDialog.cpp
     ui/dialogs/ImportResourceDialog.h
-    ui/dialogs/LoginDialog.cpp
-    ui/dialogs/LoginDialog.h
     ui/dialogs/MSALoginDialog.cpp
     ui/dialogs/MSALoginDialog.h
     ui/dialogs/OfflineLoginDialog.cpp
@@ -1084,6 +1075,7 @@ qt_wrap_ui(LAUNCHER_UI
     ui/pages/modplatform/legacy_ftb/Page.ui
     ui/pages/modplatform/import_ftb/ImportFTBPage.ui
     ui/pages/modplatform/ImportPage.ui
+    ui/pages/modplatform/OptionalModDialog.ui
     ui/pages/modplatform/modrinth/ModrinthPage.ui
     ui/pages/modplatform/technic/TechnicPage.ui
     ui/widgets/InstanceCardWidget.ui
@@ -1109,7 +1101,6 @@ qt_wrap_ui(LAUNCHER_UI
     ui/dialogs/MSALoginDialog.ui
     ui/dialogs/OfflineLoginDialog.ui
     ui/dialogs/AboutDialog.ui
-    ui/dialogs/LoginDialog.ui
     ui/dialogs/EditAccountDialog.ui
     ui/dialogs/ReviewMessageBox.ui
     ui/dialogs/ScrollMessageBox.ui
@@ -1142,6 +1133,9 @@ include(CompilerWarnings)
 
 # Add executable
 add_library(Launcher_logic STATIC ${LOGIC_SOURCES} ${LAUNCHER_SOURCES} ${LAUNCHER_UI} ${LAUNCHER_RESOURCES})
+if(BUILD_TESTING)
+target_compile_definitions(Launcher_logic PUBLIC LAUNCHER_TEST)
+endif()
 set_project_warnings(Launcher_logic
     "${Launcher_MSVC_WARNINGS}"
     "${Launcher_CLANG_WARNINGS}"

launcher/FileIgnoreProxy.cpp

@@ -267,10 +267,7 @@ bool FileIgnoreProxy::filterAcceptsRow(int sourceRow, const QModelIndex& sourceP
 
 bool FileIgnoreProxy::ignoreFile(QFileInfo fileInfo) const
 {
-    auto fileName = fileInfo.fileName();
+    return m_ignoreFiles.contains(fileInfo.fileName()) || m_ignoreFilePaths.covers(relPath(fileInfo.absoluteFilePath()));
-    auto path = relPath(fileInfo.absoluteFilePath());
-    return std::any_of(m_ignoreFiles.cbegin(), m_ignoreFiles.cend(), [fileName](auto iFileName) { return fileName == iFileName; }) ||
-           m_ignoreFilePaths.covers(path);
 }
 
 bool FileIgnoreProxy::filterFile(const QString& fileName) const

launcher/FileSystem.cpp

@@ -238,6 +238,28 @@ bool ensureFolderPathExists(QString foldernamepath)
     return success;
 }
 
+bool copyFileAttributes(QString src, QString dst)
+{
+#ifdef Q_OS_WIN32
+    auto attrs = GetFileAttributesW(src.toStdWString().c_str());
+    if (attrs == INVALID_FILE_ATTRIBUTES)
+        return false;
+    return SetFileAttributesW(dst.toStdWString().c_str(), attrs);
+#endif
+    return true;
+}
+
+// needs folders to exists
+void copyFolderAttributes(QString src, QString dst, QString relative)
+{
+    auto path = PathCombine(src, relative);
+    QDir dsrc(src);
+    while ((path = QFileInfo(path).path()).length() >= src.length()) {
+        auto dst_path = PathCombine(dst, dsrc.relativeFilePath(path));
+        copyFileAttributes(path, dst_path);
+    }
+}
+
 /**
  * @brief Copies a directory and it's contents from src to dest
  * @param offset subdirectory form src to copy to dest
@@ -273,6 +295,9 @@ bool copy::operator()(const QString& offset, bool dryRun)
         auto dst_path = PathCombine(dst, relative_dst_path);
         if (!dryRun) {
             ensureFilePathExists(dst_path);
+#ifdef Q_OS_WIN32
+            copyFolderAttributes(src, dst, relative_dst_path);
+#endif
             fs::copy(StringUtils::toStdString(src_path), StringUtils::toStdString(dst_path), opt, err);
         }
         if (err) {

launcher/LaunchController.cpp

@@ -88,8 +88,8 @@ void LaunchController::decideAccount()
     if (accounts->count() <= 0) {
         // Tell the user they need to log in at least one account in order to play.
         auto reply = CustomMessageBox::selectable(m_parentWidget, tr("No Accounts"),
-                                                  tr("In order to play Minecraft, you must have at least one Microsoft or Mojang "
+                                                  tr("In order to play Minecraft, you must have at least one Microsoft "
-                                                     "account logged in. Mojang accounts can only be used offline. "
+                                                     "account which owns Minecraft logged in."
                                                      "Would you like to open the account manager to add an account now?"),
                                                   QMessageBox::Information, QMessageBox::Yes | QMessageBox::No)
                          ->exec();

launcher/MMCTime.cpp

@@ -16,19 +16,20 @@
  */
 
 #include <MMCTime.h>
+#include <qobject.h>
 
 #include <QDateTime>
 #include <QObject>
 #include <QTextStream>
 
-QString Time::prettifyDuration(int64_t duration)
+QString Time::prettifyDuration(int64_t duration, bool noDays)
 {
     int seconds = (int)(duration % 60);
     duration /= 60;
     int minutes = (int)(duration % 60);
     duration /= 60;
-    int hours = (int)(duration % 24);
+    int hours = (int)(noDays ? duration : (duration % 24));
-    int days = (int)(duration / 24);
+    int days = (int)(noDays ? 0 : (duration / 24));
     if ((hours == 0) && (days == 0)) {
         return QObject::tr("%1min %2s").arg(minutes).arg(seconds);
     }

launcher/MMCTime.h

@@ -20,7 +20,7 @@
 
 namespace Time {
 
-QString prettifyDuration(int64_t duration);
+QString prettifyDuration(int64_t duration, bool noDays = false);
 
 /**
  * @brief Returns a string with short form time duration ie. `2days 1h3m4s56.0ms`.

launcher/java/JavaInstall.h

@@ -24,11 +24,11 @@
 struct JavaInstall : public BaseVersion {
     JavaInstall() {}
     JavaInstall(QString id, QString arch, QString path) : id(id), arch(arch), path(path) {}
-    virtual QString descriptor() { return id.toString(); }
+    virtual QString descriptor() override { return id.toString(); }
 
-    virtual QString name() { return id.toString(); }
+    virtual QString name() override { return id.toString(); }
 
-    virtual QString typeString() const { return arch; }
+    virtual QString typeString() const override { return arch; }
 
     virtual bool operator<(BaseVersion& a) override;
     virtual bool operator>(BaseVersion& a) override;

launcher/java/JavaUtils.cpp

@@ -403,6 +403,14 @@ QList<QString> JavaUtils::FindJavaPaths()
     scanJavaDirs("/opt/jdks");
     // flatpak
     scanJavaDirs("/app/jdk");
+
+    auto home = qEnvironmentVariable("HOME");
+
+    // javas downloaded by IntelliJ
+    scanJavaDirs(FS::PathCombine(home, ".jdks"));
+    // javas downloaded by sdkman
+    scanJavaDirs(FS::PathCombine(home, ".sdkman/candidates/java"));
+
     javas = addJavasFromEnv(javas);
     javas.removeDuplicates();
     return javas;

launcher/java/JavaVersion.cpp

@@ -45,10 +45,12 @@ QString JavaVersion::toString() const
 
 bool JavaVersion::requiresPermGen()
 {
-    if (m_parseable) {
+    return !m_parseable || m_major < 8;
-        return m_major < 8;
+}
-    }
+
-    return true;
+bool JavaVersion::isModular()
+{
+    return m_parseable && m_major >= 9;
 }
 
 bool JavaVersion::operator<(const JavaVersion& rhs)

launcher/java/JavaVersion.h

@@ -25,6 +25,8 @@ class JavaVersion {
 
     bool requiresPermGen();
 
+    bool isModular();
+
     QString toString() const;
 
     int major() { return m_major; }

launcher/minecraft/ComponentUpdateTask.cpp

@@ -2,14 +2,14 @@
 
 #include "Component.h"
 #include "ComponentUpdateTask_p.h"
-#include "OneSixVersionFormat.h"
 #include "PackProfile.h"
 #include "PackProfile_p.h"
 #include "Version.h"
 #include "cassert"
 #include "meta/Index.h"
 #include "meta/Version.h"
-#include "meta/VersionList.h"
+#include "minecraft/OneSixVersionFormat.h"
+#include "minecraft/ProfileUtils.h"
 #include "net/Mode.h"
 
 #include "Application.h"

launcher/minecraft/MinecraftInstance.cpp

@@ -184,6 +184,10 @@ void MinecraftInstance::loadSpecificSettings()
         m_settings->registerOverride(global_settings->getSetting("CloseAfterLaunch"), miscellaneousOverride);
         m_settings->registerOverride(global_settings->getSetting("QuitAfterGameStop"), miscellaneousOverride);
 
+        // Legacy-related options
+        auto legacySettings = m_settings->registerSetting("OverrideLegacySettings", false);
+        m_settings->registerOverride(global_settings->getSetting("OnlineFixes"), legacySettings);
+      
         m_settings->registerSetting("UseEnv", false);
         m_settings->registerSetting("OverrideEnv", false);
         m_settings->registerSetting("Env", QVariant(QMap<QString, QVariant>()));
@@ -199,6 +203,12 @@ void MinecraftInstance::loadSpecificSettings()
     m_settings->registerSetting("UseAccountForInstance", false);
     m_settings->registerSetting("InstanceAccountId", "");
 
+    m_settings->registerSetting("ExportName", "");
+    m_settings->registerSetting("ExportVersion", "1.0.0");
+    m_settings->registerSetting("ExportSummary", "");
+    m_settings->registerSetting("ExportAuthor", "");
+    m_settings->registerSetting("ExportOptionalFiles", true);
+
     qDebug() << "Instance-type specific settings were loaded!";
 
     setSpecificSettingsLoaded(true);
@@ -309,7 +319,7 @@ QString MinecraftInstance::getLocalLibraryPath() const
 bool MinecraftInstance::supportsDemo() const
 {
     Version instance_ver{ getPackProfile()->getComponentVersion("net.minecraft") };
-    // Demo mode was introduced in 1.3.1: https://minecraft.fandom.com/wiki/Demo_mode#History
+    // Demo mode was introduced in 1.3.1: https://minecraft.wiki/w/Demo_mode#History
     // FIXME: Due to Version constraints atm, this can't handle well non-release versions
     return instance_ver >= Version("1.3.1");
 }
@@ -511,20 +521,28 @@ QStringList MinecraftInstance::javaArguments()
 
     args << "-Duser.language=en";
 
+    if (javaVersion.isModular() && shouldApplyOnlineFixes())
+        // allow reflective access to java.net - required by the skin fix
+        args << "--add-opens"
+             << "java.base/java.net=ALL-UNNAMED";
+
     return args;
 }
 
 QString MinecraftInstance::getLauncher()
 {
-    auto profile = m_components->getProfile();
-
     // use legacy launcher if the traits are set
-    if (profile->getTraits().contains("legacyLaunch") || profile->getTraits().contains("alphaLaunch"))
+    if (traits().contains("legacyLaunch") || traits().contains("alphaLaunch"))
         return "legacy";
 
     return "standard";
 }
 
+bool MinecraftInstance::shouldApplyOnlineFixes()
+{
+    return traits().contains("legacyServices") && settings()->get("OnlineFixes").toBool();
+}
+
 QMap<QString, QString> MinecraftInstance::getVariables()
 {
     QMap<QString, QString> out;
@@ -732,6 +750,9 @@ QString MinecraftInstance::createLaunchScript(AuthSessionPtr session, MinecraftS
         launchScript += "traits " + trait + "\n";
     }
 
+    if (shouldApplyOnlineFixes())
+        launchScript += "onlineFixes true\n";
+
     launchScript += "launcher " + getLauncher() + "\n";
 
     // qDebug() << "Generated launch script:" << launchScript;
@@ -872,9 +893,6 @@ QMap<QString, QString> MinecraftInstance::createCensorFilterFromSession(AuthSess
     if (sessionRef.access_token != "0") {
         addToFilter(sessionRef.access_token, tr("<ACCESS TOKEN>"));
     }
-    if (sessionRef.client_token.size()) {
-        addToFilter(sessionRef.client_token, tr("<CLIENT TOKEN>"));
-    }
     addToFilter(sessionRef.uuid, tr("<PROFILE ID>"));
 
     return filter;
@@ -956,13 +974,16 @@ QString MinecraftInstance::getStatusbarDescription()
     if (m_settings->get("ShowGameTime").toBool()) {
         if (lastTimePlayed() > 0) {
             QDateTime lastLaunchTime = QDateTime::fromMSecsSinceEpoch(lastLaunch());
-            description.append(tr(", last played on %1 for %2")
+            description.append(
-                                   .arg(QLocale().toString(lastLaunchTime, QLocale::ShortFormat))
+                tr(", last played on %1 for %2")
-                                   .arg(Time::prettifyDuration(lastTimePlayed())));
+                    .arg(QLocale().toString(lastLaunchTime, QLocale::ShortFormat))
+                    .arg(Time::prettifyDuration(lastTimePlayed(), APPLICATION->settings()->get("ShowGameTimeWithoutDays").toBool())));
         }
 
         if (totalTimePlayed() > 0) {
-            description.append(tr(", total played for %1").arg(Time::prettifyDuration(totalTimePlayed())));
+            description.append(
+                tr(", total played for %1")
+                    .arg(Time::prettifyDuration(totalTimePlayed(), APPLICATION->settings()->get("ShowGameTimeWithoutDays").toBool())));
         }
     }
     if (hasCrashed()) {

launcher/minecraft/MinecraftInstance.h

@@ -129,6 +129,7 @@ class MinecraftInstance : public BaseInstance {
     /// get arguments passed to java
     QStringList javaArguments();
     QString getLauncher();
+    bool shouldApplyOnlineFixes();
 
     /// get variables for launch command variable substitution/environment
     QMap<QString, QString> getVariables() override;

launcher/minecraft/PackProfile.cpp

@@ -58,15 +58,14 @@
 #include "ComponentUpdateTask.h"
 #include "PackProfile.h"
 #include "PackProfile_p.h"
+#include "minecraft/mod/Mod.h"
+#include "modplatform/ModIndex.h"
 
-#include "Application.h"
+static const QMap<QString, ModPlatform::ModLoaderType> modloaderMapping{ { "net.neoforged", ModPlatform::NeoForge },
-#include "modplatform/ResourceAPI.h"
+                                                                         { "net.minecraftforge", ModPlatform::Forge },
-
+                                                                         { "net.fabricmc.fabric-loader", ModPlatform::Fabric },
-static const QMap<QString, ResourceAPI::ModLoaderType> modloaderMapping{ { "net.neoforged", ResourceAPI::NeoForge },
+                                                                         { "org.quiltmc.quilt-loader", ModPlatform::Quilt },
-                                                                         { "net.minecraftforge", ResourceAPI::Forge },
+                                                                         { "com.mumfrey.liteloader", ModPlatform::LiteLoader } };
-                                                                         { "net.fabricmc.fabric-loader", ResourceAPI::Fabric },
-                                                                         { "org.quiltmc.quilt-loader", ResourceAPI::Quilt },
-                                                                         { "com.mumfrey.liteloader", ResourceAPI::LiteLoader } };
 
 PackProfile::PackProfile(MinecraftInstance* instance) : QAbstractListModel()
 {
@@ -990,12 +989,12 @@ void PackProfile::disableInteraction(bool disable)
     }
 }
 
-std::optional<ResourceAPI::ModLoaderTypes> PackProfile::getModLoaders()
+std::optional<ModPlatform::ModLoaderTypes> PackProfile::getModLoaders()
 {
-    ResourceAPI::ModLoaderTypes result;
+    ModPlatform::ModLoaderTypes result;
     bool has_any_loader = false;
 
-    QMapIterator<QString, ResourceAPI::ModLoaderType> i(modloaderMapping);
+    QMapIterator<QString, ModPlatform::ModLoaderType> i(modloaderMapping);
 
     while (i.hasNext()) {
         i.next();
@@ -1009,3 +1008,17 @@ std::optional<ResourceAPI::ModLoaderTypes> PackProfile::getModLoaders()
         return {};
     return result;
 }
+
+std::optional<ModPlatform::ModLoaderTypes> PackProfile::getSupportedModLoaders()
+{
+    auto loadersOpt = getModLoaders();
+    if (!loadersOpt.has_value())
+        return loadersOpt;
+    auto loaders = loadersOpt.value();
+    // TODO: remove this or add version condition once Quilt drops official Fabric support
+    if (loaders & ModPlatform::Quilt)
+        loaders |= ModPlatform::Fabric;
+    if (getComponentVersion("net.minecraft") == "1.20.1" && (loaders & ModPlatform::NeoForge))
+        loaders |= ModPlatform::Forge;
+    return loaders;
+}

launcher/minecraft/PackProfile.h

@@ -44,14 +44,11 @@
 #include <QList>
 #include <QString>
 #include <memory>
+#include <optional>
 
-#include "BaseVersion.h"
 #include "Component.h"
 #include "LaunchProfile.h"
-#include "Library.h"
+#include "modplatform/ModIndex.h"
-#include "MojangDownloadInfo.h"
-#include "ProfileUtils.h"
-#include "modplatform/ResourceAPI.h"
 #include "net/Mode.h"
 
 class MinecraftInstance;
@@ -146,7 +143,9 @@ class PackProfile : public QAbstractListModel {
     // todo(merged): is this the best approach
     void appendComponent(ComponentPtr component);
 
-    std::optional<ResourceAPI::ModLoaderTypes> getModLoaders();
+    std::optional<ModPlatform::ModLoaderTypes> getModLoaders();
+    // this returns aditional loaders(Quilt supports fabric and NeoForge supports Forge)
+    std::optional<ModPlatform::ModLoaderTypes> getSupportedModLoaders();
 
    private:
     void scheduleSave();

launcher/minecraft/auth/AccountData.cpp

@@ -278,67 +278,6 @@ bool entitlementFromJSONV3(const QJsonObject& parent, MinecraftEntitlement& out)
 
 }  // namespace
 
-bool AccountData::resumeStateFromV2(QJsonObject data)
-{
-    // The JSON object must at least have a username for it to be valid.
-    if (!data.value("username").isString()) {
-        qCritical() << "Can't load Mojang account info from JSON object. Username field is missing or of the wrong type.";
-        return false;
-    }
-
-    QString userName = data.value("username").toString("");
-    QString clientToken = data.value("clientToken").toString("");
-    QString accessToken = data.value("accessToken").toString("");
-
-    QJsonArray profileArray = data.value("profiles").toArray();
-    if (profileArray.size() < 1) {
-        qCritical() << "Can't load Mojang account with username \"" << userName << "\". No profiles found.";
-        return false;
-    }
-
-    struct AccountProfile {
-        QString id;
-        QString name;
-        bool legacy;
-    };
-
-    QList<AccountProfile> profiles;
-    int currentProfileIndex = 0;
-    int index = -1;
-    QString currentProfile = data.value("activeProfile").toString("");
-    for (QJsonValue profileVal : profileArray) {
-        index++;
-        QJsonObject profileObject = profileVal.toObject();
-        QString id = profileObject.value("id").toString("");
-        QString name = profileObject.value("name").toString("");
-        bool legacy_ = profileObject.value("legacy").toBool(false);
-        if (id.isEmpty() || name.isEmpty()) {
-            qWarning() << "Unable to load a profile" << name << "because it was missing an ID or a name.";
-            continue;
-        }
-        if (id == currentProfile) {
-            currentProfileIndex = index;
-        }
-        profiles.append({ id, name, legacy_ });
-    }
-    auto& profile = profiles[currentProfileIndex];
-
-    type = AccountType::Mojang;
-    legacy = profile.legacy;
-
-    minecraftProfile.id = profile.id;
-    minecraftProfile.name = profile.name;
-    minecraftProfile.validity = Katabasis::Validity::Assumed;
-
-    yggdrasilToken.token = accessToken;
-    yggdrasilToken.extra["clientToken"] = clientToken;
-    yggdrasilToken.extra["userName"] = userName;
-    yggdrasilToken.validity = Katabasis::Validity::Assumed;
-
-    validity_ = minecraftProfile.validity;
-    return true;
-}
-
 bool AccountData::resumeStateFromV3(QJsonObject data)
 {
     auto typeV = data.value("type");
@@ -349,8 +288,6 @@ bool AccountData::resumeStateFromV3(QJsonObject data)
     auto typeS = typeV.toString();
     if (typeS == "MSA") {
         type = AccountType::MSA;
-    } else if (typeS == "Mojang") {
-        type = AccountType::Mojang;
     } else if (typeS == "Offline") {
         type = AccountType::Offline;
     } else {
@@ -358,11 +295,6 @@ bool AccountData::resumeStateFromV3(QJsonObject data)
         return false;
     }
 
-    if (type == AccountType::Mojang) {
-        legacy = data.value("legacy").toBool(false);
-        canMigrateToMSA = data.value("canMigrateToMSA").toBool(false);
-    }
-
     if (type == AccountType::MSA) {
         auto clientIDV = data.value("msa-client-id");
         if (clientIDV.isString()) {
@@ -395,15 +327,7 @@ bool AccountData::resumeStateFromV3(QJsonObject data)
 QJsonObject AccountData::saveState() const
 {
     QJsonObject output;
-    if (type == AccountType::Mojang) {
+    if (type == AccountType::MSA) {
-        output["type"] = "Mojang";
-        if (legacy) {
-            output["legacy"] = true;
-        }
-        if (canMigrateToMSA) {
-            output["canMigrateToMSA"] = true;
-        }
-    } else if (type == AccountType::MSA) {
         output["type"] = "MSA";
         output["msa-client-id"] = msaClientID;
         tokenToJSONV3(output, msaToken, "msa");
@@ -420,51 +344,11 @@ QJsonObject AccountData::saveState() const
     return output;
 }
 
-QString AccountData::userName() const
-{
-    if (type == AccountType::MSA) {
-        return QString();
-    }
-    return yggdrasilToken.extra["userName"].toString();
-}
-
 QString AccountData::accessToken() const
 {
     return yggdrasilToken.token;
 }
 
-QString AccountData::clientToken() const
-{
-    if (type != AccountType::Mojang) {
-        return QString();
-    }
-    return yggdrasilToken.extra["clientToken"].toString();
-}
-
-void AccountData::setClientToken(QString clientToken)
-{
-    if (type != AccountType::Mojang) {
-        return;
-    }
-    yggdrasilToken.extra["clientToken"] = clientToken;
-}
-
-void AccountData::generateClientTokenIfMissing()
-{
-    if (yggdrasilToken.extra.contains("clientToken")) {
-        return;
-    }
-    invalidateClientToken();
-}
-
-void AccountData::invalidateClientToken()
-{
-    if (type != AccountType::Mojang) {
-        return;
-    }
-    yggdrasilToken.extra["clientToken"] = QUuid::createUuid().toString().remove(QRegularExpression("[{-}]"));
-}
-
 QString AccountData::profileId() const
 {
     return minecraftProfile.id;
@@ -482,9 +366,6 @@ QString AccountData::profileName() const
 QString AccountData::accountDisplayString() const
 {
     switch (type) {
-        case AccountType::Mojang: {
-            return userName();
-        }
         case AccountType::Offline: {
             return QObject::tr("<Offline>");
         }

launcher/minecraft/auth/AccountData.h

@@ -71,27 +71,17 @@ struct MinecraftProfile {
     Katabasis::Validity validity = Katabasis::Validity::None;
 };
 
-enum class AccountType { MSA, Mojang, Offline };
+enum class AccountType { MSA, Offline };
 
 enum class AccountState { Unchecked, Offline, Working, Online, Disabled, Errored, Expired, Gone };
 
 struct AccountData {
     QJsonObject saveState() const;
-    bool resumeStateFromV2(QJsonObject data);
     bool resumeStateFromV3(QJsonObject data);
 
     //! userName for Mojang accounts, gamertag for MSA
     QString accountDisplayString() const;
 
-    //! Only valid for Mojang accounts. MSA does not preserve this information
-    QString userName() const;
-
-    //! Only valid for Mojang accounts.
-    QString clientToken() const;
-    void setClientToken(QString clientToken);
-    void invalidateClientToken();
-    void generateClientTokenIfMissing();
-
     //! Yggdrasil access token, as passed to the game.
     QString accessToken() const;
 
@@ -101,8 +91,6 @@ struct AccountData {
     QString lastError() const;
 
     AccountType type = AccountType::MSA;
-    bool legacy = false;
-    bool canMigrateToMSA = false;
 
     QString msaClientID;
     Katabasis::Token msaToken;

launcher/minecraft/auth/AccountList.cpp

@@ -54,7 +54,7 @@
 
 #include <chrono>
 
-enum AccountListVersion { MojangOnly = 2, MojangMSA = 3 };
+enum AccountListVersion { MojangMSA = 3 };
 
 AccountList::AccountList(QObject* parent) : QAbstractListModel(parent)
 {
@@ -320,17 +320,6 @@ QVariant AccountList::data(const QModelIndex& index, int role) const
                     }
                 }
 
-                case MigrationColumn: {
-                    if (account->isMSA() || account->isOffline()) {
-                        return tr("N/A", "Can Migrate");
-                    }
-                    if (account->canMigrate()) {
-                        return tr("Yes", "Can Migrate");
-                    } else {
-                        return tr("No", "Can Migrate");
-                    }
-                }
-
                 default:
                     return QVariant();
             }
@@ -366,8 +355,6 @@ QVariant AccountList::headerData(int section, [[maybe_unused]] Qt::Orientation o
                     return tr("Type");
                 case StatusColumn:
                     return tr("Status");
-                case MigrationColumn:
-                    return tr("Can Migrate?");
                 default:
                     return QVariant();
             }
@@ -379,11 +366,9 @@ QVariant AccountList::headerData(int section, [[maybe_unused]] Qt::Orientation o
                 case NameColumn:
                     return tr("User name of the account.");
                 case TypeColumn:
-                    return tr("Type of the account - Mojang or MSA.");
+                    return tr("Type of the account (MSA or Offline)");
                 case StatusColumn:
                     return tr("Current status of the account.");
-                case MigrationColumn:
-                    return tr("Can this account migrate to a Microsoft account?");
                 default:
                     return QVariant();
             }
@@ -473,9 +458,6 @@ bool AccountList::loadList()
     // Make sure the format version matches.
     auto listVersion = root.value("formatVersion").toVariant().toInt();
     switch (listVersion) {
-        case AccountListVersion::MojangOnly: {
-            return loadV2(root);
-        } break;
         case AccountListVersion::MojangMSA: {
             return loadV3(root);
         } break;
@@ -489,36 +471,6 @@ bool AccountList::loadList()
     }
 }
 
-bool AccountList::loadV2(QJsonObject& root)
-{
-    beginResetModel();
-    auto defaultUserName = root.value("activeAccount").toString("");
-    QJsonArray accounts = root.value("accounts").toArray();
-    for (QJsonValue accountVal : accounts) {
-        QJsonObject accountObj = accountVal.toObject();
-        MinecraftAccountPtr account = MinecraftAccount::loadFromJsonV2(accountObj);
-        if (account.get() != nullptr) {
-            auto profileId = account->profileId();
-            if (!profileId.size()) {
-                continue;
-            }
-            if (findAccountByProfileId(profileId) != -1) {
-                continue;
-            }
-            connect(account.get(), &MinecraftAccount::changed, this, &AccountList::accountChanged);
-            connect(account.get(), &MinecraftAccount::activityChanged, this, &AccountList::accountActivityChanged);
-            m_accounts.append(account);
-            if (defaultUserName.size() && account->mojangUserName() == defaultUserName) {
-                m_defaultAccount = account;
-            }
-        } else {
-            qWarning() << "Failed to load an account.";
-        }
-    }
-    endResetModel();
-    return true;
-}
-
 bool AccountList::loadV3(QJsonObject& root)
 {
     beginResetModel();

launcher/minecraft/auth/AccountList.h

@@ -55,7 +55,6 @@ class AccountList : public QAbstractListModel {
         // TODO: Add icon column.
         ProfileNameColumn = 0,
         NameColumn,
-        MigrationColumn,
         TypeColumn,
         StatusColumn,
 
@@ -97,7 +96,6 @@ class AccountList : public QAbstractListModel {
     void setListFilePath(QString path, bool autosave = false);
 
     bool loadList();
-    bool loadV2(QJsonObject& root);
     bool loadV3(QJsonObject& root);
     bool saveList();
 

launcher/minecraft/auth/AuthSession.h

@@ -24,10 +24,6 @@ struct AuthSession {
         GoneOrMigrated
     } status = Undetermined;
 
-    // client token
-    QString client_token;
-    // account user name
-    QString username;
     // combined session ID
     QString session;
     // volatile auth token

launcher/minecraft/auth/MinecraftAccount.cpp

@@ -51,7 +51,6 @@
 #include <QPainter>
 
 #include "flows/MSA.h"
-#include "flows/Mojang.h"
 #include "flows/Offline.h"
 
 MinecraftAccount::MinecraftAccount(QObject* parent) : QObject(parent)
@@ -59,15 +58,6 @@ MinecraftAccount::MinecraftAccount(QObject* parent) : QObject(parent)
     data.internalId = QUuid::createUuid().toString().remove(QRegularExpression("[{}-]"));
 }
 
-MinecraftAccountPtr MinecraftAccount::loadFromJsonV2(const QJsonObject& json)
-{
-    MinecraftAccountPtr account(new MinecraftAccount());
-    if (account->data.resumeStateFromV2(json)) {
-        return account;
-    }
-    return nullptr;
-}
-
 MinecraftAccountPtr MinecraftAccount::loadFromJsonV3(const QJsonObject& json)
 {
     MinecraftAccountPtr account(new MinecraftAccount());
@@ -77,15 +67,6 @@ MinecraftAccountPtr MinecraftAccount::loadFromJsonV3(const QJsonObject& json)
     return nullptr;
 }
 
-MinecraftAccountPtr MinecraftAccount::createFromUsername(const QString& username)
-{
-    auto account = makeShared<MinecraftAccount>();
-    account->data.type = AccountType::Mojang;
-    account->data.yggdrasilToken.extra["userName"] = username;
-    account->data.yggdrasilToken.extra["clientToken"] = QUuid::createUuid().toString().remove(QRegularExpression("[{}-]"));
-    return account;
-}
-
 MinecraftAccountPtr MinecraftAccount::createBlankMSA()
 {
     MinecraftAccountPtr account(new MinecraftAccount());
@@ -138,18 +119,6 @@ QPixmap MinecraftAccount::getFace() const
     return skin.scaled(64, 64, Qt::KeepAspectRatio);
 }
 
-shared_qobject_ptr<AccountTask> MinecraftAccount::login(QString password)
-{
-    Q_ASSERT(m_currentTask.get() == nullptr);
-
-    m_currentTask.reset(new MojangLogin(&data, password));
-    connect(m_currentTask.get(), &Task::succeeded, this, &MinecraftAccount::authSucceeded);
-    connect(m_currentTask.get(), &Task::failed, this, &MinecraftAccount::authFailed);
-    connect(m_currentTask.get(), &Task::aborted, this, [this] { authFailed(tr("Aborted")); });
-    emit activityChanged(true);
-    return m_currentTask;
-}
-
 shared_qobject_ptr<AccountTask> MinecraftAccount::loginMSA()
 {
     Q_ASSERT(m_currentTask.get() == nullptr);
@@ -182,10 +151,8 @@ shared_qobject_ptr<AccountTask> MinecraftAccount::refresh()
 
     if (data.type == AccountType::MSA) {
         m_currentTask.reset(new MSASilent(&data));
-    } else if (data.type == AccountType::Offline) {
-        m_currentTask.reset(new OfflineRefresh(&data));
     } else {
-        m_currentTask.reset(new MojangRefresh(&data));
+        m_currentTask.reset(new OfflineRefresh(&data));
     }
 
     connect(m_currentTask.get(), &Task::succeeded, this, &MinecraftAccount::authSucceeded);
@@ -296,13 +263,8 @@ void MinecraftAccount::fillSession(AuthSessionPtr session)
         }
     }
 
-    // the user name. you have to have an user name
-    // FIXME: not with MSA
-    session->username = data.userName();
     // volatile auth token
     session->access_token = data.accessToken();
-    // the semi-permanent client token
-    session->client_token = data.clientToken();
     // profile name
     session->player_name = data.profileName();
     // profile ID

launcher/minecraft/auth/MinecraftAccount.h

@@ -85,13 +85,10 @@ class MinecraftAccount : public QObject, public Usable {
     //! Default constructor
     explicit MinecraftAccount(QObject* parent = 0);
 
-    static MinecraftAccountPtr createFromUsername(const QString& username);
-
     static MinecraftAccountPtr createBlankMSA();
 
     static MinecraftAccountPtr createOffline(const QString& username);
 
-    static MinecraftAccountPtr loadFromJsonV2(const QJsonObject& json);
     static MinecraftAccountPtr loadFromJsonV3(const QJsonObject& json);
 
     static QUuid uuidFromUsername(QString username);
@@ -100,12 +97,6 @@ class MinecraftAccount : public QObject, public Usable {
     QJsonObject saveToJson() const;
 
    public: /* manipulation */
-    /**
-     * Attempt to login. Empty password means we use the token.
-     * If the attempt fails because we already are performing some task, it returns false.
-     */
-    shared_qobject_ptr<AccountTask> login(QString password);
-
     shared_qobject_ptr<AccountTask> loginMSA();
 
     shared_qobject_ptr<AccountTask> loginOffline();
@@ -119,8 +110,6 @@ class MinecraftAccount : public QObject, public Usable {
 
     QString accountDisplayString() const { return data.accountDisplayString(); }
 
-    QString mojangUserName() const { return data.userName(); }
-
     QString accessToken() const { return data.accessToken(); }
 
     QString profileId() const { return data.profileId(); }
@@ -129,8 +118,6 @@ class MinecraftAccount : public QObject, public Usable {
 
     bool isActive() const;
 
-    bool canMigrate() const { return data.canMigrateToMSA; }
-
     bool isMSA() const { return data.type == AccountType::MSA; }
 
     bool isOffline() const { return data.type == AccountType::Offline; }
@@ -142,12 +129,6 @@ class MinecraftAccount : public QObject, public Usable {
     QString typeString() const
     {
         switch (data.type) {
-            case AccountType::Mojang: {
-                if (data.legacy) {
-                    return "legacy";
-                }
-                return "mojang";
-            } break;
             case AccountType::MSA: {
                 return "msa";
             } break;

launcher/minecraft/auth/Yggdrasil.cpp

@@ -1,342 +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 "Yggdrasil.h"
-#include "AccountData.h"
-
-#include <QByteArray>
-#include <QJsonDocument>
-#include <QJsonObject>
-#include <QNetworkReply>
-#include <QObject>
-#include <QString>
-
-#include <QDebug>
-
-#include "Application.h"
-
-Yggdrasil::Yggdrasil(AccountData* data, QObject* parent) : AccountTask(data, parent)
-{
-    changeState(AccountTaskState::STATE_CREATED);
-}
-
-void Yggdrasil::sendRequest(QUrl endpoint, QByteArray content)
-{
-    changeState(AccountTaskState::STATE_WORKING);
-
-    QNetworkRequest netRequest(endpoint);
-    netRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
-    m_netReply = APPLICATION->network()->post(netRequest, content);
-    connect(m_netReply, &QNetworkReply::finished, this, &Yggdrasil::processReply);
-    connect(m_netReply, &QNetworkReply::uploadProgress, this, &Yggdrasil::refreshTimers);
-    connect(m_netReply, &QNetworkReply::downloadProgress, this, &Yggdrasil::refreshTimers);
-    connect(m_netReply, &QNetworkReply::sslErrors, this, &Yggdrasil::sslErrors);
-    timeout_keeper.setSingleShot(true);
-    timeout_keeper.start(timeout_max);
-    counter.setSingleShot(false);
-    counter.start(time_step);
-    progress(0, timeout_max);
-    connect(&timeout_keeper, &QTimer::timeout, this, &Yggdrasil::abortByTimeout);
-    connect(&counter, &QTimer::timeout, this, &Yggdrasil::heartbeat);
-}
-
-void Yggdrasil::executeTask() {}
-
-void Yggdrasil::refresh()
-{
-    start();
-    /*
-     * {
-     *  "clientToken": "client identifier"
-     *  "accessToken": "current access token to be refreshed"
-     *  "selectedProfile":                      // specifying this causes errors
-     *  {
-     *   "id": "profile ID"
-     *   "name": "profile name"
-     *  }
-     *  "requestUser": true/false               // request the user structure
-     * }
-     */
-    QJsonObject req;
-    req.insert("clientToken", m_data->clientToken());
-    req.insert("accessToken", m_data->accessToken());
-    /*
-    {
-        auto currentProfile = m_account->currentProfile();
-        QJsonObject profile;
-        profile.insert("id", currentProfile->id());
-        profile.insert("name", currentProfile->name());
-        req.insert("selectedProfile", profile);
-    }
-    */
-    req.insert("requestUser", false);
-    QJsonDocument doc(req);
-
-    QUrl reqUrl("https://authserver.mojang.com/refresh");
-    QByteArray requestData = doc.toJson();
-
-    sendRequest(reqUrl, requestData);
-}
-
-void Yggdrasil::login(QString password)
-{
-    start();
-    /*
-     * {
-     *   "agent": {                              // optional
-     *   "name": "Minecraft",                    // So far this is the only encountered value
-     *   "version": 1                            // This number might be increased
-     *                                           // by the vanilla client in the future
-     *   },
-     *   "username": "mojang account name",      // Can be an email address or player name for
-     *                                           // unmigrated accounts
-     *   "password": "mojang account password",
-     *   "clientToken": "client identifier",     // optional
-     *   "requestUser": true/false               // request the user structure
-     * }
-     */
-    QJsonObject req;
-
-    {
-        QJsonObject agent;
-        // C++ makes string literals void* for some stupid reason, so we have to tell it
-        // QString... Thanks Obama.
-        agent.insert("name", QString("Minecraft"));
-        agent.insert("version", 1);
-        req.insert("agent", agent);
-    }
-
-    req.insert("username", m_data->userName());
-    req.insert("password", password);
-    req.insert("requestUser", false);
-
-    // If we already have a client token, give it to the server.
-    // Otherwise, let the server give us one.
-
-    m_data->generateClientTokenIfMissing();
-    req.insert("clientToken", m_data->clientToken());
-
-    QJsonDocument doc(req);
-
-    QUrl reqUrl("https://authserver.mojang.com/authenticate");
-    QNetworkRequest netRequest(reqUrl);
-    QByteArray requestData = doc.toJson();
-
-    sendRequest(reqUrl, requestData);
-}
-
-void Yggdrasil::refreshTimers(qint64, qint64)
-{
-    timeout_keeper.stop();
-    timeout_keeper.start(timeout_max);
-    progress(count = 0, timeout_max);
-}
-
-void Yggdrasil::heartbeat()
-{
-    count += time_step;
-    progress(count, timeout_max);
-}
-
-bool Yggdrasil::abort()
-{
-    progress(timeout_max, timeout_max);
-    // TODO: actually use this in a meaningful way
-    m_aborted = Yggdrasil::BY_USER;
-    m_netReply->abort();
-    return true;
-}
-
-void Yggdrasil::abortByTimeout()
-{
-    progress(timeout_max, timeout_max);
-    // TODO: actually use this in a meaningful way
-    m_aborted = Yggdrasil::BY_TIMEOUT;
-    m_netReply->abort();
-}
-
-void Yggdrasil::sslErrors(QList<QSslError> errors)
-{
-    int i = 1;
-    for (auto error : errors) {
-        qCritical() << "LOGIN SSL Error #" << i << " : " << error.errorString();
-        auto cert = error.certificate();
-        qCritical() << "Certificate in question:\n" << cert.toText();
-        i++;
-    }
-}
-
-void Yggdrasil::processResponse(QJsonObject responseData)
-{
-    // Read the response data. We need to get the client token, access token, and the selected
-    // profile.
-    qDebug() << "Processing authentication response.";
-
-    // qDebug() << responseData;
-    // If we already have a client token, make sure the one the server gave us matches our
-    // existing one.
-    QString clientToken = responseData.value("clientToken").toString("");
-    if (clientToken.isEmpty()) {
-        // Fail if the server gave us an empty client token
-        changeState(AccountTaskState::STATE_FAILED_HARD, tr("Authentication server didn't send a client token."));
-        return;
-    }
-    if (m_data->clientToken().isEmpty()) {
-        m_data->setClientToken(clientToken);
-    } else if (clientToken != m_data->clientToken()) {
-        changeState(AccountTaskState::STATE_FAILED_HARD,
-                    tr("Authentication server attempted to change the client token. This isn't supported."));
-        return;
-    }
-
-    // Now, we set the access token.
-    qDebug() << "Getting access token.";
-    QString accessToken = responseData.value("accessToken").toString("");
-    if (accessToken.isEmpty()) {
-        // Fail if the server didn't give us an access token.
-        changeState(AccountTaskState::STATE_FAILED_HARD, tr("Authentication server didn't send an access token."));
-        return;
-    }
-    // Set the access token.
-    m_data->yggdrasilToken.token = accessToken;
-    m_data->yggdrasilToken.validity = Katabasis::Validity::Certain;
-    m_data->yggdrasilToken.issueInstant = QDateTime::currentDateTimeUtc();
-
-    // Get UUID here since we need it for later
-    auto profile = responseData.value("selectedProfile");
-    if (!profile.isObject()) {
-        changeState(AccountTaskState::STATE_FAILED_HARD, tr("Authentication server didn't send a selected profile."));
-        return;
-    }
-
-    auto profileObj = profile.toObject();
-    for (auto i = profileObj.constBegin(); i != profileObj.constEnd(); ++i) {
-        if (i.key() == "name" && i.value().isString()) {
-            m_data->minecraftProfile.name = i->toString();
-        } else if (i.key() == "id" && i.value().isString()) {
-            m_data->minecraftProfile.id = i->toString();
-        }
-    }
-
-    if (m_data->minecraftProfile.id.isEmpty()) {
-        changeState(AccountTaskState::STATE_FAILED_HARD, tr("Authentication server didn't send a UUID in selected profile."));
-        return;
-    }
-
-    // We've made it through the minefield of possible errors. Return true to indicate that
-    // we've succeeded.
-    qDebug() << "Finished reading authentication response.";
-    changeState(AccountTaskState::STATE_SUCCEEDED);
-}
-
-void Yggdrasil::processReply()
-{
-    changeState(AccountTaskState::STATE_WORKING);
-
-    switch (m_netReply->error()) {
-        case QNetworkReply::NoError:
-            break;
-        case QNetworkReply::TimeoutError:
-            changeState(AccountTaskState::STATE_FAILED_SOFT, tr("Authentication operation timed out."));
-            return;
-        case QNetworkReply::OperationCanceledError:
-            changeState(AccountTaskState::STATE_FAILED_SOFT, tr("Authentication operation cancelled."));
-            return;
-        case QNetworkReply::SslHandshakeFailedError:
-            changeState(AccountTaskState::STATE_FAILED_SOFT,
-                        tr("<b>SSL Handshake failed.</b><br/>There might be a few causes for it:<br/>"
-                           "<ul>"
-                           "<li>You use Windows and need to update your root certificates, please install any outstanding updates.</li>"
-                           "<li>Some device on your network is interfering with SSL traffic. In that case, "
-                           "you have bigger worries than Minecraft not starting.</li>"
-                           "<li>Possibly something else. Check the log file for details</li>"
-                           "</ul>"));
-            return;
-        // used for invalid credentials and similar errors. Fall through.
-        case QNetworkReply::ContentAccessDenied:
-        case QNetworkReply::ContentOperationNotPermittedError:
-            break;
-        case QNetworkReply::ContentGoneError: {
-            changeState(AccountTaskState::STATE_FAILED_GONE,
-                        tr("The Mojang account no longer exists. It may have been migrated to a Microsoft account."));
-            return;
-        }
-        default:
-            changeState(AccountTaskState::STATE_FAILED_SOFT, tr("Authentication operation failed due to a network error: %1 (%2)")
-                                                                 .arg(m_netReply->errorString())
-                                                                 .arg(m_netReply->error()));
-            return;
-    }
-
-    // Try to parse the response regardless of the response code.
-    // Sometimes the auth server will give more information and an error code.
-    QJsonParseError jsonError;
-    QByteArray replyData = m_netReply->readAll();
-    QJsonDocument doc = QJsonDocument::fromJson(replyData, &jsonError);
-    // Check the response code.
-    int responseCode = m_netReply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
-
-    if (responseCode == 200) {
-        // If the response code was 200, then there shouldn't be an error. Make sure
-        // anyways.
-        // Also, sometimes an empty reply indicates success. If there was no data received,
-        // pass an empty json object to the processResponse function.
-        if (jsonError.error == QJsonParseError::NoError || replyData.size() == 0) {
-            processResponse(replyData.size() > 0 ? doc.object() : QJsonObject());
-            return;
-        } else {
-            changeState(AccountTaskState::STATE_FAILED_SOFT,
-                        tr("Failed to parse authentication server response JSON response: %1 at offset %2.")
-                            .arg(jsonError.errorString())
-                            .arg(jsonError.offset));
-            qCritical() << replyData;
-        }
-        return;
-    }
-
-    // If the response code was not 200, then Yggdrasil may have given us information
-    // about the error.
-    // If we can parse the response, then get information from it. Otherwise just say
-    // there was an unknown error.
-    if (jsonError.error == QJsonParseError::NoError) {
-        // We were able to parse the server's response. Woo!
-        // Call processError. If a subclass has overridden it then they'll handle their
-        // stuff there.
-        qDebug() << "The request failed, but the server gave us an error message. Processing error.";
-        processError(doc.object());
-    } else {
-        // The server didn't say anything regarding the error. Give the user an unknown
-        // error.
-        qDebug() << "The request failed and the server gave no error message. Unknown error.";
-        changeState(
-            AccountTaskState::STATE_FAILED_SOFT,
-            tr("An unknown error occurred when trying to communicate with the authentication server: %1").arg(m_netReply->errorString()));
-    }
-}
-
-void Yggdrasil::processError(QJsonObject responseData)
-{
-    QJsonValue errorVal = responseData.value("error");
-    QJsonValue errorMessageValue = responseData.value("errorMessage");
-    QJsonValue causeVal = responseData.value("cause");
-
-    if (errorVal.isString() && errorMessageValue.isString()) {
-        m_error = std::shared_ptr<Error>(new Error{ errorVal.toString(""), errorMessageValue.toString(""), causeVal.toString("") });
-        changeState(AccountTaskState::STATE_FAILED_HARD, m_error->m_errorMessageVerbose);
-    } else {
-        // Error is not in standard format. Don't set m_error and return unknown error.
-        changeState(AccountTaskState::STATE_FAILED_HARD, tr("An unknown Yggdrasil error occurred."));
-    }
-}

launcher/minecraft/auth/Yggdrasil.h

@@ -1,92 +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 "AccountTask.h"
-
-#include <qsslerror.h>
-#include <QJsonObject>
-#include <QString>
-#include <QTimer>
-
-#include "MinecraftAccount.h"
-
-class QNetworkAccessManager;
-class QNetworkReply;
-
-/**
- * A Yggdrasil task is a task that performs an operation on a given mojang account.
- */
-class Yggdrasil : public AccountTask {
-    Q_OBJECT
-   public:
-    explicit Yggdrasil(AccountData* data, QObject* parent = 0);
-    virtual ~Yggdrasil() = default;
-
-    void refresh();
-    void login(QString password);
-
-    struct Error {
-        QString m_errorMessageShort;
-        QString m_errorMessageVerbose;
-        QString m_cause;
-    };
-    std::shared_ptr<Error> m_error;
-
-    enum AbortedBy { BY_NOTHING, BY_USER, BY_TIMEOUT } m_aborted = BY_NOTHING;
-
-   protected:
-    void executeTask() override;
-
-    /**
-     * Processes the response received from the server.
-     * If an error occurred, this should emit a failed signal.
-     * If Yggdrasil gave an error response, it should call setError() first, and then return false.
-     * Otherwise, it should return true.
-     * Note: If the response from the server was blank, and the HTTP code was 200, this function is called with
-     * an empty QJsonObject.
-     */
-    void processResponse(QJsonObject responseData);
-
-    /**
-     * Processes an error response received from the server.
-     * The default implementation will read data from Yggdrasil's standard error response format and set it as this task's Error.
-     * \returns a QString error message that will be passed to emitFailed.
-     */
-    virtual void processError(QJsonObject responseData);
-
-   protected slots:
-    void processReply();
-    void refreshTimers(qint64, qint64);
-    void heartbeat();
-    void sslErrors(QList<QSslError>);
-    void abortByTimeout();
-
-   public slots:
-    virtual bool abort() override;
-
-   private:
-    void sendRequest(QUrl endpoint, QByteArray content);
-
-   protected:
-    QNetworkReply* m_netReply = nullptr;
-    QTimer timeout_keeper;
-    QTimer counter;
-    int count = 0;  // num msec since time reset
-
-    const int timeout_max = 30000;
-    const int time_step = 50;
-};

launcher/minecraft/auth/flows/AuthFlow.h

@@ -12,7 +12,6 @@
 #include "minecraft/auth/AccountData.h"
 #include "minecraft/auth/AccountTask.h"
 #include "minecraft/auth/AuthStep.h"
-#include "minecraft/auth/Yggdrasil.h"
 
 class AuthFlow : public AccountTask {
     Q_OBJECT

launcher/minecraft/auth/flows/Mojang.cpp

@@ -1,22 +0,0 @@
-#include "Mojang.h"
-
-#include "minecraft/auth/steps/GetSkinStep.h"
-#include "minecraft/auth/steps/MigrationEligibilityStep.h"
-#include "minecraft/auth/steps/MinecraftProfileStepMojang.h"
-#include "minecraft/auth/steps/YggdrasilStep.h"
-
-MojangRefresh::MojangRefresh(AccountData* data, QObject* parent) : AuthFlow(data, parent)
-{
-    m_steps.append(makeShared<YggdrasilStep>(m_data, QString()));
-    m_steps.append(makeShared<MinecraftProfileStepMojang>(m_data));
-    m_steps.append(makeShared<MigrationEligibilityStep>(m_data));
-    m_steps.append(makeShared<GetSkinStep>(m_data));
-}
-
-MojangLogin::MojangLogin(AccountData* data, QString password, QObject* parent) : AuthFlow(data, parent), m_password(password)
-{
-    m_steps.append(makeShared<YggdrasilStep>(m_data, m_password));
-    m_steps.append(makeShared<MinecraftProfileStepMojang>(m_data));
-    m_steps.append(makeShared<MigrationEligibilityStep>(m_data));
-    m_steps.append(makeShared<GetSkinStep>(m_data));
-}

launcher/minecraft/auth/flows/Mojang.h

@@ -1,17 +0,0 @@
-#pragma once
-#include "AuthFlow.h"
-
-class MojangRefresh : public AuthFlow {
-    Q_OBJECT
-   public:
-    explicit MojangRefresh(AccountData* data, QObject* parent = 0);
-};
-
-class MojangLogin : public AuthFlow {
-    Q_OBJECT
-   public:
-    explicit MojangLogin(AccountData* data, QString password, QObject* parent = 0);
-
-   private:
-    QString m_password;
-};

launcher/minecraft/auth/steps/MigrationEligibilityStep.cpp

@@ -1,45 +0,0 @@
-#include "MigrationEligibilityStep.h"
-
-#include <QNetworkRequest>
-
-#include "minecraft/auth/AuthRequest.h"
-#include "minecraft/auth/Parsers.h"
-
-MigrationEligibilityStep::MigrationEligibilityStep(AccountData* data) : AuthStep(data) {}
-
-MigrationEligibilityStep::~MigrationEligibilityStep() noexcept = default;
-
-QString MigrationEligibilityStep::describe()
-{
-    return tr("Checking for migration eligibility.");
-}
-
-void MigrationEligibilityStep::perform()
-{
-    auto url = QUrl("https://api.minecraftservices.com/rollout/v1/msamigration");
-    QNetworkRequest request = QNetworkRequest(url);
-    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
-    request.setRawHeader("Authorization", QString("Bearer %1").arg(m_data->yggdrasilToken.token).toUtf8());
-
-    AuthRequest* requestor = new AuthRequest(this);
-    connect(requestor, &AuthRequest::finished, this, &MigrationEligibilityStep::onRequestDone);
-    requestor->get(request);
-}
-
-void MigrationEligibilityStep::rehydrate()
-{
-    // NOOP, for now. We only save bools and there's nothing to check.
-}
-
-void MigrationEligibilityStep::onRequestDone(QNetworkReply::NetworkError error,
-                                             QByteArray data,
-                                             QList<QNetworkReply::RawHeaderPair> headers)
-{
-    auto requestor = qobject_cast<AuthRequest*>(QObject::sender());
-    requestor->deleteLater();
-
-    if (error == QNetworkReply::NoError) {
-        Parsers::parseRolloutResponse(data, m_data->canMigrateToMSA);
-    }
-    emit finished(AccountTaskState::STATE_WORKING, tr("Got migration flags"));
-}

launcher/minecraft/auth/steps/MigrationEligibilityStep.h

@@ -1,21 +0,0 @@
-#pragma once
-#include <QObject>
-
-#include "QObjectPtr.h"
-#include "minecraft/auth/AuthStep.h"
-
-class MigrationEligibilityStep : public AuthStep {
-    Q_OBJECT
-
-   public:
-    explicit MigrationEligibilityStep(AccountData* data);
-    virtual ~MigrationEligibilityStep() noexcept;
-
-    void perform() override;
-    void rehydrate() override;
-
-    QString describe() override;
-
-   private slots:
-    void onRequestDone(QNetworkReply::NetworkError, QByteArray, QList<QNetworkReply::RawHeaderPair>);
-};

launcher/minecraft/auth/steps/MinecraftProfileStep.cpp

@@ -41,10 +41,6 @@ void MinecraftProfileStep::onRequestDone(QNetworkReply::NetworkError error, QByt
     qCDebug(authCredentials()) << data;
     if (error == QNetworkReply::ContentNotFoundError) {
         // NOTE: Succeed even if we do not have a profile. This is a valid account state.
-        if (m_data->type == AccountType::Mojang) {
-            m_data->minecraftEntitlement.canPlayMinecraft = false;
-            m_data->minecraftEntitlement.ownsMinecraft = false;
-        }
         m_data->minecraftProfile = MinecraftProfile();
         emit finished(AccountTaskState::STATE_SUCCEEDED, tr("Account has no Minecraft profile."));
         return;
@@ -73,10 +69,5 @@ void MinecraftProfileStep::onRequestDone(QNetworkReply::NetworkError error, QByt
         return;
     }
 
-    if (m_data->type == AccountType::Mojang) {
-        auto validProfile = m_data->minecraftProfile.validity == Katabasis::Validity::Certain;
-        m_data->minecraftEntitlement.canPlayMinecraft = validProfile;
-        m_data->minecraftEntitlement.ownsMinecraft = validProfile;
-    }
     emit finished(AccountTaskState::STATE_WORKING, tr("Minecraft Java profile acquisition succeeded."));
 }

launcher/minecraft/auth/steps/MinecraftProfileStepMojang.cpp

@@ -1,87 +0,0 @@
-#include "MinecraftProfileStepMojang.h"
-
-#include <QNetworkRequest>
-
-#include "Logging.h"
-#include "minecraft/auth/AuthRequest.h"
-#include "minecraft/auth/Parsers.h"
-#include "net/NetUtils.h"
-
-MinecraftProfileStepMojang::MinecraftProfileStepMojang(AccountData* data) : AuthStep(data) {}
-
-MinecraftProfileStepMojang::~MinecraftProfileStepMojang() noexcept = default;
-
-QString MinecraftProfileStepMojang::describe()
-{
-    return tr("Fetching the Minecraft profile.");
-}
-
-void MinecraftProfileStepMojang::perform()
-{
-    if (m_data->minecraftProfile.id.isEmpty()) {
-        emit finished(AccountTaskState::STATE_FAILED_HARD, tr("A UUID is required to get the profile."));
-        return;
-    }
-
-    // use session server instead of profile due to profile endpoint being locked for locked Mojang accounts
-    QUrl url = QUrl("https://sessionserver.mojang.com/session/minecraft/profile/" + m_data->minecraftProfile.id);
-    QNetworkRequest req = QNetworkRequest(url);
-    AuthRequest* request = new AuthRequest(this);
-    connect(request, &AuthRequest::finished, this, &MinecraftProfileStepMojang::onRequestDone);
-    request->get(req);
-}
-
-void MinecraftProfileStepMojang::rehydrate()
-{
-    // NOOP, for now. We only save bools and there's nothing to check.
-}
-
-void MinecraftProfileStepMojang::onRequestDone(QNetworkReply::NetworkError error,
-                                               QByteArray data,
-                                               QList<QNetworkReply::RawHeaderPair> headers)
-{
-    auto requestor = qobject_cast<AuthRequest*>(QObject::sender());
-    requestor->deleteLater();
-
-    qCDebug(authCredentials()) << data;
-    if (error == QNetworkReply::ContentNotFoundError) {
-        // NOTE: Succeed even if we do not have a profile. This is a valid account state.
-        if (m_data->type == AccountType::Mojang) {
-            m_data->minecraftEntitlement.canPlayMinecraft = false;
-            m_data->minecraftEntitlement.ownsMinecraft = false;
-        }
-        m_data->minecraftProfile = MinecraftProfile();
-        emit finished(AccountTaskState::STATE_SUCCEEDED, tr("Account has no Minecraft profile."));
-        return;
-    }
-    if (error != QNetworkReply::NoError) {
-        qWarning() << "Error getting profile:";
-        qWarning() << " HTTP Status:        " << requestor->httpStatus_;
-        qWarning() << " Internal error no.: " << error;
-        qWarning() << " Error string:       " << requestor->errorString_;
-
-        qWarning() << " Response:";
-        qWarning() << QString::fromUtf8(data);
-
-        if (Net::isApplicationError(error)) {
-            emit finished(AccountTaskState::STATE_FAILED_SOFT,
-                          tr("Minecraft Java profile acquisition failed: %1").arg(requestor->errorString_));
-        } else {
-            emit finished(AccountTaskState::STATE_OFFLINE,
-                          tr("Minecraft Java profile acquisition failed: %1").arg(requestor->errorString_));
-        }
-        return;
-    }
-    if (!Parsers::parseMinecraftProfileMojang(data, m_data->minecraftProfile)) {
-        m_data->minecraftProfile = MinecraftProfile();
-        emit finished(AccountTaskState::STATE_FAILED_SOFT, tr("Minecraft Java profile response could not be parsed"));
-        return;
-    }
-
-    if (m_data->type == AccountType::Mojang) {
-        auto validProfile = m_data->minecraftProfile.validity == Katabasis::Validity::Certain;
-        m_data->minecraftEntitlement.canPlayMinecraft = validProfile;
-        m_data->minecraftEntitlement.ownsMinecraft = validProfile;
-    }
-    emit finished(AccountTaskState::STATE_WORKING, tr("Minecraft Java profile acquisition succeeded."));
-}

launcher/minecraft/auth/steps/MinecraftProfileStepMojang.h

@@ -1,21 +0,0 @@
-#pragma once
-#include <QObject>
-
-#include "QObjectPtr.h"
-#include "minecraft/auth/AuthStep.h"
-
-class MinecraftProfileStepMojang : public AuthStep {
-    Q_OBJECT
-
-   public:
-    explicit MinecraftProfileStepMojang(AccountData* data);
-    virtual ~MinecraftProfileStepMojang() noexcept;
-
-    void perform() override;
-    void rehydrate() override;
-
-    QString describe() override;
-
-   private slots:
-    void onRequestDone(QNetworkReply::NetworkError, QByteArray, QList<QNetworkReply::RawHeaderPair>);
-};

launcher/minecraft/auth/steps/XboxUserStep.cpp

@@ -38,7 +38,7 @@ void XboxUserStep::perform()
     QNetworkRequest request = QNetworkRequest(QUrl("https://user.auth.xboxlive.com/user/authenticate"));
     request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
     request.setRawHeader("Accept", "application/json");
-    // set contract-verison header (prevent err 400 bad-request?)
+    // set contract-version header (prevent err 400 bad-request?)
     // https://learn.microsoft.com/en-us/gaming/gdk/_content/gc/reference/live/rest/additional/httpstandardheaders
     request.setRawHeader("x-xbl-contract-version", "1");
 

launcher/minecraft/auth/steps/YggdrasilStep.cpp

@@ -1,57 +0,0 @@
-#include "YggdrasilStep.h"
-
-#include "minecraft/auth/AuthRequest.h"
-#include "minecraft/auth/Parsers.h"
-#include "minecraft/auth/Yggdrasil.h"
-
-YggdrasilStep::YggdrasilStep(AccountData* data, QString password) : AuthStep(data), m_password(password)
-{
-    m_yggdrasil = new Yggdrasil(m_data, this);
-
-    connect(m_yggdrasil, &Task::failed, this, &YggdrasilStep::onAuthFailed);
-    connect(m_yggdrasil, &Task::succeeded, this, &YggdrasilStep::onAuthSucceeded);
-    connect(m_yggdrasil, &Task::aborted, this, &YggdrasilStep::onAuthFailed);
-}
-
-YggdrasilStep::~YggdrasilStep() noexcept = default;
-
-QString YggdrasilStep::describe()
-{
-    return tr("Logging in with Mojang account.");
-}
-
-void YggdrasilStep::rehydrate()
-{
-    // NOOP, for now.
-}
-
-void YggdrasilStep::perform()
-{
-    if (m_password.size()) {
-        m_yggdrasil->login(m_password);
-    } else {
-        m_yggdrasil->refresh();
-    }
-}
-
-void YggdrasilStep::onAuthSucceeded()
-{
-    emit finished(AccountTaskState::STATE_WORKING, tr("Logged in with Mojang"));
-}
-
-void YggdrasilStep::onAuthFailed()
-{
-    // TODO: hook these in again, expand to MSA
-    // m_error = m_yggdrasil->m_error;
-    // m_aborted = m_yggdrasil->m_aborted;
-
-    auto state = m_yggdrasil->taskState();
-    QString errorMessage = tr("Mojang user authentication failed.");
-
-    // NOTE: soft error in the first step means 'offline'
-    if (state == AccountTaskState::STATE_FAILED_SOFT) {
-        state = AccountTaskState::STATE_OFFLINE;
-        errorMessage = tr("Mojang user authentication ended with a network error.");
-    }
-    emit finished(state, errorMessage);
-}

launcher/minecraft/auth/steps/YggdrasilStep.h

@@ -1,28 +0,0 @@
-#pragma once
-#include <QObject>
-
-#include "QObjectPtr.h"
-#include "minecraft/auth/AuthStep.h"
-
-class Yggdrasil;
-
-class YggdrasilStep : public AuthStep {
-    Q_OBJECT
-
-   public:
-    explicit YggdrasilStep(AccountData* data, QString password);
-    virtual ~YggdrasilStep() noexcept;
-
-    void perform() override;
-    void rehydrate() override;
-
-    QString describe() override;
-
-   private slots:
-    void onAuthSucceeded();
-    void onAuthFailed();
-
-   private:
-    Yggdrasil* m_yggdrasil = nullptr;
-    QString m_password;
-};

launcher/minecraft/launch/LauncherPartLaunch.cpp

@@ -105,6 +105,17 @@ void LauncherPartLaunch::executeTask()
     auto instance = m_parent->instance();
     std::shared_ptr<MinecraftInstance> minecraftInstance = std::dynamic_pointer_cast<MinecraftInstance>(instance);
 
+    QString legacyJarPath;
+    if (minecraftInstance->getLauncher() == "legacy" || minecraftInstance->shouldApplyOnlineFixes()) {
+        legacyJarPath = APPLICATION->getJarPath("NewLaunchLegacy.jar");
+        if (legacyJarPath.isEmpty()) {
+            const char* reason = QT_TR_NOOP("Legacy launcher library could not be found. Please check your installation.");
+            emit logLine(tr(reason), MessageLevel::Fatal);
+            emitFailed(tr(reason));
+            return;
+        }
+    }
+
     m_launchScript = minecraftInstance->createLaunchScript(m_session, m_serverToJoin);
     QStringList args = minecraftInstance->javaArguments();
     QString allArgs = args.join(", ");
@@ -120,6 +131,9 @@ void LauncherPartLaunch::executeTask()
     auto classPath = minecraftInstance->getClassPath();
     classPath.prepend(jarPath);
 
+    if (!legacyJarPath.isEmpty())
+        classPath.prepend(legacyJarPath);
+
     auto natPath = minecraftInstance->getNativePath();
 #ifdef Q_OS_WIN
     if (!fitsInLocal8bit(natPath)) {

launcher/minecraft/mod/DataPack.cpp

@@ -28,7 +28,7 @@
 #include "Version.h"
 
 // Values taken from:
-// https://minecraft.fandom.com/wiki/Tutorials/Creating_a_data_pack#%22pack_format%22
+// https://minecraft.wiki/w/Tutorials/Creating_a_data_pack#%22pack_format%22
 static const QMap<int, std::pair<Version, Version>> s_pack_format_versions = {
     { 4, { Version("1.13"), Version("1.14.4") } },    { 5, { Version("1.15"), Version("1.16.1") } },
     { 6, { Version("1.16.2"), Version("1.16.5") } },  { 7, { Version("1.17"), Version("1.17.1") } },

launcher/minecraft/mod/DataPack.h

@@ -63,7 +63,7 @@ class DataPack : public Resource {
     mutable QMutex m_data_lock;
 
     /* The 'version' of a data pack, as defined in the pack.mcmeta file.
-     * See https://minecraft.fandom.com/wiki/Data_pack#pack.mcmeta
+     * See https://minecraft.wiki/w/Data_pack#pack.mcmeta
      */
     int m_pack_format = 0;
 

launcher/minecraft/mod/MetadataHandler.h

@@ -31,6 +31,7 @@ class Mod;
 class Metadata {
    public:
     using ModStruct = Packwiz::V1::Mod;
+    using ModSide = Packwiz::V1::Side;
 
     static auto create(QDir& index_dir, ModPlatform::IndexedPack& mod_pack, ModPlatform::IndexedVersion& mod_version) -> ModStruct
     {

launcher/minecraft/mod/Mod.cpp

@@ -132,17 +132,23 @@ auto Mod::destroy(QDir& index_dir, bool preserve_metadata, bool attempt_trash) -
     if (!preserve_metadata) {
         qDebug() << QString("Destroying metadata for '%1' on purpose").arg(name());
 
-        if (metadata()) {
+        destroyMetadata(index_dir);
-            Metadata::remove(index_dir, metadata()->slug);
-        } else {
-            auto n = name();
-            Metadata::remove(index_dir, n);
-        }
     }
 
     return Resource::destroy(attempt_trash);
 }
 
+void Mod::destroyMetadata(QDir& index_dir)
+{
+    if (metadata()) {
+        Metadata::remove(index_dir, metadata()->slug);
+    } else {
+        auto n = name();
+        Metadata::remove(index_dir, n);
+    }
+    m_local_details.metadata = nullptr;
+}
+
 auto Mod::details() const -> const ModDetails&
 {
     return m_local_details;
@@ -246,7 +252,8 @@ void Mod::setIcon(QImage new_image) const
         PixmapCache::remove(m_pack_image_cache_key.key);
 
     // scale the image to avoid flooding the pixmapcache
-    auto pixmap = QPixmap::fromImage(new_image.scaled({ 64, 64 }, Qt::AspectRatioMode::KeepAspectRatioByExpanding));
+    auto pixmap =
+        QPixmap::fromImage(new_image.scaled({ 64, 64 }, Qt::AspectRatioMode::KeepAspectRatioByExpanding, Qt::SmoothTransformation));
 
     m_pack_image_cache_key.key = PixmapCache::insert(pixmap);
     m_pack_image_cache_key.was_ever_used = true;
@@ -259,7 +266,7 @@ QPixmap Mod::icon(QSize size, Qt::AspectRatioMode mode) const
     if (PixmapCache::find(m_pack_image_cache_key.key, &cached_image)) {
         if (size.isNull())
             return cached_image;
-        return cached_image.scaled(size, mode);
+        return cached_image.scaled(size, mode, Qt::SmoothTransformation);
     }
 
     // No valid image we can get

launcher/minecraft/mod/Mod.h

@@ -93,6 +93,8 @@ class Mod : public Resource {
 
     // Delete all the files of this mod
     auto destroy(QDir& index_dir, bool preserve_metadata = false, bool attempt_trash = true) -> bool;
+    // Delete the metadata only
+    void destroyMetadata(QDir& index_dir);
 
     void finishResolvingWithDetails(ModDetails&& details);
 

launcher/minecraft/mod/ModFolderModel.cpp

@@ -51,8 +51,13 @@
 
 #include "Application.h"
 
+#include "Json.h"
 #include "minecraft/mod/tasks/LocalModParseTask.h"
+#include "minecraft/mod/tasks/LocalModUpdateTask.h"
 #include "minecraft/mod/tasks/ModFolderLoadTask.h"
+#include "modplatform/ModIndex.h"
+#include "modplatform/flame/FlameAPI.h"
+#include "modplatform/flame/FlameModIndex.h"
 
 ModFolderModel::ModFolderModel(const QString& dir, BaseInstance* instance, bool is_indexed, bool create_dir)
     : ResourceFolderModel(QDir(dir), instance, nullptr, create_dir), m_is_indexed(is_indexed)
@@ -228,6 +233,25 @@ bool ModFolderModel::deleteMods(const QModelIndexList& indexes)
     return true;
 }
 
+bool ModFolderModel::deleteModsMetadata(const QModelIndexList& indexes)
+{
+    if (indexes.isEmpty())
+        return true;
+
+    for (auto i : indexes) {
+        if (i.column() != 0) {
+            continue;
+        }
+        auto m = at(i.row());
+        auto index_dir = indexDir();
+        m->destroyMetadata(index_dir);
+    }
+
+    update();
+
+    return true;
+}
+
 bool ModFolderModel::isValid()
 {
     return m_dir.exists() && m_dir.isReadable();
@@ -309,3 +333,47 @@ void ModFolderModel::onParseSucceeded(int ticket, QString mod_id)
 
     emit dataChanged(index(row), index(row, columnCount(QModelIndex()) - 1));
 }
+
+static const FlameAPI flameAPI;
+bool ModFolderModel::installMod(QString file_path, ModPlatform::IndexedVersion& vers)
+{
+    if (vers.addonId.isValid()) {
+        ModPlatform::IndexedPack pack{
+            vers.addonId,
+            ModPlatform::ResourceProvider::FLAME,
+        };
+
+        QEventLoop loop;
+
+        auto response = std::make_shared<QByteArray>();
+        auto job = flameAPI.getProject(vers.addonId.toString(), response);
+
+        QObject::connect(job.get(), &Task::failed, [&loop] { loop.quit(); });
+        QObject::connect(job.get(), &Task::aborted, &loop, &QEventLoop::quit);
+        QObject::connect(job.get(), &Task::succeeded, [response, this, &vers, &loop, &pack] {
+            QJsonParseError parse_error{};
+            QJsonDocument doc = QJsonDocument::fromJson(*response, &parse_error);
+            if (parse_error.error != QJsonParseError::NoError) {
+                qWarning() << "Error while parsing JSON response for mod info at " << parse_error.offset
+                           << " reason: " << parse_error.errorString();
+                qDebug() << *response;
+                return;
+            }
+            try {
+                auto obj = Json::requireObject(Json::requireObject(doc), "data");
+                FlameMod::loadIndexedPack(pack, obj);
+            } catch (const JSONValidationError& e) {
+                qDebug() << doc;
+                qWarning() << "Error while reading mod info: " << e.cause();
+            }
+            LocalModUpdateTask update_metadata(indexDir(), pack, vers);
+            QObject::connect(&update_metadata, &Task::finished, &loop, &QEventLoop::quit);
+            update_metadata.start();
+        });
+
+        job->start();
+
+        loop.exec();
+    }
+    return ResourceFolderModel::installResource(file_path);
+}

launcher/minecraft/mod/ModFolderModel.h

@@ -48,6 +48,7 @@
 
 #include "minecraft/mod/tasks/LocalModParseTask.h"
 #include "minecraft/mod/tasks/ModFolderLoadTask.h"
+#include "modplatform/ModIndex.h"
 
 class LegacyInstance;
 class BaseInstance;
@@ -75,10 +76,12 @@ class ModFolderModel : public ResourceFolderModel {
     [[nodiscard]] Task* createParseTask(Resource&) override;
 
     bool installMod(QString file_path) { return ResourceFolderModel::installResource(file_path); }
+    bool installMod(QString file_path, ModPlatform::IndexedVersion& vers);
     bool uninstallMod(const QString& filename, bool preserve_metadata = false);
 
     /// Deletes all the selected mods
     bool deleteMods(const QModelIndexList& indexes);
+    bool deleteModsMetadata(const QModelIndexList& indexes);
 
     bool isValid();
 

launcher/minecraft/mod/ResourceFolderModel.cpp

@@ -33,6 +33,10 @@ ResourceFolderModel::ResourceFolderModel(QDir dir, BaseInstance* instance, QObje
 
     connect(&m_watcher, &QFileSystemWatcher::directoryChanged, this, &ResourceFolderModel::directoryChanged);
     connect(&m_helper_thread_task, &ConcurrentTask::finished, this, [this] { m_helper_thread_task.clear(); });
+#ifndef LAUNCHER_TEST
+    // in tests the application macro doesn't work
+    m_helper_thread_task.setMaxConcurrent(APPLICATION->settings()->get("NumberOfConcurrentTasks").toInt());
+#endif
 }
 
 ResourceFolderModel::~ResourceFolderModel()

launcher/minecraft/mod/ResourceFolderModel.h

@@ -330,7 +330,8 @@ void ResourceFolderModel::applyUpdates(QSet<QString>& current_set, QSet<QString>
 
         // When you have a Qt build with assertions turned on, proceeding here will abort the application
         if (added_set.size() > 0) {
-            beginInsertRows(QModelIndex(), m_resources.size(), m_resources.size() + added_set.size() - 1);
+            beginInsertRows(QModelIndex(), static_cast<int>(m_resources.size()),
+                            static_cast<int>(m_resources.size() + added_set.size() - 1));
 
             for (auto& added : added_set) {
                 auto res = new_resources[added];

launcher/minecraft/mod/ResourcePack.cpp

@@ -11,7 +11,7 @@
 #include "minecraft/mod/tasks/LocalResourcePackParseTask.h"
 
 // Values taken from:
-// https://minecraft.fandom.com/wiki/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
+// https://minecraft.wiki/w/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
 static const QMap<int, std::pair<Version, Version>> s_pack_format_versions = {
     { 1, { Version("1.6.1"), Version("1.8.9") } },    { 2, { Version("1.9"), Version("1.10.2") } },
     { 3, { Version("1.11"), Version("1.12.2") } },    { 4, { Version("1.13"), Version("1.14.4") } },
@@ -50,7 +50,8 @@ void ResourcePack::setImage(QImage new_image) const
         PixmapCache::instance().remove(m_pack_image_cache_key.key);
 
     // scale the image to avoid flooding the pixmapcache
-    auto pixmap = QPixmap::fromImage(new_image.scaled({ 64, 64 }, Qt::AspectRatioMode::KeepAspectRatioByExpanding));
+    auto pixmap =
+        QPixmap::fromImage(new_image.scaled({ 64, 64 }, Qt::AspectRatioMode::KeepAspectRatioByExpanding, Qt::SmoothTransformation));
 
     m_pack_image_cache_key.key = PixmapCache::instance().insert(pixmap);
     m_pack_image_cache_key.was_ever_used = true;
@@ -68,7 +69,7 @@ QPixmap ResourcePack::image(QSize size, Qt::AspectRatioMode mode) const
     if (PixmapCache::instance().find(m_pack_image_cache_key.key, &cached_image)) {
         if (size.isNull())
             return cached_image;
-        return cached_image.scaled(size, mode);
+        return cached_image.scaled(size, mode, Qt::SmoothTransformation);
     }
 
     // No valid image we can get

launcher/minecraft/mod/ResourcePack.h

@@ -51,7 +51,7 @@ class ResourcePack : public Resource {
     mutable QMutex m_data_lock;
 
     /* The 'version' of a resource pack, as defined in the pack.mcmeta file.
-     * See https://minecraft.fandom.com/wiki/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
+     * See https://minecraft.wiki/w/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
      */
     int m_pack_format = 0;
 

launcher/minecraft/mod/ShaderPack.cpp

@@ -22,7 +22,7 @@
 
 #include "ShaderPack.h"
 
-#include "minecraft/mod/tasks/LocalShaderPackParseTask.h"
+#include <QRegularExpression>
 
 void ShaderPack::setPackFormat(ShaderPackFormat new_format)
 {
@@ -35,3 +35,8 @@ bool ShaderPack::valid() const
 {
     return m_pack_format != ShaderPackFormat::INVALID;
 }
+
+bool ShaderPack::applyFilter(QRegularExpression filter) const
+{
+    return valid() && Resource::applyFilter(filter);
+}

launcher/minecraft/mod/ShaderPack.h

@@ -54,6 +54,7 @@ class ShaderPack : public Resource {
     void setPackFormat(ShaderPackFormat new_format);
 
     bool valid() const override;
+    [[nodiscard]] bool applyFilter(QRegularExpression filter) const override;
 
    protected:
     mutable QMutex m_data_lock;

launcher/minecraft/mod/ShaderPackFolderModel.h

@@ -1,6 +1,9 @@
 #pragma once
 
 #include "ResourceFolderModel.h"
+#include "minecraft/mod/ShaderPack.h"
+#include "minecraft/mod/tasks/BasicFolderLoadTask.h"
+#include "minecraft/mod/tasks/LocalShaderPackParseTask.h"
 
 class ShaderPackFolderModel : public ResourceFolderModel {
     Q_OBJECT
@@ -9,4 +12,14 @@ class ShaderPackFolderModel : public ResourceFolderModel {
     explicit ShaderPackFolderModel(const QString& dir, BaseInstance* instance) : ResourceFolderModel(QDir(dir), instance) {}
 
     virtual QString id() const override { return "shaderpacks"; }
+
+    [[nodiscard]] Task* createUpdateTask() override
+    {
+        return new BasicFolderLoadTask(m_dir, [](QFileInfo const& entry) { return makeShared<ShaderPack>(entry); });
+    }
+
+    [[nodiscard]] Task* createParseTask(Resource& resource) override
+    {
+        return new LocalShaderPackParseTask(m_next_resolution_ticket, static_cast<ShaderPack&>(resource));
+    }
 };

launcher/minecraft/mod/TexturePack.cpp

@@ -44,7 +44,8 @@ void TexturePack::setImage(QImage new_image) const
         PixmapCache::remove(m_pack_image_cache_key.key);
 
     // scale the image to avoid flooding the pixmapcache
-    auto pixmap = QPixmap::fromImage(new_image.scaled({ 64, 64 }, Qt::AspectRatioMode::KeepAspectRatioByExpanding));
+    auto pixmap =
+        QPixmap::fromImage(new_image.scaled({ 64, 64 }, Qt::AspectRatioMode::KeepAspectRatioByExpanding, Qt::SmoothTransformation));
 
     m_pack_image_cache_key.key = PixmapCache::insert(pixmap);
     m_pack_image_cache_key.was_ever_used = true;
@@ -56,7 +57,7 @@ QPixmap TexturePack::image(QSize size, Qt::AspectRatioMode mode) const
     if (PixmapCache::find(m_pack_image_cache_key.key, &cached_image)) {
         if (size.isNull())
             return cached_image;
-        return cached_image.scaled(size, mode);
+        return cached_image.scaled(size, mode, Qt::SmoothTransformation);
     }
 
     // No valid image we can get

launcher/minecraft/mod/tasks/GetModDependenciesTask.cpp

@@ -39,9 +39,9 @@ static Version mcVersion(BaseInstance* inst)
     return static_cast<MinecraftInstance*>(inst)->getPackProfile()->getComponent("net.minecraft")->getVersion();
 }
 
-static ResourceAPI::ModLoaderTypes mcLoaders(BaseInstance* inst)
+static ModPlatform::ModLoaderTypes mcLoaders(BaseInstance* inst)
 {
-    return static_cast<MinecraftInstance*>(inst)->getPackProfile()->getModLoaders().value();
+    return static_cast<MinecraftInstance*>(inst)->getPackProfile()->getSupportedModLoaders().value();
 }
 
 GetModDependenciesTask::GetModDependenciesTask(QObject* parent,
@@ -75,7 +75,7 @@ void GetModDependenciesTask::prepare()
 ModPlatform::Dependency GetModDependenciesTask::getOverride(const ModPlatform::Dependency& dep,
                                                             const ModPlatform::ResourceProvider providerName)
 {
-    if (auto isQuilt = m_loaderType & ResourceAPI::Quilt; isQuilt || m_loaderType & ResourceAPI::Fabric) {
+    if (auto isQuilt = m_loaderType & ModPlatform::Quilt; isQuilt || m_loaderType & ModPlatform::Fabric) {
         auto overide = ModPlatform::getOverrideDeps();
         auto over = std::find_if(overide.cbegin(), overide.cend(), [dep, providerName, isQuilt](auto o) {
             return o.provider == providerName && dep.addonId == (isQuilt ? o.fabric : o.quilt);
@@ -94,7 +94,7 @@ QList<ModPlatform::Dependency> GetModDependenciesTask::getDependenciesForVersion
     for (auto ver_dep : version.dependencies) {
         if (ver_dep.type != ModPlatform::DependencyType::REQUIRED)
             continue;
-
+        ver_dep = getOverride(ver_dep, providerName);
         auto isOnlyVersion = providerName == ModPlatform::ResourceProvider::MODRINTH && ver_dep.addonId.toString().isEmpty();
         if (auto dep = std::find_if(c_dependencies.begin(), c_dependencies.end(),
                                     [&ver_dep, isOnlyVersion](const ModPlatform::Dependency& i) {
@@ -127,7 +127,7 @@ QList<ModPlatform::Dependency> GetModDependenciesTask::getDependenciesForVersion
             dep != m_pack_dependencies.end())  // check loaded dependencies
             continue;
 
-        c_dependencies.append(getOverride(ver_dep, providerName));
+        c_dependencies.append(ver_dep);
     }
     return c_dependencies;
 }
@@ -191,7 +191,7 @@ Task::Ptr GetModDependenciesTask::prepareDependencyTask(const ModPlatform::Depen
             }
             pDep->version = provider.mod->loadDependencyVersions(dep, arr);
             if (!pDep->version.addonId.isValid()) {
-                if (m_loaderType & ResourceAPI::Quilt) {  // falback for quilt
+                if (m_loaderType & ModPlatform::Quilt) {  // falback for quilt
                     auto overide = ModPlatform::getOverrideDeps();
                     auto over = std::find_if(overide.cbegin(), overide.cend(),
                                              [dep, provider](auto o) { return o.provider == provider.name && dep.addonId == o.quilt; });
@@ -201,6 +201,7 @@ Task::Ptr GetModDependenciesTask::prepareDependencyTask(const ModPlatform::Depen
                         return;
                     }
                 }
+                removePack(dep.addonId);
                 qWarning() << "Error while reading mod version empty ";
                 qDebug() << doc;
                 return;
@@ -250,3 +251,32 @@ void GetModDependenciesTask::removePack(const QVariant addonId)
             ++it;
 #endif
 }
+
+QHash<QString, QStringList> GetModDependenciesTask::getRequiredBy()
+{
+    QHash<QString, QStringList> rby;
+    auto fullList = m_selected + m_pack_dependencies;
+    for (auto& mod : fullList) {
+        auto addonId = mod->pack->addonId;
+        auto provider = mod->pack->provider;
+        auto version = mod->version.fileId;
+        auto req = QStringList();
+        for (auto& smod : fullList) {
+            if (provider != smod->pack->provider)
+                continue;
+            auto deps = smod->version.dependencies;
+            if (auto dep = std::find_if(deps.begin(), deps.end(),
+                                        [addonId, provider, version](const ModPlatform::Dependency& d) {
+                                            return d.type == ModPlatform::DependencyType::REQUIRED &&
+                                                   (provider == ModPlatform::ResourceProvider::MODRINTH && d.addonId.toString().isEmpty()
+                                                        ? version == d.version
+                                                        : d.addonId == addonId);
+                                        });
+                dep != deps.end()) {
+                req.append(smod->pack->name);
+            }
+        }
+        rby[addonId.toString()] = req;
+    }
+    return rby;
+}

launcher/minecraft/mod/tasks/GetModDependenciesTask.h

@@ -62,6 +62,7 @@ class GetModDependenciesTask : public SequentialTask {
                                     QList<std::shared_ptr<PackDependency>> selected);
 
     auto getDependecies() const -> QList<std::shared_ptr<PackDependency>> { return m_pack_dependencies; }
+    QHash<QString, QStringList> getRequiredBy();
 
    protected slots:
     Task::Ptr prepareDependencyTask(const ModPlatform::Dependency&, const ModPlatform::ResourceProvider, int);
@@ -80,5 +81,5 @@ class GetModDependenciesTask : public SequentialTask {
     Provider m_modrinth_provider;
 
     Version m_version;
-    ResourceAPI::ModLoaderTypes m_loaderType;
+    ModPlatform::ModLoaderTypes m_loaderType;
 };

launcher/minecraft/mod/tasks/LocalDataPackParseTask.cpp

@@ -133,7 +133,7 @@ bool processZIP(DataPack& pack, ProcessingLevel level)
     return true;
 }
 
-// https://minecraft.fandom.com/wiki/Data_pack#pack.mcmeta
+// https://minecraft.wiki/w/Data_pack#pack.mcmeta
 bool processMCMeta(DataPack& pack, QByteArray&& raw_data)
 {
     try {

launcher/minecraft/mod/tasks/LocalResourcePackParseTask.cpp

@@ -178,7 +178,7 @@ bool processZIP(ResourcePack& pack, ProcessingLevel level)
     return true;
 }
 
-// https://minecraft.fandom.com/wiki/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
+// https://minecraft.wiki/w/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
 bool processMCMeta(ResourcePack& pack, QByteArray&& raw_data)
 {
     try {

launcher/minecraft/mod/tasks/ModFolderLoadTask.cpp

@@ -122,7 +122,7 @@ void ModFolderLoadTask::getFromMetadata()
         auto metadata = Metadata::get(m_index_dir, entry);
 
         if (!metadata.isValid()) {
-            return;
+            continue;
         }
 
         auto* mod = new Mod(m_mods_dir, metadata);

launcher/modplatform/CheckUpdateTask.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "minecraft/mod/Mod.h"
+#include "minecraft/mod/tasks/GetModDependenciesTask.h"
 #include "modplatform/ModIndex.h"
 #include "modplatform/ResourceAPI.h"
 #include "tasks/Task.h"
@@ -14,7 +15,7 @@ class CheckUpdateTask : public Task {
    public:
     CheckUpdateTask(QList<Mod*>& mods,
                     std::list<Version>& mcVersions,
-                    std::optional<ResourceAPI::ModLoaderTypes> loaders,
+                    std::optional<ModPlatform::ModLoaderTypes> loaders,
                     std::shared_ptr<ModFolderModel> mods_folder)
         : Task(nullptr), m_mods(mods), m_game_versions(mcVersions), m_loaders(loaders), m_mods_folder(mods_folder){};
 
@@ -23,6 +24,7 @@ class CheckUpdateTask : public Task {
         QString old_hash;
         QString old_version;
         QString new_version;
+        std::optional<ModPlatform::IndexedVersionType> new_version_type;
         QString changelog;
         ModPlatform::ResourceProvider provider;
         shared_qobject_ptr<ResourceDownloadTask> download;
@@ -32,14 +34,23 @@ class CheckUpdateTask : public Task {
                      QString old_h,
                      QString old_v,
                      QString new_v,
+                     std::optional<ModPlatform::IndexedVersionType> new_v_type,
                      QString changelog,
                      ModPlatform::ResourceProvider p,
                      shared_qobject_ptr<ResourceDownloadTask> t)
-            : name(name), old_hash(old_h), old_version(old_v), new_version(new_v), changelog(changelog), provider(p), download(t)
+            : name(name)
+            , old_hash(old_h)
+            , old_version(old_v)
+            , new_version(new_v)
+            , new_version_type(new_v_type)
+            , changelog(changelog)
+            , provider(p)
+            , download(t)
         {}
     };
 
     auto getUpdatable() -> std::vector<UpdatableMod>&& { return std::move(m_updatable); }
+    auto getDependencies() -> QList<std::shared_ptr<GetModDependenciesTask::PackDependency>>&& { return std::move(m_deps); }
 
    public slots:
     bool abort() override = 0;
@@ -53,8 +64,9 @@ class CheckUpdateTask : public Task {
    protected:
     QList<Mod*>& m_mods;
     std::list<Version>& m_game_versions;
-    std::optional<ResourceAPI::ModLoaderTypes> m_loaders;
+    std::optional<ModPlatform::ModLoaderTypes> m_loaders;
     std::shared_ptr<ModFolderModel> m_mods_folder;
 
     std::vector<UpdatableMod> m_updatable;
+    QList<std::shared_ptr<GetModDependenciesTask::PackDependency>> m_deps;
 };

launcher/modplatform/EnsureMetadataTask.cpp

@@ -3,6 +3,7 @@
 #include <MurmurHash2.h>
 #include <QDebug>
 
+#include "Application.h"
 #include "Json.h"
 
 #include "minecraft/mod/Mod.h"
@@ -33,7 +34,7 @@ EnsureMetadataTask::EnsureMetadataTask(Mod* mod, QDir dir, ModPlatform::Resource
 EnsureMetadataTask::EnsureMetadataTask(QList<Mod*>& mods, QDir dir, ModPlatform::ResourceProvider prov)
     : Task(nullptr), m_index_dir(dir), m_provider(prov), m_current_task(nullptr)
 {
-    m_hashing_task.reset(new ConcurrentTask(this, "MakeHashesTask", 10));
+    m_hashing_task.reset(new ConcurrentTask(this, "MakeHashesTask", APPLICATION->settings()->get("NumberOfConcurrentTasks").toInt()));
     for (auto* mod : mods) {
         auto hash_task = createNewHash(mod);
         if (!hash_task)

launcher/modplatform/ModIndex.cpp

@@ -24,6 +24,40 @@
 
 namespace ModPlatform {
 
+static const QMap<QString, IndexedVersionType::VersionType> s_indexed_version_type_names = {
+    { "release", IndexedVersionType::VersionType::Release },
+    { "beta", IndexedVersionType::VersionType::Beta },
+    { "alpha", IndexedVersionType::VersionType::Alpha }
+};
+
+IndexedVersionType::IndexedVersionType(const QString& type) : IndexedVersionType(enumFromString(type)) {}
+
+IndexedVersionType::IndexedVersionType(const IndexedVersionType::VersionType& type)
+{
+    m_type = type;
+}
+
+IndexedVersionType::IndexedVersionType(const IndexedVersionType& other)
+{
+    m_type = other.m_type;
+}
+
+IndexedVersionType& IndexedVersionType::operator=(const IndexedVersionType& other)
+{
+    m_type = other.m_type;
+    return *this;
+}
+
+const QString IndexedVersionType::toString(const IndexedVersionType::VersionType& type)
+{
+    return s_indexed_version_type_names.key(type, "unknown");
+}
+
+IndexedVersionType::VersionType IndexedVersionType::enumFromString(const QString& type)
+{
+    return s_indexed_version_type_names.value(type, IndexedVersionType::VersionType::Unknown);
+}
+
 auto ProviderCapabilities::name(ResourceProvider p) -> const char*
 {
     switch (p) {
@@ -83,4 +117,25 @@ QString getMetaURL(ResourceProvider provider, QVariant projectID)
            projectID.toString();
 }
 
+auto getModLoaderString(ModLoaderType type) -> const QString
+{
+    switch (type) {
+        case NeoForge:
+            return "neoforge";
+        case Forge:
+            return "forge";
+        case Cauldron:
+            return "cauldron";
+        case LiteLoader:
+            return "liteloader";
+        case Fabric:
+            return "fabric";
+        case Quilt:
+            return "quilt";
+        default:
+            break;
+    }
+    return "";
+}
+
 }  // namespace ModPlatform

launcher/modplatform/ModIndex.h

@@ -25,11 +25,15 @@
 #include <QVariant>
 #include <QVector>
 #include <memory>
+#include <optional>
 
 class QIODevice;
 
 namespace ModPlatform {
 
+enum ModLoaderType { NeoForge = 1 << 0, Forge = 1 << 1, Cauldron = 1 << 2, LiteLoader = 1 << 3, Fabric = 1 << 4, Quilt = 1 << 5 };
+Q_DECLARE_FLAGS(ModLoaderTypes, ModLoaderType)
+
 enum class ResourceProvider { MODRINTH, FLAME };
 
 enum class ResourceType { MOD, RESOURCE_PACK, SHADER_PACK };
@@ -55,6 +59,34 @@ struct DonationData {
     QString url;
 };
 
+struct IndexedVersionType {
+    enum class VersionType { Release = 1, Beta, Alpha, Unknown };
+    IndexedVersionType(const QString& type);
+    IndexedVersionType(const IndexedVersionType::VersionType& type);
+    IndexedVersionType(const IndexedVersionType& type);
+    IndexedVersionType() : IndexedVersionType(IndexedVersionType::VersionType::Unknown) {}
+    static const QString toString(const IndexedVersionType::VersionType& type);
+    static IndexedVersionType::VersionType enumFromString(const QString& type);
+    bool isValid() const { return m_type != IndexedVersionType::VersionType::Unknown; }
+    IndexedVersionType& operator=(const IndexedVersionType& other);
+    bool operator==(const IndexedVersionType& other) const { return m_type == other.m_type; }
+    bool operator==(const IndexedVersionType::VersionType& type) const { return m_type == type; }
+    bool operator!=(const IndexedVersionType& other) const { return m_type != other.m_type; }
+    bool operator!=(const IndexedVersionType::VersionType& type) const { return m_type != type; }
+    bool operator<(const IndexedVersionType& other) const { return m_type < other.m_type; }
+    bool operator<(const IndexedVersionType::VersionType& type) const { return m_type < type; }
+    bool operator<=(const IndexedVersionType& other) const { return m_type <= other.m_type; }
+    bool operator<=(const IndexedVersionType::VersionType& type) const { return m_type <= type; }
+    bool operator>(const IndexedVersionType& other) const { return m_type > other.m_type; }
+    bool operator>(const IndexedVersionType::VersionType& type) const { return m_type > type; }
+    bool operator>=(const IndexedVersionType& other) const { return m_type >= other.m_type; }
+    bool operator>=(const IndexedVersionType::VersionType& type) const { return m_type >= type; }
+
+    QString toString() const { return toString(m_type); }
+
+    IndexedVersionType::VersionType m_type;
+};
+
 struct Dependency {
     QVariant addonId;
     DependencyType type;
@@ -66,11 +98,12 @@ struct IndexedVersion {
     QVariant fileId;
     QString version;
     QString version_number = {};
+    IndexedVersionType version_type;
     QStringList mcVersion;
     QString downloadUrl;
     QString date;
     QString fileName;
-    QStringList loaders = {};
+    ModLoaderTypes loaders = {};
     QString hash_type;
     QString hash;
     bool is_preferred = true;
@@ -104,6 +137,7 @@ struct IndexedPack {
     QString logoName;
     QString logoUrl;
     QString websiteUrl;
+    QString side;
 
     bool versionsLoaded = false;
     QVector<IndexedVersion> versions;
@@ -128,7 +162,6 @@ struct IndexedPack {
         return std::any_of(versions.constBegin(), versions.constEnd(), [](auto const& v) { return v.is_currently_selected; });
     }
 };
-QString getMetaURL(ResourceProvider provider, QVariant projectID);
 
 struct OverrideDep {
     QString quilt;
@@ -148,6 +181,14 @@ inline auto getOverrideDeps() -> QList<OverrideDep>
 
 QString getMetaURL(ResourceProvider provider, QVariant projectID);
 
+auto getModLoaderString(ModLoaderType type) -> const QString;
+
+constexpr bool hasSingleModLoaderSelected(ModLoaderTypes l) noexcept
+{
+    auto x = static_cast<int>(l);
+    return x && !(x & (x - 1));
+}
+
 }  // namespace ModPlatform
 
 Q_DECLARE_METATYPE(ModPlatform::IndexedPack)

launcher/modplatform/ResourceAPI.h

@@ -54,9 +54,6 @@ class ResourceAPI {
    public:
     virtual ~ResourceAPI() = default;
 
-    enum ModLoaderType { NeoForge = 1 << 0, Forge = 1 << 1, Cauldron = 1 << 2, LiteLoader = 1 << 3, Fabric = 1 << 4, Quilt = 1 << 5 };
-    Q_DECLARE_FLAGS(ModLoaderTypes, ModLoaderType)
-
     struct SortingMethod {
         // The index of the sorting method. Used to allow for arbitrary ordering in the list of methods.
         // Used by Flame in the API request.
@@ -74,7 +71,7 @@ class ResourceAPI {
 
         std::optional<QString> search;
         std::optional<SortingMethod> sorting;
-        std::optional<ModLoaderTypes> loaders;
+        std::optional<ModPlatform::ModLoaderTypes> loaders;
         std::optional<std::list<Version> > versions;
     };
     struct SearchCallbacks {
@@ -87,7 +84,7 @@ class ResourceAPI {
         ModPlatform::IndexedPack pack;
 
         std::optional<std::list<Version> > mcVersions;
-        std::optional<ModLoaderTypes> loaders;
+        std::optional<ModPlatform::ModLoaderTypes> loaders;
 
         VersionSearchArgs(VersionSearchArgs const&) = default;
         void operator=(VersionSearchArgs other)
@@ -108,13 +105,15 @@ class ResourceAPI {
         void operator=(ProjectInfoArgs other) { pack = other.pack; }
     };
     struct ProjectInfoCallbacks {
-        std::function<void(QJsonDocument&, ModPlatform::IndexedPack)> on_succeed;
+        std::function<void(QJsonDocument&, const ModPlatform::IndexedPack&)> on_succeed;
+        std::function<void(QString const& reason)> on_fail;
+        std::function<void()> on_abort;
     };
 
     struct DependencySearchArgs {
         ModPlatform::Dependency dependency;
         Version mcVersion;
-        ModLoaderTypes loader;
+        ModPlatform::ModLoaderTypes loader;
     };
 
     struct DependencySearchCallbacks {
@@ -161,27 +160,6 @@ class ResourceAPI {
         return nullptr;
     }
 
-    static auto getModLoaderString(ModLoaderType type) -> const QString
-    {
-        switch (type) {
-            case NeoForge:
-                return "neoforge";
-            case Forge:
-                return "forge";
-            case Cauldron:
-                return "cauldron";
-            case LiteLoader:
-                return "liteloader";
-            case Fabric:
-                return "fabric";
-            case Quilt:
-                return "quilt";
-            default:
-                break;
-        }
-        return "";
-    }
-
    protected:
     [[nodiscard]] inline QString debugName() const { return "External resource API"; }
 

launcher/modplatform/atlauncher/ATLPackIndex.cpp

@@ -43,5 +43,5 @@ void ATLauncher::loadIndexedPack(ATLauncher::IndexedPack& m, QJsonObject& obj)
     m.system = Json::ensureBoolean(obj, QString("system"), false);
     m.description = Json::ensureString(obj, "description", "");
 
-    m.safeName = Json::requireString(obj, "name").replace(QRegularExpression("[^A-Za-z0-9]"), "");
+    m.safeName = Json::requireString(obj, "name").replace(QRegularExpression("[^A-Za-z0-9]"), "").toLower() + ".png";
 }

launcher/modplatform/flame/FileResolvingTask.cpp

@@ -1,6 +1,7 @@
 #include "FileResolvingTask.h"
 
 #include "Json.h"
+#include "modplatform/ModIndex.h"
 #include "net/ApiDownload.h"
 #include "net/ApiUpload.h"
 #include "net/Upload.h"
@@ -102,7 +103,7 @@ void Flame::FileResolvingTask::netJobFinished()
                 auto url = QString("https://api.modrinth.com/v2/version_file/%1?algorithm=sha1").arg(hash);
                 auto output = std::make_shared<QByteArray>();
                 auto dl = Net::ApiDownload::makeByteArray(QUrl(url), output);
-                QObject::connect(dl.get(), &Net::Download::succeeded, [&out]() { out.resolved = true; });
+                QObject::connect(dl.get(), &Net::ApiDownload::succeeded, [&out]() { out.resolved = true; });
 
                 m_checkJob->addNetAction(dl);
                 blockedProjects.insert(&out, output);
@@ -153,7 +154,7 @@ void Flame::FileResolvingTask::modrinthCheckFinished()
         // If there's more than one mod loader for this version, we can't know for sure
         // which file is relative to each loader, so it's best to not use any one and
         // let the user download it manually.
-        if (file.loaders.size() <= 1) {
+        if (!file.loaders || hasSingleModLoaderSelected(file.loaders)) {
             out->url = file.downloadUrl;
             qDebug() << "Found alternative on modrinth " << out->fileName;
         } else {
@@ -175,7 +176,7 @@ void Flame::FileResolvingTask::modrinthCheckFinished()
             auto url = QString("https://api.curseforge.com/v1/mods/%1").arg(projectId);
             auto dl = Net::ApiDownload::makeByteArray(url, output);
             qDebug() << "Fetching url slug for file:" << mod->fileName;
-            QObject::connect(dl.get(), &Net::Download::succeeded, [block, index, output]() {
+            QObject::connect(dl.get(), &Net::ApiDownload::succeeded, [block, index, output]() {
                 auto mod = block->at(index);  // use the shared_ptr so it is captured and only freed when we are done
                 auto json = QJsonDocument::fromJson(*output);
                 auto base =

launcher/modplatform/flame/FlameAPI.cpp

@@ -6,7 +6,6 @@
 #include "FlameModIndex.h"
 
 #include "Application.h"
-#include "BuildConfig.h"
 #include "Json.h"
 #include "net/ApiDownload.h"
 #include "net/ApiUpload.h"
@@ -131,19 +130,13 @@ auto FlameAPI::getLatestVersion(VersionSearchArgs&& args) -> ModPlatform::Indexe
             auto obj = Json::requireObject(doc);
             auto arr = Json::requireArray(obj, "data");
 
-            QJsonObject latest_file_obj;
-            ModPlatform::IndexedVersion ver_tmp;
-
             for (auto file : arr) {
                 auto file_obj = Json::requireObject(file);
                 auto file_tmp = FlameMod::loadIndexedPackVersion(file_obj);
-                if (file_tmp.date > ver_tmp.date) {
+                if (file_tmp.date > ver.date && (!args.loaders.has_value() || !file_tmp.loaders || args.loaders.value() & file_tmp.loaders))
-                    ver_tmp = file_tmp;
+                    ver = file_tmp;
-                    latest_file_obj = file_obj;
-                }
             }
 
-            ver = FlameMod::loadIndexedPackVersion(latest_file_obj);
         } catch (Json::JsonException& e) {
             qCritical() << "Failed to parse response from a version request.";
             qCritical() << e.what();

launcher/modplatform/flame/FlameAPI.h

@@ -24,7 +24,10 @@ class FlameAPI : public NetworkResourceAPI {
 
     [[nodiscard]] auto getSortingMethods() const -> QList<ResourceAPI::SortingMethod> override;
 
-    static inline auto validateModLoaders(ModLoaderTypes loaders) -> bool { return loaders & (NeoForge | Forge | Fabric | Quilt); }
+    static inline auto validateModLoaders(ModPlatform::ModLoaderTypes loaders) -> bool
+    {
+        return loaders & (ModPlatform::NeoForge | ModPlatform::Forge | ModPlatform::Fabric | ModPlatform::Quilt);
+    }
 
    private:
     static int getClassId(ModPlatform::ResourceType type)
@@ -35,25 +38,47 @@ class FlameAPI : public NetworkResourceAPI {
                 return 6;
             case ModPlatform::ResourceType::RESOURCE_PACK:
                 return 12;
+            case ModPlatform::ResourceType::SHADER_PACK:
+                return 6552;
         }
     }
 
-    static int getMappedModLoader(ModLoaderTypes loaders)
+    static int getMappedModLoader(ModPlatform::ModLoaderType loaders)
     {
         // https://docs.curseforge.com/?http#tocS_ModLoaderType
-        if (loaders & Forge)
+        switch (loaders) {
-            return 1;
+            case ModPlatform::Forge:
-        if (loaders & Fabric)
+                return 1;
-            return 4;
+            case ModPlatform::Cauldron:
-        // TODO: remove this once Quilt drops official Fabric support
+                return 2;
-        if (loaders & Quilt)  // NOTE: Most if not all Fabric mods should work *currently*
+            case ModPlatform::LiteLoader:
-            return 4;         // FIXME: implement multiple loaders filter (this should be 5)
+                return 3;
-        // TODO: remove this once NeoForge drops official Forge support
+            case ModPlatform::Fabric:
-        if (loaders & NeoForge)  // NOTE: Most if not all Forge mods should work *currently*
+                return 4;
-            return 1;            // FIXME: implement multiple loaders filter (this should be 6)
+            case ModPlatform::Quilt:
+                return 5;
+            case ModPlatform::NeoForge:
+                return 6;
+        }
         return 0;
     }
 
+    static auto getModLoaderStrings(const ModPlatform::ModLoaderTypes types) -> const QStringList
+    {
+        QStringList l;
+        for (auto loader : { ModPlatform::NeoForge, ModPlatform::Forge, ModPlatform::Fabric, ModPlatform::Quilt }) {
+            if (types & loader) {
+                l << QString::number(getMappedModLoader(loader));
+            }
+        }
+        return l;
+    }
+
+    static auto getModLoaderFilters(ModPlatform::ModLoaderTypes types) -> const QString
+    {
+        return "[" + getModLoaderStrings(types).join(',') + "]";
+    }
+
    private:
     [[nodiscard]] std::optional<QString> getSearchURL(SearchArgs const& args) const override
     {
@@ -70,7 +95,7 @@ class FlameAPI : public NetworkResourceAPI {
             get_arguments.append(QString("sortField=%1").arg(args.sorting.value().index));
         get_arguments.append("sortOrder=desc");
         if (args.loaders.has_value())
-            get_arguments.append(QString("modLoaderType=%1").arg(getMappedModLoader(args.loaders.value())));
+            get_arguments.append(QString("modLoaderTypes=%1").arg(getModLoaderFilters(args.loaders.value())));
         get_arguments.append(gameVersionStr);
 
         return "https://api.curseforge.com/v1/mods/search?gameId=432&" + get_arguments.join('&');
@@ -84,47 +109,27 @@ class FlameAPI : public NetworkResourceAPI {
     [[nodiscard]] std::optional<QString> getVersionsURL(VersionSearchArgs const& args) const override
     {
         auto addonId = args.pack.addonId.toString();
-        QString url{ QString("https://api.curseforge.com/v1/mods/%1/files?pageSize=10000&").arg(addonId) };
+        QString url = QString("https://api.curseforge.com/v1/mods/%1/files?pageSize=10000").arg(addonId);
 
-        QStringList get_parameters;
         if (args.mcVersions.has_value())
-            get_parameters.append(QString("gameVersion=%1").arg(args.mcVersions.value().front().toString()));
+            url += QString("&gameVersion=%1").arg(args.mcVersions.value().front().toString());
 
-        if (args.loaders.has_value()) {
+        if (args.loaders.has_value() && ModPlatform::hasSingleModLoaderSelected(args.loaders.value())) {
-            int mappedModLoader = getMappedModLoader(args.loaders.value());
+            int mappedModLoader = getMappedModLoader(static_cast<ModPlatform::ModLoaderType>(static_cast<int>(args.loaders.value())));
-
+            url += QString("&modLoaderType=%1").arg(mappedModLoader);
-            if (args.loaders.value() & Quilt) {
-                auto overide = ModPlatform::getOverrideDeps();
-                auto over = std::find_if(overide.cbegin(), overide.cend(), [addonId](auto dep) {
-                    return dep.provider == ModPlatform::ResourceProvider::FLAME && addonId == dep.quilt;
-                });
-                if (over != overide.cend()) {
-                    mappedModLoader = 5;
-                }
-            }
-
-            get_parameters.append(QString("modLoaderType=%1").arg(mappedModLoader));
         }
-
+        return url;
-        return url + get_parameters.join('&');
     };
 
     [[nodiscard]] std::optional<QString> getDependencyURL(DependencySearchArgs const& args) const override
     {
-        auto mappedModLoader = getMappedModLoader(args.loader);
         auto addonId = args.dependency.addonId.toString();
-        if (args.loader & Quilt) {
+        auto url =
-            auto overide = ModPlatform::getOverrideDeps();
+            QString("https://api.curseforge.com/v1/mods/%1/files?pageSize=10000&gameVersion=%2").arg(addonId, args.mcVersion.toString());
-            auto over = std::find_if(overide.cbegin(), overide.cend(), [addonId](auto dep) {
+        if (args.loader && ModPlatform::hasSingleModLoaderSelected(args.loader)) {
-                return dep.provider == ModPlatform::ResourceProvider::FLAME && addonId == dep.quilt;
+            int mappedModLoader = getMappedModLoader(static_cast<ModPlatform::ModLoaderType>(static_cast<int>(args.loader)));
-            });
+            url += QString("&modLoaderType=%1").arg(mappedModLoader);
-            if (over != overide.cend()) {
-                mappedModLoader = 5;
-            }
         }
-        return QString("https://api.curseforge.com/v1/mods/%1/files?pageSize=10000&gameVersion=%2&modLoaderType=%3")
+        return url;
-            .arg(addonId)
-            .arg(args.mcVersion.toString())
-            .arg(mappedModLoader);
     };
 };

launcher/modplatform/flame/FlameCheckUpdate.cpp

@@ -5,13 +5,12 @@
 #include <MurmurHash2.h>
 #include <memory>
 
-#include "FileSystem.h"
 #include "Json.h"
 
 #include "ResourceDownloadTask.h"
 
 #include "minecraft/mod/ModFolderModel.h"
-#include "minecraft/mod/ResourceFolderModel.h"
+#include "minecraft/mod/tasks/GetModDependenciesTask.h"
 
 #include "net/ApiDownload.h"
 
@@ -156,18 +155,17 @@ void FlameCheckUpdate::executeTask()
             continue;
         }
 
+        // Fake pack with the necessary info to pass to the download task :)
+        auto pack = std::make_shared<ModPlatform::IndexedPack>();
+        pack->name = mod->name();
+        pack->slug = mod->metadata()->slug;
+        pack->addonId = mod->metadata()->project_id;
+        pack->websiteUrl = mod->homeurl();
+        for (auto& author : mod->authors())
+            pack->authors.append({ author });
+        pack->description = mod->description();
+        pack->provider = ModPlatform::ResourceProvider::FLAME;
         if (!latest_ver.hash.isEmpty() && (mod->metadata()->hash != latest_ver.hash || mod->status() == ModStatus::NotInstalled)) {
-            // Fake pack with the necessary info to pass to the download task :)
-            auto pack = std::make_shared<ModPlatform::IndexedPack>();
-            pack->name = mod->name();
-            pack->slug = mod->metadata()->slug;
-            pack->addonId = mod->metadata()->project_id;
-            pack->websiteUrl = mod->homeurl();
-            for (auto& author : mod->authors())
-                pack->authors.append({ author });
-            pack->description = mod->description();
-            pack->provider = ModPlatform::ResourceProvider::FLAME;
-
             auto old_version = mod->version();
             if (old_version.isEmpty() && mod->status() != ModStatus::NotInstalled) {
                 auto current_ver = getFileInfo(latest_ver.addonId.toInt(), mod->metadata()->file_id.toInt());
@@ -175,10 +173,11 @@ void FlameCheckUpdate::executeTask()
             }
 
             auto download_task = makeShared<ResourceDownloadTask>(pack, latest_ver, m_mods_folder);
-            m_updatable.emplace_back(pack->name, mod->metadata()->hash, old_version, latest_ver.version,
+            m_updatable.emplace_back(pack->name, mod->metadata()->hash, old_version, latest_ver.version, latest_ver.version_type,
                                      api.getModFileChangelog(latest_ver.addonId.toInt(), latest_ver.fileId.toInt()),
                                      ModPlatform::ResourceProvider::FLAME, download_task);
         }
+        m_deps.append(std::make_shared<GetModDependenciesTask::PackDependency>(pack, latest_ver));
     }
 
     emitSucceeded();

launcher/modplatform/flame/FlameCheckUpdate.h

@@ -10,7 +10,7 @@ class FlameCheckUpdate : public CheckUpdateTask {
    public:
     FlameCheckUpdate(QList<Mod*>& mods,
                      std::list<Version>& mcVersions,
-                     std::optional<ResourceAPI::ModLoaderTypes> loaders,
+                     std::optional<ModPlatform::ModLoaderTypes> loaders,
                      std::shared_ptr<ModFolderModel> mods_folder)
         : CheckUpdateTask(mods, mcVersions, loaders, mods_folder)
     {}

launcher/modplatform/flame/FlameInstanceCreationTask.cpp

@@ -62,6 +62,7 @@
 #include "minecraft/World.h"
 #include "minecraft/mod/tasks/LocalResourceParse.h"
 #include "net/ApiDownload.h"
+#include "ui/pages/modplatform/OptionalModDialog.h"
 
 static const FlameAPI api;
 
@@ -509,13 +510,33 @@ void FlameCreationTask::idResolverSucceeded(QEventLoop& loop)
 void FlameCreationTask::setupDownloadJob(QEventLoop& loop)
 {
     m_files_job.reset(new NetJob(tr("Mod Download Flame"), APPLICATION->network()));
-    for (const auto& result : m_mod_id_resolver->getResults().files) {
+    auto results = m_mod_id_resolver->getResults().files;
-        QString filename = result.fileName;
+
+    QStringList optionalFiles;
+    for (auto& result : results) {
         if (!result.required) {
-            filename += ".disabled";
+            optionalFiles << FS::PathCombine(result.targetFolder, result.fileName);
+        }
+    }
+
+    QStringList selectedOptionalMods;
+    if (!optionalFiles.empty()) {
+        OptionalModDialog optionalModDialog(m_parent, optionalFiles);
+        if (optionalModDialog.exec() == QDialog::Rejected) {
+            emitAborted();
+            loop.quit();
+            return;
         }
 
-        auto relpath = FS::PathCombine("minecraft", result.targetFolder, filename);
+        selectedOptionalMods = optionalModDialog.getResult();
+    }
+    for (const auto& result : results) {
+        auto relpath = FS::PathCombine(result.targetFolder, result.fileName);
+        if (!result.required && !selectedOptionalMods.contains(relpath)) {
+            relpath += ".disabled";
+        }
+
+        relpath = FS::PathCombine("minecraft", relpath);
         auto path = FS::PathCombine(m_stagingPath, relpath);
 
         switch (result.type) {

launcher/modplatform/flame/FlameModIndex.cpp

@@ -81,6 +81,7 @@ void FlameMod::loadIndexedPackVersions(ModPlatform::IndexedPack& pack,
     QVector<ModPlatform::IndexedVersion> unsortedVersions;
     auto profile = (dynamic_cast<const MinecraftInstance*>(inst))->getPackProfile();
     QString mcVersion = profile->getComponentVersion("net.minecraft");
+    auto loaders = profile->getSupportedModLoaders();
 
     for (auto versionIter : arr) {
         auto obj = versionIter.toObject();
@@ -89,7 +90,8 @@ void FlameMod::loadIndexedPackVersions(ModPlatform::IndexedPack& pack,
         if (!file.addonId.isValid())
             file.addonId = pack.addonId;
 
-        if (file.fileId.isValid())  // Heuristic to check if the returned value is valid
+        if (file.fileId.isValid() &&
+            (!loaders.has_value() || !file.loaders || loaders.value() & file.loaders))  // Heuristic to check if the returned value is valid
             unsortedVersions.append(file);
     }
 
@@ -115,6 +117,19 @@ auto FlameMod::loadIndexedPackVersion(QJsonObject& obj, bool load_changelog) ->
 
         if (str.contains('.'))
             file.mcVersion.append(str);
+        auto loader = str.toLower();
+        if (loader == "neoforge")
+            file.loaders |= ModPlatform::NeoForge;
+        if (loader == "forge")
+            file.loaders |= ModPlatform::Forge;
+        if (loader == "cauldron")
+            file.loaders |= ModPlatform::Cauldron;
+        if (loader == "liteloader")
+            file.loaders |= ModPlatform::LiteLoader;
+        if (loader == "fabric")
+            file.loaders |= ModPlatform::Fabric;
+        if (loader == "quilt")
+            file.loaders |= ModPlatform::Quilt;
     }
 
     file.addonId = Json::requireInteger(obj, "modId");
@@ -124,6 +139,22 @@ auto FlameMod::loadIndexedPackVersion(QJsonObject& obj, bool load_changelog) ->
     file.downloadUrl = Json::ensureString(obj, "downloadUrl");
     file.fileName = Json::requireString(obj, "fileName");
 
+    ModPlatform::IndexedVersionType::VersionType ver_type;
+    switch (Json::requireInteger(obj, "releaseType")) {
+        case 1:
+            ver_type = ModPlatform::IndexedVersionType::VersionType::Release;
+            break;
+        case 2:
+            ver_type = ModPlatform::IndexedVersionType::VersionType::Beta;
+            break;
+        case 3:
+            ver_type = ModPlatform::IndexedVersionType::VersionType::Alpha;
+            break;
+        default:
+            ver_type = ModPlatform::IndexedVersionType::VersionType::Unknown;
+    }
+    file.version_type = ModPlatform::IndexedVersionType(ver_type);
+
     auto hash_list = Json::ensureArray(obj, "hashes");
     for (auto h : hash_list) {
         auto hash_entry = Json::ensureObject(h);
@@ -173,8 +204,11 @@ auto FlameMod::loadIndexedPackVersion(QJsonObject& obj, bool load_changelog) ->
     return file;
 }
 
-ModPlatform::IndexedVersion FlameMod::loadDependencyVersions(const ModPlatform::Dependency& m, QJsonArray& arr)
+ModPlatform::IndexedVersion FlameMod::loadDependencyVersions(const ModPlatform::Dependency& m, QJsonArray& arr, const BaseInstance* inst)
 {
+    auto profile = (dynamic_cast<const MinecraftInstance*>(inst))->getPackProfile();
+    QString mcVersion = profile->getComponentVersion("net.minecraft");
+    auto loaders = profile->getSupportedModLoaders();
     QVector<ModPlatform::IndexedVersion> versions;
     for (auto versionIter : arr) {
         auto obj = versionIter.toObject();
@@ -183,7 +217,8 @@ ModPlatform::IndexedVersion FlameMod::loadDependencyVersions(const ModPlatform::
         if (!file.addonId.isValid())
             file.addonId = m.addonId;
 
-        if (file.fileId.isValid())  // Heuristic to check if the returned value is valid
+        if (file.fileId.isValid() &&
+            (!loaders.has_value() || !file.loaders || loaders.value() & file.loaders))  // Heuristic to check if the returned value is valid
             versions.append(file);
     }
 
@@ -192,5 +227,7 @@ ModPlatform::IndexedVersion FlameMod::loadDependencyVersions(const ModPlatform::
         return a.date > b.date;
     };
     std::sort(versions.begin(), versions.end(), orderSortPredicate);
-    return versions.front();
+    if (versions.size() != 0)
+        return versions.front();
+    return {};
 }

launcher/modplatform/flame/FlameModIndex.h

@@ -19,5 +19,5 @@ void loadIndexedPackVersions(ModPlatform::IndexedPack& pack,
                              const shared_qobject_ptr<QNetworkAccessManager>& network,
                              const BaseInstance* inst);
 auto loadIndexedPackVersion(QJsonObject& obj, bool load_changelog = false) -> ModPlatform::IndexedVersion;
-auto loadDependencyVersions(const ModPlatform::Dependency& m, QJsonArray& arr) -> ModPlatform::IndexedVersion;
+auto loadDependencyVersions(const ModPlatform::Dependency& m, QJsonArray& arr, const BaseInstance* inst) -> ModPlatform::IndexedVersion;
 }  // namespace FlameMod

launcher/modplatform/flame/FlamePackExportTask.cpp

@@ -28,6 +28,7 @@
 #include <algorithm>
 #include <iterator>
 #include <memory>
+#include "Application.h"
 #include "Json.h"
 #include "MMCZip.h"
 #include "minecraft/PackProfile.h"
@@ -43,12 +44,14 @@ const QStringList FlamePackExportTask::FILE_EXTENSIONS({ "jar", "zip" });
 FlamePackExportTask::FlamePackExportTask(const QString& name,
                                          const QString& version,
                                          const QString& author,
+                                         bool optionalFiles,
                                          InstancePtr instance,
                                          const QString& output,
                                          MMCZip::FilterFunction filter)
     : name(name)
     , version(version)
     , author(author)
+    , optionalFiles(optionalFiles)
     , instance(instance)
     , mcInstance(dynamic_cast<MinecraftInstance*>(instance.get()))
     , gameRoot(instance->gameRoot())
@@ -100,7 +103,8 @@ void FlamePackExportTask::collectHashes()
     setStatus(tr("Finding file hashes..."));
     setProgress(1, 5);
     auto allMods = mcInstance->loaderModList()->allMods();
-    ConcurrentTask::Ptr hashingTask(new ConcurrentTask(this, "MakeHashesTask", 10));
+    ConcurrentTask::Ptr hashingTask(
+        new ConcurrentTask(this, "MakeHashesTask", APPLICATION->settings()->get("NumberOfConcurrentTasks").toInt()));
     task.reset(hashingTask);
     for (const QFileInfo& file : files) {
         const QString relative = gameRoot.relativeFilePath(file.absoluteFilePath());
@@ -410,7 +414,7 @@ QByteArray FlamePackExportTask::generateIndex()
         QJsonObject file;
         file["projectID"] = mod.addonId;
         file["fileID"] = mod.version;
-        file["required"] = mod.enabled;
+        file["required"] = mod.enabled || !optionalFiles;
         files << file;
     }
     obj["files"] = files;

launcher/modplatform/flame/FlamePackExportTask.h

@@ -30,6 +30,7 @@ class FlamePackExportTask : public Task {
     FlamePackExportTask(const QString& name,
                         const QString& version,
                         const QString& author,
+                        bool optionalFiles,
                         InstancePtr instance,
                         const QString& output,
                         MMCZip::FilterFunction filter);
@@ -44,6 +45,7 @@ class FlamePackExportTask : public Task {
 
     // inputs
     const QString name, version, author;
+    const bool optionalFiles;
     const InstancePtr instance;
     MinecraftInstance* mcInstance;
     const QDir gameRoot;

launcher/modplatform/flame/FlamePackIndex.cpp

@@ -1,4 +1,6 @@
 #include "FlamePackIndex.h"
+#include <QFileInfo>
+#include <QUrl>
 
 #include "Json.h"
 
@@ -9,8 +11,8 @@ void Flame::loadIndexedPack(Flame::IndexedPack& pack, QJsonObject& obj)
     pack.description = Json::ensureString(obj, "summary", "");
 
     auto logo = Json::requireObject(obj, "logo");
-    pack.logoName = Json::requireString(logo, "title");
     pack.logoUrl = Json::requireString(logo, "thumbnailUrl");
+    pack.logoName = Json::requireString(obj, "slug") + "." + QFileInfo(QUrl(pack.logoUrl).fileName()).suffix();
 
     auto authors = Json::requireArray(obj, "authors");
     for (auto authorIter : authors) {
@@ -89,6 +91,22 @@ void Flame::loadIndexedPackVersions(Flame::IndexedPack& pack, QJsonArray& arr)
         // pick the latest version supported
         file.mcVersion = versionArray[0].toString();
         file.version = Json::requireString(version, "displayName");
+
+        ModPlatform::IndexedVersionType::VersionType ver_type;
+        switch (Json::requireInteger(version, "releaseType")) {
+            case 1:
+                ver_type = ModPlatform::IndexedVersionType::VersionType::Release;
+                break;
+            case 2:
+                ver_type = ModPlatform::IndexedVersionType::VersionType::Beta;
+                break;
+            case 3:
+                ver_type = ModPlatform::IndexedVersionType::VersionType::Alpha;
+                break;
+            default:
+                ver_type = ModPlatform::IndexedVersionType::VersionType::Unknown;
+        }
+        file.version_type = ModPlatform::IndexedVersionType(ver_type);
         file.downloadUrl = Json::ensureString(version, "downloadUrl");
 
         // only add if we have a download URL (third party distribution is enabled)

launcher/modplatform/flame/FlamePackIndex.h

@@ -17,6 +17,7 @@ struct IndexedVersion {
     int addonId;
     int fileId;
     QString version;
+    ModPlatform::IndexedVersionType version_type;
     QString mcVersion;
     QString downloadUrl;
 };

launcher/modplatform/flame/PackManifest.h

@@ -48,7 +48,7 @@ struct File {
 
     int projectId = 0;
     int fileId = 0;
-    // NOTE: the opposite to 'optional'. This is at the time of writing unused.
+    // NOTE: the opposite to 'optional'
     bool required = true;
     QString hash;
     // NOTE: only set on blocked files ! Empty otherwise.

launcher/modplatform/helpers/NetworkResourceAPI.cpp

@@ -72,7 +72,8 @@ Task::Ptr NetworkResourceAPI::getProjectInfo(ProjectInfoArgs&& args, ProjectInfo
 
         callbacks.on_succeed(doc, args.pack);
     });
-
+    QObject::connect(job.get(), &NetJob::failed, [callbacks](QString reason) { callbacks.on_fail(reason); });
+    QObject::connect(job.get(), &NetJob::aborted, [callbacks] { callbacks.on_abort(); });
     return job;
 }
 
@@ -131,7 +132,7 @@ Task::Ptr NetworkResourceAPI::getDependencyVersion(DependencySearchArgs&& args,
     auto netJob = makeShared<NetJob>(QString("%1::Dependency").arg(args.dependency.addonId.toString()), APPLICATION->network());
     auto response = std::make_shared<QByteArray>();
 
-    netJob->addNetAction(Net::Download::makeByteArray(versions_url, response));
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(versions_url, response));
 
     QObject::connect(netJob.get(), &NetJob::succeeded, [=] {
         QJsonParseError parse_error{};

launcher/modplatform/import_ftb/PackHelpers.cpp

@@ -60,19 +60,19 @@ Modpack parseDirectory(QString path)
             auto name = Json::requireString(obj, "name", "name");
             auto version = Json::requireString(obj, "version", "version");
             if (name == "neoforge") {
-                modpack.loaderType = ResourceAPI::NeoForge;
+                modpack.loaderType = ModPlatform::NeoForge;
                 modpack.version = version;
                 break;
             } else if (name == "forge") {
-                modpack.loaderType = ResourceAPI::Forge;
+                modpack.loaderType = ModPlatform::Forge;
                 modpack.version = version;
                 break;
             } else if (name == "fabric") {
-                modpack.loaderType = ResourceAPI::Fabric;
+                modpack.loaderType = ModPlatform::Fabric;
                 modpack.version = version;
                 break;
             } else if (name == "quilt") {
-                modpack.loaderType = ResourceAPI::Quilt;
+                modpack.loaderType = ModPlatform::Quilt;
                 modpack.version = version;
                 break;
             }

launcher/modplatform/import_ftb/PackHelpers.h

@@ -39,7 +39,7 @@ struct Modpack {
     // not needed for instance creation
     QVariant jvmArgs;
 
-    std::optional<ResourceAPI::ModLoaderType> loaderType;
+    std::optional<ModPlatform::ModLoaderType> loaderType;
     QString loaderVersion;
 
     QIcon icon;

launcher/modplatform/import_ftb/PackInstallTask.cpp

@@ -68,25 +68,25 @@ void PackInstallTask::copySettings()
     auto modloader = m_pack.loaderType;
     if (modloader.has_value())
         switch (modloader.value()) {
-            case ResourceAPI::NeoForge: {
+            case ModPlatform::NeoForge: {
                 components->setComponentVersion("net.neoforged", m_pack.version, true);
                 break;
             }
-            case ResourceAPI::Forge: {
+            case ModPlatform::Forge: {
                 components->setComponentVersion("net.minecraftforge", m_pack.version, true);
                 break;
             }
-            case ResourceAPI::Fabric: {
+            case ModPlatform::Fabric: {
                 components->setComponentVersion("net.fabricmc.fabric-loader", m_pack.version, true);
                 break;
             }
-            case ResourceAPI::Quilt: {
+            case ModPlatform::Quilt: {
                 components->setComponentVersion("org.quiltmc.quilt-loader", m_pack.version, true);
                 break;
             }
-            case ResourceAPI::Cauldron:
+            case ModPlatform::Cauldron:
                 break;
-            case ResourceAPI::LiteLoader:
+            case ModPlatform::LiteLoader:
                 break;
         }
     components->saveNow();

launcher/modplatform/legacy_ftb/PackInstallTask.cpp

@@ -70,16 +70,18 @@ void PackInstallTask::downloadPack()
     setProgress(1, 4);
     setAbortable(false);
 
-    archivePath = QString("%1/%2/%3").arg(m_pack.dir, m_version.replace(".", "_"), m_pack.file);
+    auto path = QString("%1/%2/%3").arg(m_pack.dir, m_version.replace(".", "_"), m_pack.file);
-
+    auto entry = APPLICATION->metacache()->resolveEntry("FTBPacks", path);
+    entry->setStale(true);
+    archivePath = entry->getFullPath();
     netJobContainer.reset(new NetJob("Download FTB Pack", m_network));
     QString url;
     if (m_pack.type == PackType::Private) {
-        url = QString(BuildConfig.LEGACY_FTB_CDN_BASE_URL + "privatepacks/%1").arg(archivePath);
+        url = QString(BuildConfig.LEGACY_FTB_CDN_BASE_URL + "privatepacks/%1").arg(path);
     } else {
-        url = QString(BuildConfig.LEGACY_FTB_CDN_BASE_URL + "modpacks/%1").arg(archivePath);
+        url = QString(BuildConfig.LEGACY_FTB_CDN_BASE_URL + "modpacks/%1").arg(path);
     }
-    netJobContainer->addNetAction(Net::ApiDownload::makeFile(url, archivePath));
+    netJobContainer->addNetAction(Net::ApiDownload::makeCached(url, entry));
 
     connect(netJobContainer.get(), &NetJob::succeeded, this, &PackInstallTask::unzip);
     connect(netJobContainer.get(), &NetJob::failed, this, &PackInstallTask::emitFailed);

launcher/modplatform/modrinth/ModrinthAPI.cpp

@@ -41,7 +41,7 @@ Task::Ptr ModrinthAPI::currentVersions(const QStringList& hashes, QString hash_f
 Task::Ptr ModrinthAPI::latestVersion(QString hash,
                                      QString hash_format,
                                      std::optional<std::list<Version>> mcVersions,
-                                     std::optional<ModLoaderTypes> loaders,
+                                     std::optional<ModPlatform::ModLoaderTypes> loaders,
                                      std::shared_ptr<QByteArray> response)
 {
     auto netJob = makeShared<NetJob>(QString("Modrinth::GetLatestVersion"), APPLICATION->network());
@@ -71,7 +71,7 @@ Task::Ptr ModrinthAPI::latestVersion(QString hash,
 Task::Ptr ModrinthAPI::latestVersions(const QStringList& hashes,
                                       QString hash_format,
                                       std::optional<std::list<Version>> mcVersions,
-                                      std::optional<ModLoaderTypes> loaders,
+                                      std::optional<ModPlatform::ModLoaderTypes> loaders,
                                       std::shared_ptr<QByteArray> response)
 {
     auto netJob = makeShared<NetJob>(QString("Modrinth::GetLatestVersions"), APPLICATION->network());

launcher/modplatform/modrinth/ModrinthAPI.h

@@ -19,13 +19,13 @@ class ModrinthAPI : public NetworkResourceAPI {
     auto latestVersion(QString hash,
                        QString hash_format,
                        std::optional<std::list<Version>> mcVersions,
-                       std::optional<ModLoaderTypes> loaders,
+                       std::optional<ModPlatform::ModLoaderTypes> loaders,
                        std::shared_ptr<QByteArray> response) -> Task::Ptr;
 
     auto latestVersions(const QStringList& hashes,
                         QString hash_format,
                         std::optional<std::list<Version>> mcVersions,
-                        std::optional<ModLoaderTypes> loaders,
+                        std::optional<ModPlatform::ModLoaderTypes> loaders,
                         std::shared_ptr<QByteArray> response) -> Task::Ptr;
 
     Task::Ptr getProjects(QStringList addonIds, std::shared_ptr<QByteArray> response) const override;
@@ -35,22 +35,19 @@ class ModrinthAPI : public NetworkResourceAPI {
 
     inline auto getAuthorURL(const QString& name) const -> QString { return "https://modrinth.com/user/" + name; };
 
-    static auto getModLoaderStrings(const ModLoaderTypes types) -> const QStringList
+    static auto getModLoaderStrings(const ModPlatform::ModLoaderTypes types) -> const QStringList
     {
         QStringList l;
-        for (auto loader : { NeoForge, Forge, Fabric, Quilt, LiteLoader }) {
+        for (auto loader :
+             { ModPlatform::NeoForge, ModPlatform::Forge, ModPlatform::Fabric, ModPlatform::Quilt, ModPlatform::LiteLoader }) {
             if (types & loader) {
                 l << getModLoaderString(loader);
             }
         }
-        if ((types & NeoForge) && (~types & Forge))  // Add Forge if NeoForge is in use, if Forge isn't already there
-            l << getModLoaderString(Forge);
-        if ((types & Quilt) && (~types & Fabric))  // Add Fabric if Quilt is in use, if Fabric isn't already there
-            l << getModLoaderString(Fabric);
         return l;
     }
 
-    static auto getModLoaderFilters(ModLoaderTypes types) -> const QString
+    static auto getModLoaderFilters(ModPlatform::ModLoaderTypes types) -> const QString
     {
         QStringList l;
         for (auto loader : getModLoaderStrings(types)) {
@@ -143,9 +140,9 @@ class ModrinthAPI : public NetworkResourceAPI {
         return s.isEmpty() ? QString() : s;
     }
 
-    static inline auto validateModLoaders(ModLoaderTypes loaders) -> bool
+    static inline auto validateModLoaders(ModPlatform::ModLoaderTypes loaders) -> bool
     {
-        return loaders & (NeoForge | Forge | Fabric | Quilt | LiteLoader);
+        return loaders & (ModPlatform::NeoForge | ModPlatform::Forge | ModPlatform::Fabric | ModPlatform::Quilt | ModPlatform::LiteLoader);
     }
 
     [[nodiscard]] std::optional<QString> getDependencyURL(DependencySearchArgs const& args) const override

launcher/modplatform/modrinth/ModrinthCheckUpdate.cpp

@@ -11,7 +11,6 @@
 #include "tasks/ConcurrentTask.h"
 
 #include "minecraft/mod/ModFolderModel.h"
-#include "minecraft/mod/ResourceFolderModel.h"
 
 static ModrinthAPI api;
 static ModPlatform::ProviderCapabilities ProviderCaps;
@@ -39,7 +38,7 @@ void ModrinthCheckUpdate::executeTask()
     QStringList hashes;
     auto best_hash_type = ProviderCaps.hashType(ModPlatform::ResourceProvider::MODRINTH).first();
 
-    ConcurrentTask hashing_task(this, "MakeModrinthHashesTask", 10);
+    ConcurrentTask hashing_task(this, "MakeModrinthHashesTask", APPLICATION->settings()->get("NumberOfConcurrentTasks").toInt());
     for (auto* mod : m_mods) {
         if (!mod->enabled()) {
             emit checkFailed(mod, tr("Disabled mods won't be updated, to prevent mod duplication issues!"));
@@ -111,11 +110,11 @@ void ModrinthCheckUpdate::executeTask()
                 // so we may want to filter it
                 QString loader_filter;
                 if (m_loaders.has_value()) {
-                    static auto flags = { ResourceAPI::ModLoaderType::NeoForge, ResourceAPI::ModLoaderType::Forge,
+                    static auto flags = { ModPlatform::ModLoaderType::NeoForge, ModPlatform::ModLoaderType::Forge,
-                                          ResourceAPI::ModLoaderType::Fabric, ResourceAPI::ModLoaderType::Quilt };
+                                          ModPlatform::ModLoaderType::Fabric, ModPlatform::ModLoaderType::Quilt };
                     for (auto flag : flags) {
                         if (m_loaders.value().testFlag(flag)) {
-                            loader_filter = api.getModLoaderString(flag);
+                            loader_filter = ModPlatform::getModLoaderString(flag);
                             break;
                         }
                     }
@@ -145,26 +144,27 @@ void ModrinthCheckUpdate::executeTask()
                 auto mod = *mod_iter;
 
                 auto key = project_ver.hash;
+
+                // Fake pack with the necessary info to pass to the download task :)
+                auto pack = std::make_shared<ModPlatform::IndexedPack>();
+                pack->name = mod->name();
+                pack->slug = mod->metadata()->slug;
+                pack->addonId = mod->metadata()->project_id;
+                pack->websiteUrl = mod->homeurl();
+                for (auto& author : mod->authors())
+                    pack->authors.append({ author });
+                pack->description = mod->description();
+                pack->provider = ModPlatform::ResourceProvider::MODRINTH;
                 if ((key != hash && project_ver.is_preferred) || (mod->status() == ModStatus::NotInstalled)) {
                     if (mod->version() == project_ver.version_number)
                         continue;
 
-                    // Fake pack with the necessary info to pass to the download task :)
-                    auto pack = std::make_shared<ModPlatform::IndexedPack>();
-                    pack->name = mod->name();
-                    pack->slug = mod->metadata()->slug;
-                    pack->addonId = mod->metadata()->project_id;
-                    pack->websiteUrl = mod->homeurl();
-                    for (auto& author : mod->authors())
-                        pack->authors.append({ author });
-                    pack->description = mod->description();
-                    pack->provider = ModPlatform::ResourceProvider::MODRINTH;
-
                     auto download_task = makeShared<ResourceDownloadTask>(pack, project_ver, m_mods_folder);
 
-                    m_updatable.emplace_back(pack->name, hash, mod->version(), project_ver.version_number, project_ver.changelog,
+                    m_updatable.emplace_back(pack->name, hash, mod->version(), project_ver.version_number, project_ver.version_type,
-                                             ModPlatform::ResourceProvider::MODRINTH, download_task);
+                                             project_ver.changelog, ModPlatform::ResourceProvider::MODRINTH, download_task);
                 }
+                m_deps.append(std::make_shared<GetModDependenciesTask::PackDependency>(pack, project_ver));
             }
         } catch (Json::JsonException& e) {
             failed(e.cause() + " : " + e.what());

launcher/modplatform/modrinth/ModrinthCheckUpdate.h

@@ -10,7 +10,7 @@ class ModrinthCheckUpdate : public CheckUpdateTask {
    public:
     ModrinthCheckUpdate(QList<Mod*>& mods,
                         std::list<Version>& mcVersions,
-                        std::optional<ResourceAPI::ModLoaderTypes> loaders,
+                        std::optional<ModPlatform::ModLoaderTypes> loaders,
                         std::shared_ptr<ModFolderModel> mods_folder)
         : CheckUpdateTask(mods, mcVersions, loaders, mods_folder)
     {}

launcher/modplatform/modrinth/ModrinthInstanceCreationTask.cpp

@@ -9,6 +9,7 @@
 
 #include "modplatform/helpers/OverrideUtils.h"
 
+#include "modplatform/modrinth/ModrinthPackManifest.h"
 #include "net/ChecksumValidator.h"
 
 #include "net/ApiDownload.h"
@@ -16,8 +17,10 @@
 #include "settings/INISettingsObject.h"
 
 #include "ui/dialogs/CustomMessageBox.h"
+#include "ui/pages/modplatform/OptionalModDialog.h"
 
 #include <QAbstractButton>
+#include <vector>
 
 bool ModrinthCreationTask::abort()
 {
@@ -319,10 +322,10 @@ bool ModrinthCreationTask::parseManifest(const QString& index_path,
             }
 
             auto jsonFiles = Json::requireIsArrayOf<QJsonObject>(obj, "files", "modrinth.index.json");
-            bool had_optional = false;
+            std::vector<Modrinth::File> optionalFiles;
             for (const auto& modInfo : jsonFiles) {
                 Modrinth::File file;
-                file.path = Json::requireString(modInfo, "path");
+                file.path = Json::requireString(modInfo, "path").replace("\\", "/");
 
                 auto env = Json::ensureObject(modInfo, "env");
                 // 'env' field is optional
@@ -331,18 +334,7 @@ bool ModrinthCreationTask::parseManifest(const QString& index_path,
                     if (support == "unsupported") {
                         continue;
                     } else if (support == "optional") {
-                        // TODO: Make a review dialog for choosing which ones the user wants!
+                        file.required = false;
-                        if (!had_optional && show_optional_dialog) {
-                            had_optional = true;
-                            auto info = CustomMessageBox::selectable(
-                                m_parent, tr("Optional mod detected!"),
-                                tr("One or more mods from this modpack are optional. They will be downloaded, but disabled by default!"),
-                                QMessageBox::Information);
-                            info->exec();
-                        }
-
-                        if (file.path.endsWith(".jar"))
-                            file.path += ".disabled";
                     }
                 }
 
@@ -385,9 +377,29 @@ bool ModrinthCreationTask::parseManifest(const QString& index_path,
                     }
                 }
 
-                files.push_back(file);
+                (file.required ? files : optionalFiles).push_back(file);
             }
 
+            if (!optionalFiles.empty()) {
+                QStringList oFiles;
+                for (auto file : optionalFiles)
+                    oFiles.push_back(file.path);
+                OptionalModDialog optionalModDialog(m_parent, oFiles);
+                if (optionalModDialog.exec() == QDialog::Rejected) {
+                    emitAborted();
+                    return false;
+                }
+
+                auto selectedMods = optionalModDialog.getResult();
+                for (auto file : optionalFiles) {
+                    if (selectedMods.contains(file.path)) {
+                        file.required = true;
+                    } else {
+                        file.path += ".disabled";
+                    }
+                    files.push_back(file);
+                }
+            }
             if (set_internal_data) {
                 auto dependencies = Json::requireObject(obj, "dependencies", "modrinth.index.json");
                 for (auto it = dependencies.begin(), end = dependencies.end(); it != end; ++it) {

launcher/modplatform/modrinth/ModrinthPackExportTask.cpp

@@ -25,6 +25,7 @@
 #include "Json.h"
 #include "MMCZip.h"
 #include "minecraft/PackProfile.h"
+#include "minecraft/mod/MetadataHandler.h"
 #include "minecraft/mod/ModFolderModel.h"
 
 const QStringList ModrinthPackExportTask::PREFIXES({ "mods/", "coremods/", "resourcepacks/", "texturepacks/", "shaderpacks/" });
@@ -33,12 +34,14 @@ const QStringList ModrinthPackExportTask::FILE_EXTENSIONS({ "jar", "litemod", "z
 ModrinthPackExportTask::ModrinthPackExportTask(const QString& name,
                                                const QString& version,
                                                const QString& summary,
+                                               bool optionalFiles,
                                                InstancePtr instance,
                                                const QString& output,
                                                MMCZip::FilterFunction filter)
     : name(name)
     , version(version)
     , summary(summary)
+    , optionalFiles(optionalFiles)
     , instance(instance)
     , mcInstance(dynamic_cast<MinecraftInstance*>(instance.get()))
     , gameRoot(instance->gameRoot())
@@ -127,7 +130,8 @@ void ModrinthPackExportTask::collectHashes()
                     QCryptographicHash sha1(QCryptographicHash::Algorithm::Sha1);
                     sha1.addData(data);
 
-                    ResolvedFile resolvedFile{ sha1.result().toHex(), sha512.result().toHex(), url.toEncoded(), openFile.size() };
+                    ResolvedFile resolvedFile{ sha1.result().toHex(), sha512.result().toHex(), url.toEncoded(), openFile.size(),
+                                               mod->metadata()->side };
                     resolvedFiles[relative] = resolvedFile;
 
                     // nice! we've managed to resolve based on local metadata!
@@ -270,20 +274,33 @@ QByteArray ModrinthPackExportTask::generateIndex()
         QString path = iterator.key();
         const ResolvedFile& value = iterator.value();
 
+        QJsonObject env;
+
         // detect disabled mod
         const QFileInfo pathInfo(path);
-        if (pathInfo.suffix() == "disabled") {
+        if (optionalFiles && pathInfo.suffix() == "disabled") {
             // rename it
             path = pathInfo.dir().filePath(pathInfo.completeBaseName());
-            // ...and make it optional
-            QJsonObject env;
             env["client"] = "optional";
             env["server"] = "optional";
-            fileOut["env"] = env;
+        } else {
+            env["client"] = "required";
+            env["server"] = "required";
         }
+        switch (iterator->side) {
+            case Metadata::ModSide::ClientSide:
+                env["server"] = "unsupported";
+                break;
+            case Metadata::ModSide::ServerSide:
+                env["client"] = "unsupported";
+                break;
+            case Metadata::ModSide::UniversalSide:
+                break;
+        }
+        fileOut["env"] = env;
 
         fileOut["path"] = path;
-        fileOut["downloads"] = QJsonArray{ iterator.value().url };
+        fileOut["downloads"] = QJsonArray{ iterator->url };
 
         QJsonObject hashes;
         hashes["sha1"] = value.sha1;

launcher/modplatform/modrinth/ModrinthPackExportTask.h

@@ -31,6 +31,7 @@ class ModrinthPackExportTask : public Task {
     ModrinthPackExportTask(const QString& name,
                            const QString& version,
                            const QString& summary,
+                           bool optionalFiles,
                            InstancePtr instance,
                            const QString& output,
                            MMCZip::FilterFunction filter);
@@ -43,6 +44,7 @@ class ModrinthPackExportTask : public Task {
     struct ResolvedFile {
         QString sha1, sha512, url;
         qint64 size;
+        Metadata::ModSide side;
     };
 
     static const QStringList PREFIXES;
@@ -50,6 +52,7 @@ class ModrinthPackExportTask : public Task {
 
     // inputs
     const QString name, version, summary;
+    const bool optionalFiles;
     const InstancePtr instance;
     MinecraftInstance* mcInstance;
     const QDir gameRoot;

launcher/modplatform/modrinth/ModrinthPackIndex.cpp

@@ -27,6 +27,11 @@
 static ModrinthAPI api;
 static ModPlatform::ProviderCapabilities ProviderCaps;
 
+bool shouldDownloadOnSide(QString side)
+{
+    return side == "required" || side == "optional";
+}
+
 // https://docs.modrinth.com/api-spec/#tag/projects/operation/getProject
 void Modrinth::loadIndexedPack(ModPlatform::IndexedPack& pack, QJsonObject& obj)
 {
@@ -53,6 +58,17 @@ void Modrinth::loadIndexedPack(ModPlatform::IndexedPack& pack, QJsonObject& obj)
     modAuthor.url = api.getAuthorURL(modAuthor.name);
     pack.authors.append(modAuthor);
 
+    auto client = shouldDownloadOnSide(Json::ensureString(obj, "client_side"));
+    auto server = shouldDownloadOnSide(Json::ensureString(obj, "server_side"));
+
+    if (server && client) {
+        pack.side = "both";
+    } else if (server) {
+        pack.side = "server";
+    } else if (client) {
+        pack.side = "client";
+    }
+
     // Modrinth can have more data than what's provided by the basic search :)
     pack.extraDataLoaded = false;
 }
@@ -93,19 +109,19 @@ void Modrinth::loadExtraPackData(ModPlatform::IndexedPack& pack, QJsonObject& ob
     pack.extraDataLoaded = true;
 }
 
-void Modrinth::loadIndexedPackVersions(ModPlatform::IndexedPack& pack,
+void Modrinth::loadIndexedPackVersions(ModPlatform::IndexedPack& pack, QJsonArray& arr, const BaseInstance* inst)
-                                       QJsonArray& arr,
-                                       [[maybe_unused]] const shared_qobject_ptr<QNetworkAccessManager>& network,
-                                       const BaseInstance* inst)
 {
     QVector<ModPlatform::IndexedVersion> unsortedVersions;
-    QString mcVersion = (static_cast<const MinecraftInstance*>(inst))->getPackProfile()->getComponentVersion("net.minecraft");
+    auto profile = (dynamic_cast<const MinecraftInstance*>(inst))->getPackProfile();
+    QString mcVersion = profile->getComponentVersion("net.minecraft");
+    auto loaders = profile->getSupportedModLoaders();
 
     for (auto versionIter : arr) {
         auto obj = versionIter.toObject();
         auto file = loadIndexedPackVersion(obj);
 
-        if (file.fileId.isValid())  // Heuristic to check if the returned value is valid
+        if (file.fileId.isValid() &&
+            (!loaders.has_value() || !file.loaders || loaders.value() & file.loaders))  // Heuristic to check if the returned value is valid
             unsortedVersions.append(file);
     }
     auto orderSortPredicate = [](const ModPlatform::IndexedVersion& a, const ModPlatform::IndexedVersion& b) -> bool {
@@ -134,10 +150,23 @@ auto Modrinth::loadIndexedPackVersion(QJsonObject& obj, QString preferred_hash_t
     }
     auto loaders = Json::requireArray(obj, "loaders");
     for (auto loader : loaders) {
-        file.loaders.append(loader.toString());
+        if (loader == "neoforge")
+            file.loaders |= ModPlatform::NeoForge;
+        if (loader == "forge")
+            file.loaders |= ModPlatform::Forge;
+        if (loader == "cauldron")
+            file.loaders |= ModPlatform::Cauldron;
+        if (loader == "liteloader")
+            file.loaders |= ModPlatform::LiteLoader;
+        if (loader == "fabric")
+            file.loaders |= ModPlatform::Fabric;
+        if (loader == "quilt")
+            file.loaders |= ModPlatform::Quilt;
     }
     file.version = Json::requireString(obj, "name");
     file.version_number = Json::requireString(obj, "version_number");
+    file.version_type = ModPlatform::IndexedVersionType(Json::requireString(obj, "version_type"));
+
     file.changelog = Json::requireString(obj, "changelog");
 
     auto dependencies = Json::ensureArray(obj, "dependencies");
@@ -218,15 +247,20 @@ auto Modrinth::loadIndexedPackVersion(QJsonObject& obj, QString preferred_hash_t
     return {};
 }
 
-auto Modrinth::loadDependencyVersions([[maybe_unused]] const ModPlatform::Dependency& m, QJsonArray& arr) -> ModPlatform::IndexedVersion
+auto Modrinth::loadDependencyVersions([[maybe_unused]] const ModPlatform::Dependency& m, QJsonArray& arr, const BaseInstance* inst)
+    -> ModPlatform::IndexedVersion
 {
-    QVector<ModPlatform::IndexedVersion> versions;
+    auto profile = (dynamic_cast<const MinecraftInstance*>(inst))->getPackProfile();
+    QString mcVersion = profile->getComponentVersion("net.minecraft");
+    auto loaders = profile->getSupportedModLoaders();
 
+    QVector<ModPlatform::IndexedVersion> versions;
     for (auto versionIter : arr) {
         auto obj = versionIter.toObject();
         auto file = loadIndexedPackVersion(obj);
 
-        if (file.fileId.isValid())  // Heuristic to check if the returned value is valid
+        if (file.fileId.isValid() &&
+            (!loaders.has_value() || !file.loaders || loaders.value() & file.loaders))  // Heuristic to check if the returned value is valid
             versions.append(file);
     }
     auto orderSortPredicate = [](const ModPlatform::IndexedVersion& a, const ModPlatform::IndexedVersion& b) -> bool {

launcher/modplatform/modrinth/ModrinthPackIndex.h

@@ -26,11 +26,8 @@ namespace Modrinth {
 
 void loadIndexedPack(ModPlatform::IndexedPack& m, QJsonObject& obj);
 void loadExtraPackData(ModPlatform::IndexedPack& m, QJsonObject& obj);
-void loadIndexedPackVersions(ModPlatform::IndexedPack& pack,
+void loadIndexedPackVersions(ModPlatform::IndexedPack& pack, QJsonArray& arr, const BaseInstance* inst);
-                             QJsonArray& arr,
-                             const shared_qobject_ptr<QNetworkAccessManager>& network,
-                             const BaseInstance* inst);
 auto loadIndexedPackVersion(QJsonObject& obj, QString hash_type = "sha512", QString filename_prefer = "") -> ModPlatform::IndexedVersion;
-auto loadDependencyVersions(const ModPlatform::Dependency& m, QJsonArray& arr) -> ModPlatform::IndexedVersion;
+auto loadDependencyVersions(const ModPlatform::Dependency& m, QJsonArray& arr, const BaseInstance* inst) -> ModPlatform::IndexedVersion;
 
 }  // namespace Modrinth

launcher/modplatform/modrinth/ModrinthPackManifest.cpp

@@ -35,6 +35,7 @@
  */
 
 #include "ModrinthPackManifest.h"
+#include <QFileInfo>
 #include "Json.h"
 
 #include "modplatform/modrinth/ModrinthAPI.h"
@@ -56,8 +57,8 @@ void loadIndexedPack(Modpack& pack, QJsonObject& obj)
     pack.description = Json::ensureString(obj, "description");
     auto temp_author_name = Json::ensureString(obj, "author");
     pack.author = std::make_tuple(temp_author_name, api.getAuthorURL(temp_author_name));
-    pack.iconName = QString("modrinth_%1").arg(Json::ensureString(obj, "slug"));
     pack.iconUrl = Json::ensureString(obj, "icon_url");
+    pack.iconName = QString("modrinth_%1.%2").arg(Json::ensureString(obj, "slug"), QFileInfo(pack.iconUrl.fileName()).suffix());
 }
 
 void loadIndexedInfo(Modpack& pack, QJsonObject& obj)
@@ -128,6 +129,7 @@ auto loadIndexedVersion(QJsonObject& obj) -> ModpackVersion
 
     file.name = Json::requireString(obj, "name");
     file.version = Json::requireString(obj, "version_number");
+    file.version_type = ModPlatform::IndexedVersionType(Json::requireString(obj, "version_type"));
     file.changelog = Json::ensureString(obj, "changelog");
 
     file.id = Json::requireString(obj, "id");