Fix[code]: fixes for stuff that i missed/additional validations

app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/LauncherActivity.java

@@ -125,7 +125,8 @@ public class LauncherActivity extends BaseActivity {
         }
         String normalizedVersionId = AsyncMinecraftDownloader.normalizeVersionId(prof.lastVersionId);
         JMinecraftVersionList.Version mcVersion = AsyncMinecraftDownloader.getListedVersion(normalizedVersionId);
-        new AsyncMinecraftDownloader(this,
+        new AsyncMinecraftDownloader().start(
+                this,
                 mcVersion,
                 normalizedVersionId,
                 new ContextAwareDoneListener(this, normalizedVersionId)
@@ -133,10 +134,10 @@ public class LauncherActivity extends BaseActivity {
         return false;
     };
 
-    private final TaskCountListener mDoubleLaunchPreventionListener = (tc)->{
+    private final TaskCountListener mDoubleLaunchPreventionListener = taskCount -> {
         // Hide the notification that starts the game if there are tasks executing.
         // Prevents the user from trying to launch the game with tasks ongoing.
-        if(tc > 0) {
+        if(taskCount > 0) {
             Tools.runOnUiThread(() ->
                     mNotificationManager.cancel(NotificationUtils.NOTIFICATION_ID_GAME_START)
             );

app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/Tools.java

@@ -559,6 +559,7 @@ public final class Tools {
     private static void showError(final Context ctx, final int titleId, final String rolledMessage, final Throwable e, final boolean exitIfOk, final boolean showMore) {
         if(e instanceof ContextExecutorTask) {
             ContextExecutor.execute((ContextExecutorTask) e);
+            return;
         }
         e.printStackTrace();
 

app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/contracts/OpenDocumentWithExtension.java

@@ -14,6 +14,13 @@ import androidx.annotation.Nullable;
 // you to specify practically anything. So i made this instead.
 public class OpenDocumentWithExtension extends ActivityResultContract<Object, Uri> {
     private final String mimeType;
+
+    /**
+     * Create a new OpenDocumentWithExtension contract.
+     * If the extension provided to the constructor is not available in the device's MIME
+     * type database, the filter will default to "all types"
+     * @param extension the extension to filter by
+     */
     public OpenDocumentWithExtension(String extension) {
         String extensionMimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
         if(extensionMimeType == null) extensionMimeType = "*/*";

app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/mirrors/DownloadMirror.java

@@ -53,6 +53,10 @@ public class DownloadMirror {
         DownloadUtils.downloadFileMonitored(urlInput, outputFile, buffer, monitor);
     }
 
+    /**
+     * Check if the current download source is a mirror and not an official source.
+     * @return true if the source is a mirror, false otherwise
+     */
     public static boolean isMirrored() {
         return !LauncherPreferences.PREF_DOWNLOAD_SOURCE.equals("default");
     }
@@ -88,8 +92,14 @@ public class DownloadMirror {
 
     private static int getBaseUrlTail(String wholeUrl) throws MalformedURLException{
         int protocolNameEnd = wholeUrl.indexOf("://");
-        if(protocolNameEnd == -1) throw new MalformedURLException("No protocol");
+        if(protocolNameEnd == -1)
+            throw new MalformedURLException("No protocol, or non path-based URL");
         protocolNameEnd += 3;
-        return wholeUrl.indexOf('/', protocolNameEnd);
+        int hostnameEnd = wholeUrl.indexOf('/', protocolNameEnd);
+        if(protocolNameEnd >= wholeUrl.length() || hostnameEnd == protocolNameEnd)
+            throw new MalformedURLException("No hostname");
+        if(hostnameEnd == -1) hostnameEnd = wholeUrl.length();
+        System.out.println(protocolNameEnd +" "+ hostnameEnd);
+        return hostnameEnd;
     }
 }

app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/mirrors/MirrorTamperedException.java

@@ -18,6 +18,12 @@ public class MirrorTamperedException extends Exception implements ContextExecuto
         AlertDialog.Builder builder = new AlertDialog.Builder(activity);
         builder.setTitle(R.string.dl_tampered_manifest_title);
         builder.setMessage(Html.fromHtml(activity.getString(R.string.dl_tampered_manifest)));
+        addButtons(builder);
+        ShowErrorActivity.installRemoteDialogHandling(activity, builder);
+        builder.show();
+    }
+
+    private void addButtons(AlertDialog.Builder builder) {
         builder.setPositiveButton(R.string.dl_switch_to_official_site,(d,w)->{
             LauncherPreferences.DEFAULT_PREF.edit().putString("downloadSource", "default").apply();
             LauncherPreferences.PREF_DOWNLOAD_SOURCE = "default";
@@ -28,8 +34,6 @@ public class MirrorTamperedException extends Exception implements ContextExecuto
             LauncherPreferences.PREF_VERIFY_MANIFEST = false;
         });
         builder.setNeutralButton(android.R.string.cancel, (d,w)->{});
-        ShowErrorActivity.installRemoteDialogHandling(activity, builder);
-        builder.show();
     }
 
     @Override

app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineDownloadTask.java

@@ -88,7 +88,7 @@ public class OptiFineDownloadTask implements Runnable, Tools.DownloaderFeedback,
         if(minecraftJsonVersion == null) return false;
         try {
             synchronized (mMinecraftDownloadLock) {
-                new AsyncMinecraftDownloader(null, minecraftJsonVersion, minecraftVersion, this);
+                new AsyncMinecraftDownloader().start(null, minecraftJsonVersion, minecraftVersion, this);
                 mMinecraftDownloadLock.wait();
             }
         }catch (InterruptedException e) {

app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/modpacks/api/NotificationDownloadListener.java

@@ -26,29 +26,37 @@ public class NotificationDownloadListener implements ModloaderDownloadListener {
         if(mModLoader.requiresGuiInstallation()) {
             ModloaderInstallTracker.saveModLoader(mContext, mModLoader, downloadedFile);
             Intent mainActivityIntent = new Intent(mContext, LauncherActivity.class);
-            Tools.runOnUiThread(() -> NotificationUtils.sendBasicNotification(mContext,
-                    R.string.modpack_install_notification_title,
-                    R.string.modpack_install_notification_success,
-                    mainActivityIntent,
-                    NotificationUtils.PENDINGINTENT_CODE_DOWNLOAD_SERVICE,
-                    NotificationUtils.NOTIFICATION_ID_DOWNLOAD_LISTENER
-            ));
+            sendIntentNotification(mainActivityIntent, R.string.modpack_install_notification_success);
         }
     }
 
     @Override
     public void onDataNotAvailable() {
-        Tools.runOnUiThread(()->NotificationUtils.sendBasicNotification(mContext,
-                R.string.modpack_install_notification_title,
-                R.string.modpack_install_notification_success,
-                null,
-                NotificationUtils.PENDINGINTENT_CODE_DOWNLOAD_SERVICE,
-                NotificationUtils.NOTIFICATION_ID_DOWNLOAD_LISTENER
-        ));
+        sendEmptyNotification(R.string.modpack_install_notification_data_not_available);
     }
 
     @Override
     public void onDownloadError(Exception e) {
         Tools.showErrorRemote(mContext, R.string.modpack_install_modloader_download_failed, e);
     }
+
+    private void sendIntentNotification(Intent intent, int localeString) {
+        Tools.runOnUiThread(() -> NotificationUtils.sendBasicNotification(mContext,
+                R.string.modpack_install_notification_title,
+                localeString,
+                intent,
+                NotificationUtils.PENDINGINTENT_CODE_DOWNLOAD_SERVICE,
+                NotificationUtils.NOTIFICATION_ID_DOWNLOAD_LISTENER
+        ));
+    }
+
+    private void sendEmptyNotification(int localeString) {
+        Tools.runOnUiThread(()->NotificationUtils.sendBasicNotification(mContext,
+                R.string.modpack_install_notification_title,
+                localeString,
+                null,
+                NotificationUtils.PENDINGINTENT_CODE_DOWNLOAD_SERVICE,
+                NotificationUtils.NOTIFICATION_ID_DOWNLOAD_LISTENER
+        ));
+    }
 }

app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/tasks/AsyncMinecraftDownloader.java

@@ -48,8 +48,9 @@ public class AsyncMinecraftDownloader {
     /* Allows each downloading thread to have its own RECYCLED buffer */
     private final ConcurrentHashMap<Thread, byte[]> mThreadBuffers = new ConcurrentHashMap<>(5);
 
-    public AsyncMinecraftDownloader(Activity activity, JMinecraftVersionList.Version version, String realVersion,
-                                    @NonNull DoneListener listener){ // this was there for a reason
+    public void start(Activity activity, JMinecraftVersionList.Version version,
+                      String realVersion, // this was there for a reason
+                      @NonNull DoneListener listener) {
         sExecutorService.execute(() -> {
             try {
                 downloadGame(activity, version, realVersion);
@@ -399,10 +400,10 @@ public class AsyncMinecraftDownloader {
     }
 
     private boolean verifyManifest(File verJsonDir, JMinecraftVersionList.Version verInfo) {
-        return /*verJsonDir.exists()
+        return verJsonDir.exists()
                 && (!LauncherPreferences.PREF_CHECK_LIBRARY_SHA
                 || verInfo.sha1 == null
-                || Tools.compareSHA1(verJsonDir, verInfo.sha1));*/false;
+                || Tools.compareSHA1(verJsonDir, verInfo.sha1));
     }
 
     public static String normalizeVersionId(String versionString) {