Wrap wrapper with buffer

app/src/main/java/com/topjohnwu/magisk/asyncs/ProcessRepoZip.java

@@ -11,6 +11,7 @@ import android.widget.Toast;
 
 import com.topjohnwu.magisk.FlashActivity;
 import com.topjohnwu.magisk.R;
+import com.topjohnwu.magisk.container.InputStreamWrapper;
 import com.topjohnwu.magisk.utils.Shell;
 import com.topjohnwu.magisk.utils.Utils;
 import com.topjohnwu.magisk.utils.WebService;
@@ -116,7 +117,7 @@ public class ProcessRepoZip extends ParallelTask<Void, Object, Boolean> {
                     break;
             } while (true);
 
-            InputStream in = new ProgressUpdateInputStream(conn.getInputStream());
+            InputStream in = new BufferedInputStream(new ProgressInputStream(conn.getInputStream()));
 
             // Temp files
             File temp1 = new File(activity.getCacheDir(), "1.zip");
@@ -186,9 +187,9 @@ public class ProcessRepoZip extends ParallelTask<Void, Object, Boolean> {
         return this;
     }
 
-    private class ProgressUpdateInputStream extends BufferedInputStream {
+    private class ProgressInputStream extends InputStreamWrapper {
 
-        ProgressUpdateInputStream(@NonNull InputStream in) {
+        ProgressInputStream(InputStream in) {
             super(in);
         }
 

app/src/main/java/com/topjohnwu/magisk/container/InputStreamWrapper.java

@@ -0,0 +1,59 @@
+package com.topjohnwu.magisk.container;
+
+import android.support.annotation.NonNull;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+public class InputStreamWrapper extends InputStream {
+    private InputStream in;
+
+    public InputStreamWrapper(InputStream in) {
+        this.in = in;
+    }
+
+    @Override
+    public int available() throws IOException {
+        return in.available();
+    }
+
+    @Override
+    public void close() throws IOException {
+        in.close();
+    }
+
+    @Override
+    public synchronized void mark(int readlimit) {
+        in.mark(readlimit);
+    }
+
+    @Override
+    public boolean markSupported() {
+        return in.markSupported();
+    }
+
+    @Override
+    public synchronized int read() throws IOException {
+        return in.read();
+    }
+
+    @Override
+    public int read(@NonNull byte[] b) throws IOException {
+        return read(b, 0, b.length);
+    }
+
+    @Override
+    public synchronized int read(@NonNull byte[] b, int off, int len) throws IOException {
+        return in.read(b, off, len);
+    }
+
+    @Override
+    public synchronized void reset() throws IOException {
+        in.reset();
+    }
+
+    @Override
+    public long skip(long n) throws IOException {
+        return in.skip(n);
+    }
+}