Misc fixes, start rewriting RomFS parts to make it in line with AesCtrBufferedInputStream

README.md

@@ -1,12 +1,12 @@
 # libKonogonka
 
-[![Build Status](https://ci.redrise.ru/api/badges/desu/libKonogonka/status.svg)](https://ci.redrise.ru/desu/libKonogonka)
+![License](https://img.shields.io/badge/License-GPLv3-blue.svg) [![Build Status](https://ci.redrise.ru/api/badges/desu/libKonogonka/status.svg)](https://ci.redrise.ru/desu/libKonogonka)
 
-Library to work with NS-specific files / filesystem images. Dedicated back end part of [konogonka](https://github.com/developersu/konogonka) ([independent src location](https://git.redrise.ru/desu/konogonka))
+Library to work with NS-specific files / filesystem images. Ex-backend of [konogonka](https://github.com/developersu/konogonka) ([independent src location](https://git.redrise.ru/desu/konogonka))
 
 ### License
 
-[GNU General Public License v3+](https://git.redrise.ru/desu/libKonogonka/LICENSE)
+[GNU General Public License v3 or higher](https://git.redrise.ru/desu/libKonogonka/LICENSE)
 
 ### Used libraries & resources
 * [Bouncy Castle](https://www.bouncycastle.org/) for Java.

src/main/java/libKonogonka/RainbowDump.java

@@ -36,14 +36,62 @@ public class RainbowDump {
 
 
     public static void hexDumpUTF8(byte[] byteArray){
+        if (byteArray == null || byteArray.length == 0)
+            return;
+
+        int k = 0;
+        System.out.printf("%s%08x  %s", ANSI_BLUE, 0, ANSI_RESET);
+        for (int i = 0; i < byteArray.length; i++) {
+            if (k == 8)
+                System.out.print("  ");
+            if (k == 16){
+                System.out.print(ANSI_GREEN+"| "+ANSI_RESET);
+                printChars(byteArray, i);
+                System.out.println();
+                System.out.printf("%s%08x  %s", ANSI_BLUE, i, ANSI_RESET);
+                k = 0;
+            }
+            System.out.printf("%02x ", byteArray[i]);
+            k++;
+        }
+        int paddingSize = 16 - (byteArray.length % 16);
+        if (paddingSize != 16) {
+            for (int i = 0; i < paddingSize; i++) {
+                System.out.print("   ");
+            }
+            if (paddingSize > 7) {
+                System.out.print("  ");
+            }
+        }
+        System.out.print(ANSI_GREEN+"| "+ANSI_RESET);
+        printChars(byteArray, byteArray.length);
+        System.out.println();
+        System.out.print(ANSI_RESET+new String(byteArray, StandardCharsets.UTF_8)+"\n");
+    }
+
+    private static void printChars(byte[] byteArray, int pointer){
+        for (int j = pointer-16; j < pointer; j++){
+            if ((byteArray[j] > 21) && (byteArray[j] < 126)) // man ascii
+                System.out.print((char) byteArray[j]);
+            else if (byteArray[j] == 0x0a)
+                System.out.print("↲"); //"␤"
+            else if (byteArray[j] == 0x0d)
+                System.out.print("←"); // "␍"
+            else
+                System.out.print(".");
+        }
+    }
+
+
+    public static void hexDumpUTF8Legacy(byte[] byteArray){
         if (byteArray == null || byteArray.length == 0)
             return;
         System.out.print(ANSI_BLUE);
         for (int i=0; i < byteArray.length; i++)
-            System.out.print(String.format("%02d-", i%100));
+            System.out.printf("%02d-", i%100);
         System.out.println(">"+ANSI_RED+byteArray.length+ANSI_RESET);
         for (byte b: byteArray)
-            System.out.print(String.format("%02x ", b));
+            System.out.printf("%02x ", b);
         System.out.println();
         System.out.print(new String(byteArray, StandardCharsets.UTF_8)+"\n");
     }

src/main/java/libKonogonka/Tools/NCA/NCAContent.java

@@ -22,7 +22,7 @@ import libKonogonka.Tools.NCA.NCASectionTableBlock.NcaFsHeader;
 import libKonogonka.Tools.PFS0.IPFS0Provider;
 import libKonogonka.Tools.PFS0.PFS0Provider;
 import libKonogonka.Tools.RomFs.IRomFsProvider;
-import libKonogonka.Tools.RomFs.RomFsEncryptedProvider;
+import libKonogonka.Tools.RomFs.RomFsProvider;
 import libKonogonka.ctraes.AesCtrBufferedInputStream;
 import libKonogonka.ctraes.AesCtrDecryptSimple;
 import libKonogonka.exceptions.EmptySectionException;
@@ -32,7 +32,6 @@ import org.apache.logging.log4j.Logger;
 import java.io.*;
 import java.nio.file.Files;
 import java.nio.file.Paths;
-import java.util.LinkedList;
 
 public class NCAContent {
     private final static Logger log = LogManager.getLogger(NCAContent.class);
@@ -43,7 +42,6 @@ public class NCAContent {
     private final NCAHeaderTableEntry ncaHeaderTableEntry;
     private final byte[] decryptedKey;
 
-    private LinkedList<byte[]> Pfs0SHA256hashes;
     private IPFS0Provider pfs0;
     private IRomFsProvider romfs;
 
@@ -59,8 +57,6 @@ public class NCAContent {
         this.ncaFsHeader = ncaFsHeader;
         this.ncaHeaderTableEntry = ncaHeaderTableEntry;
         this.decryptedKey = decryptedKey;
-        System.out.println("NCAContent pfs0offsetPosition: "+ncaOffsetPosition);
-        Pfs0SHA256hashes = new LinkedList<>();
         // If nothing to do
         if (ncaHeaderTableEntry.getMediaEndOffset() == 0)
             throw new EmptySectionException("Empty section");
@@ -91,7 +87,6 @@ public class NCAContent {
                 ncaFsHeader.getSuperBlockPFS0(),
                 ncaHeaderTableEntry.getMediaStartOffset(),
                 ncaHeaderTableEntry.getMediaEndOffset());
-        Pfs0SHA256hashes = pfs0.getPfs0SHA256hashes();
     }
 
     private void proceedPFS0Encrypted() throws Exception{
@@ -103,16 +98,15 @@ public class NCAContent {
                 decryptor,
                 ncaHeaderTableEntry.getMediaStartOffset(),
                 ncaHeaderTableEntry.getMediaEndOffset());
-        Pfs0SHA256hashes = pfs0.getPfs0SHA256hashes();
     }
 
     private void proceedRomFs() throws Exception{
         switch (ncaFsHeader.getCryptoType()){
             case 0x01:
-                proceedRomFsNotEncrypted(); // IF NO ENCRYPTION
+                proceedRomFsNotEncrypted();
                 break;
             case 0x03:
-                proceedRomFsEncrypted(); // If encrypted regular [ 0x03 ]
+                proceedRomFsEncrypted();
                 break;
             default:
                 throw new Exception("Non-supported 'Crypto type'");
@@ -125,7 +119,7 @@ public class NCAContent {
         if (decryptedKey == null)
             throw new Exception("CryptoSection03: unable to proceed. No decrypted key provided.");
 
-        this.romfs = new RomFsEncryptedProvider(
+        this.romfs = new RomFsProvider(
                 ncaFsHeader.getSuperBlockIVFC().getLvl6Offset(),
                 file,
                 ncaOffsetPosition,

src/main/java/libKonogonka/Tools/NCA/NCAProvider.java

@@ -29,8 +29,6 @@ import javax.crypto.Cipher;
 import javax.crypto.spec.SecretKeySpec;
 import java.io.*;
 import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Paths;
 import java.util.Arrays;
 import java.util.HashMap;
 

src/main/java/libKonogonka/Tools/PFS0/PFS0Provider.java

@@ -33,8 +33,7 @@ import java.nio.file.Paths;
 import java.util.Arrays;
 import java.util.LinkedList;
 
-import static libKonogonka.Converter.getLEint;
+import static libKonogonka.Converter.*;
-import static libKonogonka.Converter.getLElong;
 
 public class PFS0Provider implements IPFS0Provider{
     private final static Logger log = LogManager.getLogger(PFS0Provider.class);
@@ -295,11 +294,68 @@ public class PFS0Provider implements IPFS0Provider{
         return true;
     }
 
-    //TODO: REMOVE
+    /**
+     * @deprecated
+     * */
     @Override
-    public PipedInputStream getProviderSubFilePipedInpStream(String subFileName) throws Exception {return null;}
+    public PipedInputStream getProviderSubFilePipedInpStream(String subFileName) throws Exception {
+        for (int i = 0; i < pfs0subFiles.length; i++) {
+            if (pfs0subFiles[i].getName().equals(subFileName))
+                return getProviderSubFilePipedInpStream(i);
+        }
+        throw new Exception("No file with such name exists: "+subFileName);
+    }
+    /**
+     * @deprecated
+     * */
     @Override
-    public PipedInputStream getProviderSubFilePipedInpStream(int subFileNumber) throws Exception {return null;}
+    public PipedInputStream getProviderSubFilePipedInpStream(int subFileNumber) throws Exception {
+        PipedOutputStream streamOut = new PipedOutputStream();
+        PipedInputStream streamInp = new PipedInputStream(streamOut);
+
+        Thread workerThread = new Thread(() -> {
+            try {
+                PFS0subFile subFile = pfs0subFiles[subFileNumber];
+
+                if (encrypted)
+                    createAesCtrEncryptedBufferedInputStream();
+                else
+                    createBufferedInputStream();
+
+                long subFileSize = subFile.getSize();
+
+                long toSkip = subFile.getOffset() + mediaStartOffset * 0x200 + rawBlockDataStart;
+                if (toSkip != stream.skip(toSkip))
+                    throw new Exception("Unable to skip offset: " + toSkip);
+
+                int blockSize = 0x200;
+                if (subFileSize < 0x200)
+                    blockSize = (int) subFileSize;
+
+                long i = 0;
+                byte[] block = new byte[blockSize];
+
+                int actuallyRead;
+                while (true) {
+                    if ((actuallyRead = stream.read(block)) != blockSize)
+                        throw new Exception("Read failure. Block Size: " + blockSize + ", actuallyRead: " + actuallyRead);
+                    streamOut.write(block);
+                    i += blockSize;
+                    if ((i + blockSize) > subFileSize) {
+                        blockSize = (int) (subFileSize - i);
+                        if (blockSize == 0)
+                            break;
+                        block = new byte[blockSize];
+                    }
+                }
+            }
+            catch (Exception e){
+                log.error(e);
+            }
+        });
+        workerThread.start();
+        return streamInp;
+    }
 
 
     public LinkedList<byte[]> getPfs0SHA256hashes() {

src/main/java/libKonogonka/Tools/RomFs/Level6Header.java

@@ -27,7 +27,7 @@ import org.apache.logging.log4j.Logger;
  * This class stores information contained in Level 6 Header of the RomFS image
  * ------------------------------------
  * | Header Length (usually 0x50)     |
- * | Directory Hash Table Offset      | Not used by this library | '<< 32' to get real offset: see implementation
+ * | Directory Hash Table Offset      | Not used by this library
  * | Directory Hash Table Length      | Not used by this library
  * | Directory Metadata Table Offset  |
  * | Directory Metadata Table Length  |
@@ -42,7 +42,7 @@ public class Level6Header {
     private final static Logger log = LogManager.getLogger(Level6Header.class);
 
     private final long headerLength;
-    private long directoryHashTableOffset;
+    private final long directoryHashTableOffset;
     private final long directoryHashTableLength;
     private final long directoryMetadataTableOffset;
     private final long directoryMetadataTableLength;
@@ -61,7 +61,7 @@ public class Level6Header {
             throw new Exception("Level 6 Header section is too small");
         headerLength = getNext();
         directoryHashTableOffset = getNext();
-        directoryHashTableOffset <<= 32;
+        //directoryHashTableOffset <<= 32;
         directoryHashTableLength = getNext();
         directoryMetadataTableOffset = getNext();
         directoryMetadataTableLength = getNext();
@@ -73,7 +73,7 @@ public class Level6Header {
     }
     
     private long getNext(){
-        final long result = Converter.getLEint(headerBytes, _cursor);
+        final long result = Converter.getLElongOfInt(headerBytes, _cursor);
         _cursor += 0x8;
         return result;
     }

src/main/java/libKonogonka/Tools/RomFs/RomFsConstruct.java

@@ -0,0 +1,160 @@
+/*
+    Copyright 2018-2022 Dmitry Isaenko
+     
+    This file is part of libKonogonka.
+
+    libKonogonka is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    libKonogonka is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with libKonogonka.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package libKonogonka.Tools.RomFs;
+
+import libKonogonka.Converter;
+import libKonogonka.ctraes.AesCtrBufferedInputStream;
+import libKonogonka.ctraes.AesCtrDecryptSimple;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.nio.file.Files;
+
+public class RomFsConstruct {
+    private final static Logger log = LogManager.getLogger(RomFsConstruct.class);
+
+    private Level6Header header;
+
+    private FileSystemEntry rootEntry;
+    private final BufferedInputStream stream;
+    private int headerSize;
+    private byte[] directoryMetadataTable;
+    private byte[] fileMetadataTable;
+
+
+    private final File file;
+    private long offsetPositionInFile;
+    private final long level6Offset;
+
+    RomFsConstruct(File file,
+                   long level6Offset) throws Exception{
+        if (level6Offset < 0)
+            throw new Exception("Incorrect Level 6 Offset");
+        this.file = file;
+        this.level6Offset = level6Offset;
+        this.stream = new BufferedInputStream(Files.newInputStream(file.toPath()));
+        constructEverything();
+    }
+
+    RomFsConstruct(File file,
+                   long ncaOffset, // NCA offset position
+                   long level6Offset,
+                   AesCtrDecryptSimple decryptor,
+                   long mediaStartOffset,
+                   long mediaEndOffset
+                            ) throws Exception {
+        if (level6Offset < 0)
+            throw new Exception("Incorrect Level 6 Offset");
+        this.file = file;
+        this.level6Offset = level6Offset;
+        this.offsetPositionInFile = ncaOffset + (mediaStartOffset * 0x200);
+        // In 512-blocks
+        // In 512-blocks
+        this.stream = new AesCtrBufferedInputStream(
+                decryptor,
+                ncaOffset,
+                mediaStartOffset,
+                mediaEndOffset,
+                Files.newInputStream(file.toPath()));
+        constructEverything();
+    }
+
+    private void constructEverything() throws Exception{
+        goToStartingPosition();
+
+        constructHeader();
+
+        directoryMetadataTableLengthCheck();
+        directoryMetadataTableConstruct();
+
+        fileMetadataTableLengthCheck();
+        fileMetadataTableConstruct();
+
+        constructRootFilesystemEntry();
+
+        stream.close();
+    }
+
+    private void goToStartingPosition() throws Exception{
+        skipBytes(offsetPositionInFile + level6Offset);
+    }
+
+    private void constructHeader() throws Exception{
+        byte[] headerSizeBytes = detectHeaderSize();
+        byte[] rawDataChunk = new byte[headerSize-0x8];
+
+        if (stream.read(rawDataChunk) != headerSize-0x8)
+            throw new Exception(String.format("Failed to read header (0x%x)", (headerSize-0x8)));
+        byte[] lv6headerBytes = new byte[headerSize];
+        System.arraycopy(headerSizeBytes, 0, lv6headerBytes, 0, 0x8);
+        System.arraycopy(rawDataChunk, 0, lv6headerBytes, 0x8, headerSize-0x8);
+        this.header = new Level6Header(lv6headerBytes);
+    }
+    private byte[] detectHeaderSize() throws Exception{
+        byte[] lv6HeaderSizeRaw = new byte[0x8];
+        if (stream.read(lv6HeaderSizeRaw) != 0x8)
+            throw new Exception("Failed to read header size");
+        headerSize = Converter.getLEint(lv6HeaderSizeRaw, 0);
+        return lv6HeaderSizeRaw;
+    }
+
+    private void directoryMetadataTableLengthCheck() throws Exception{
+        if (header.getDirectoryMetadataTableLength() < 0)
+            throw new Exception("Not supported: DirectoryMetadataTableLength < 0");
+    }
+    private void directoryMetadataTableConstruct() throws Exception{
+        skipBytes(header.getDirectoryMetadataTableOffset() - headerSize);
+
+        directoryMetadataTable = new byte[(int) header.getDirectoryMetadataTableLength()];
+        if (stream.read(directoryMetadataTable) != (int) header.getDirectoryMetadataTableLength())
+            throw new Exception("Failed to read "+header.getDirectoryMetadataTableLength());
+    }
+
+    private void fileMetadataTableLengthCheck() throws Exception{
+        if (header.getFileMetadataTableLength() < 0)
+            throw new Exception("Not supported: FileMetadataTableLength < 0");
+    }
+    private void fileMetadataTableConstruct() throws Exception{
+        skipBytes(header.getFileMetadataTableOffset() - header.getFileHashTableOffset());
+
+        fileMetadataTable = new byte[(int) header.getFileMetadataTableLength()];
+        if (stream.read(fileMetadataTable) != (int) header.getFileMetadataTableLength())
+            throw new Exception("Failed to read "+header.getFileMetadataTableLength());
+    }
+
+    private void constructRootFilesystemEntry() throws Exception{
+        rootEntry = new FileSystemEntry(directoryMetadataTable, fileMetadataTable);
+    }
+
+    private void skipBytes(long size) throws Exception{
+        long mustSkip = size;
+        long skipped = 0;
+        while (mustSkip > 0){
+            skipped += stream.skip(mustSkip);
+            mustSkip = size - skipped;
+        }
+    }
+
+    Level6Header getHeader() { return header; }
+    FileSystemEntry getRootEntry(){ return rootEntry; }
+    byte[] getDirectoryMetadataTable() { return directoryMetadataTable; }
+    byte[] getFileMetadataTable() { return fileMetadataTable;}
+}

src/main/java/libKonogonka/Tools/RomFs/RomFsContentRetrieve.java

@@ -0,0 +1,125 @@
+/*
+    Copyright 2018-2022 Dmitry Isaenko
+     
+    This file is part of libKonogonka.
+
+    libKonogonka is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    libKonogonka is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with libKonogonka.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package libKonogonka.Tools.RomFs;
+
+import libKonogonka.ctraes.AesCtrBufferedInputStream;
+import libKonogonka.ctraes.AesCtrDecryptSimple;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.io.*;
+import java.nio.file.Files;
+
+public class RomFsContentRetrieve implements Runnable{
+    private final static Logger log = LogManager.getLogger(RomFsContentRetrieve.class);
+
+    private final PipedOutputStream streamOut;
+    private final long internalFileSize;
+    private final long startPosition;
+    private final BufferedInputStream bis;
+
+    RomFsContentRetrieve(File parentFile,
+                         PipedOutputStream streamOut,
+                         long internalFileRealPosition,
+                         long internalFileSize) throws Exception{
+        this.streamOut = streamOut;
+        this.internalFileSize = internalFileSize;
+
+        this.startPosition = internalFileRealPosition;
+        this.bis = new BufferedInputStream(Files.newInputStream(parentFile.toPath()));
+    }
+
+    RomFsContentRetrieve(File parentFile,
+                         PipedOutputStream streamOut,
+                         AesCtrDecryptSimple decryptor,
+                         long entryOffset,
+                         long internalFileSize,
+                         long headersFileDataOffset,        //level6Header.getFileDataOffset()
+                         long level6Offset,
+                         long ncaOffsetPosition,
+                         long mediaStartOffset,
+                         long mediaEndOffset
+                                  ) throws Exception{
+        log.fatal("Current implementation works incorrectly");
+        this.streamOut = streamOut;
+        this.internalFileSize = internalFileSize;
+
+        this.startPosition = entryOffset + mediaStartOffset*0x200 + headersFileDataOffset + level6Offset;
+
+        this.bis = new AesCtrBufferedInputStream(
+                decryptor,
+                ncaOffsetPosition,
+                mediaStartOffset,
+                mediaEndOffset,
+                Files.newInputStream(parentFile.toPath())
+        );
+    }
+
+    @Override
+    public void run() {
+        log.trace("Executing thread");
+        try {
+            skipBytesTillBegining();
+
+            int readPiece = 8388608;
+            long readFrom = 0;
+            byte[] readBuffer;
+
+            while (readFrom < internalFileSize) {
+                if (internalFileSize - readFrom < readPiece)
+                    readPiece = Math.toIntExact(internalFileSize - readFrom);
+                readBuffer = new byte[readPiece];
+                if (bis.read(readBuffer) != readPiece) {
+                    log.error("getContent(): Unable to read requested size from file.");
+                    return;
+                }
+                streamOut.write(readBuffer);
+                readFrom += readPiece;
+            }
+        } catch (Exception exception) {
+            log.error("RomFsProvider -> getContent(): Unable to provide stream", exception);
+        }
+        finally {
+            closeStreams();
+        }
+        log.trace("Thread died");
+    }
+    private void skipBytesTillBegining() throws Exception{
+        long mustSkip = startPosition;
+        long skipped = 0;
+        while (mustSkip > 0){
+            skipped += bis.skip(mustSkip);
+            mustSkip = startPosition - skipped;
+        }
+    }
+    private void closeStreams(){
+        try {
+            streamOut.close();
+        }
+        catch (IOException e){
+            log.error("RomFsProvider -> getContent(): Unable to close 'StreamOut'");
+        }
+        try {
+            bis.close();
+        }
+        catch (IOException e){
+            log.error("RomFsProvider -> getContent(): Unable to close 'StreamOut'");
+        }
+    }
+}

src/main/java/libKonogonka/Tools/RomFs/RomFsDecryptedConstruct.java

@@ -1,121 +0,0 @@
-/*
-    Copyright 2018-2022 Dmitry Isaenko
-     
-    This file is part of libKonogonka.
-
-    libKonogonka is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    libKonogonka is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with libKonogonka.  If not, see <https://www.gnu.org/licenses/>.
- */
-package libKonogonka.Tools.RomFs;
-
-import libKonogonka.Converter;
-
-import java.io.BufferedInputStream;
-import java.io.File;
-import java.nio.file.Files;
-/**
- * Construct header for RomFs and obtain root fileSystemEntry (meta information)
-* */
-class RomFsDecryptedConstruct {
-    private Level6Header header;
-
-    private FileSystemEntry rootEntry;
-    private final BufferedInputStream fileBufferedInputStream;
-    private int headerSize;
-    private byte[] directoryMetadataTable;
-    private byte[] fileMetadataTable;
-
-    RomFsDecryptedConstruct(File decryptedFsImageFile, long level6offset) throws Exception{
-        if (level6offset < 0)
-            throw new Exception("Incorrect Level 6 Offset");
-
-        fileBufferedInputStream = new BufferedInputStream(Files.newInputStream(decryptedFsImageFile.toPath()));
-        fastForwardBySkippingBytes(level6offset);
-
-        detectHeaderSize();
-        constructHeader();
-
-        fastForwardBySkippingBytes(header.getDirectoryMetadataTableOffset() - headerSize);
-
-        directoryMetadataTableLengthCheck();
-        directoryMetadataTableConstruct();
-
-        fastForwardBySkippingBytes(header.getFileMetadataTableOffset() - header.getFileHashTableOffset());
-
-        fileMetadataTableLengthCheck();
-        fileMetadataTableConstruct();
-
-        constructRootFilesystemEntry();
-
-        fileBufferedInputStream.close();
-    }
-    private void detectHeaderSize() throws Exception{
-        fileBufferedInputStream.mark(0x10);
-        byte[] lv6HeaderSizeRaw = new byte[0x8];
-        if (fileBufferedInputStream.read(lv6HeaderSizeRaw) != 0x8)
-            throw new Exception("Failed to read header size");
-        headerSize = Converter.getLEint(lv6HeaderSizeRaw, 0);
-        fileBufferedInputStream.reset();
-    }
-
-    private void constructHeader() throws Exception{
-        byte[] rawDataChunk = new byte[headerSize];
-
-        if (fileBufferedInputStream.read(rawDataChunk) != headerSize)
-            throw new Exception(String.format("Failed to read header (0x%x)", headerSize));
-
-        this.header = new Level6Header(rawDataChunk);
-    }
-
-    private void directoryMetadataTableLengthCheck() throws Exception{
-        if (header.getDirectoryMetadataTableLength() < 0)
-            throw new Exception("Not supported operation.");
-    }
-
-    private void directoryMetadataTableConstruct() throws Exception{
-        directoryMetadataTable = new byte[(int) header.getDirectoryMetadataTableLength()];
-        if (fileBufferedInputStream.read(directoryMetadataTable) != (int) header.getDirectoryMetadataTableLength())
-            throw new Exception("Failed to read "+header.getDirectoryMetadataTableLength());
-    }
-
-    private void fileMetadataTableLengthCheck() throws Exception{
-        if (header.getFileMetadataTableLength() < 0)
-            throw new Exception("Not supported operation.");
-    }
-
-    private void fileMetadataTableConstruct() throws Exception{
-        fileMetadataTable = new byte[(int) header.getFileMetadataTableLength()];
-
-        if (fileBufferedInputStream.read(fileMetadataTable) != (int) header.getFileMetadataTableLength())
-            throw new Exception("Failed to read "+header.getFileMetadataTableLength());
-    }
-
-    private void constructRootFilesystemEntry() throws Exception{
-        rootEntry = new FileSystemEntry(directoryMetadataTable, fileMetadataTable);
-        //rootEntry.printTreeForDebug();
-    }
-
-    private void fastForwardBySkippingBytes(long size) throws Exception{
-        long mustSkip = size;
-        long skipped = 0;
-        while (mustSkip > 0){
-            skipped += fileBufferedInputStream.skip(mustSkip);
-            mustSkip = size - skipped;
-        }
-    }
-
-    Level6Header getHeader() { return header; }
-    FileSystemEntry getRootEntry(){ return rootEntry; }
-    byte[] getDirectoryMetadataTable() { return directoryMetadataTable; }
-    byte[] getFileMetadataTable() { return fileMetadataTable;}
-}

src/main/java/libKonogonka/Tools/RomFs/RomFsDecryptedContentRetrieve.java

@@ -1,93 +0,0 @@
-/*
-    Copyright 2018-2022 Dmitry Isaenko
-     
-    This file is part of libKonogonka.
-
-    libKonogonka is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    libKonogonka is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with libKonogonka.  If not, see <https://www.gnu.org/licenses/>.
- */
-package libKonogonka.Tools.RomFs;
-
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-
-import java.io.BufferedInputStream;
-import java.io.File;
-import java.io.IOException;
-import java.io.PipedOutputStream;
-import java.nio.file.Files;
-
-public class RomFsDecryptedContentRetrieve implements Runnable {
-    private final static Logger log = LogManager.getLogger(RomFsDecryptedContentRetrieve.class);
-
-    private final File parentFile;
-    private final PipedOutputStream streamOut;
-    private final long internalFileRealPosition;
-    private final long internalFileSize;
-
-    RomFsDecryptedContentRetrieve(File parentFile,
-                                  PipedOutputStream streamOut,
-                                  long internalFileRealPosition,
-                                  long internalFileSize){
-        this.parentFile = parentFile;
-        this.streamOut = streamOut;
-        this.internalFileRealPosition = internalFileRealPosition;
-        this.internalFileSize = internalFileSize;
-    }
-
-    @Override
-    public void run() {
-        log.trace("Executing thread");
-        try (BufferedInputStream bis = new BufferedInputStream(Files.newInputStream(parentFile.toPath()))){
-            fastForwardBySkippingBytes(bis, internalFileRealPosition);
-
-            int readPice = 8388608; // 8mb NOTE: consider switching to 1mb 1048576
-            long readFrom = 0;
-            byte[] readBuffer;
-
-            while (readFrom < internalFileSize) {
-                if (internalFileSize - readFrom < readPice)
-                    readPice = Math.toIntExact(internalFileSize - readFrom);    // it's safe, I guarantee
-                readBuffer = new byte[readPice];
-                if (bis.read(readBuffer) != readPice) {
-                    log.error("getContent(): Unable to read requested size from file.");
-                    return;
-                }
-                streamOut.write(readBuffer);
-                readFrom += readPice;
-            }
-        } catch (Exception exception) {
-            log.error("RomFsDecryptedProvider -> getContent(): Unable to provide stream", exception);
-        }
-        finally {
-            closeStreamOut();
-        }
-        log.trace("Thread died");
-    }
-    private void fastForwardBySkippingBytes(BufferedInputStream bis, long size) throws Exception{
-        long mustSkip = size;
-        long skipped = 0;
-        while (mustSkip > 0){
-            skipped += bis.skip(mustSkip);
-            mustSkip = size - skipped;
-        }
-    }
-    private void closeStreamOut(){
-        try {
-            streamOut.close();
-        }
-        catch (IOException e){
-            log.error("RomFsDecryptedProvider -> getContent(): Unable to close 'StreamOut'");
-        }
-    }
-}

src/main/java/libKonogonka/Tools/RomFs/RomFsDecryptedProvider.java

@@ -1,76 +0,0 @@
-/*
- * Copyright 2019-2022 Dmitry Isaenko
- *
- * This file is part of libKonogonka.
- *
- * libKonogonka is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * libKonogonka is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with libKonogonka.  If not, see <https://www.gnu.org/licenses/>.
- */
-package libKonogonka.Tools.RomFs;
-
-import libKonogonka.Tools.RomFs.view.DirectoryMetaTablePlainView;
-import libKonogonka.Tools.RomFs.view.FileMetaTablePlainView;
-
-import java.io.*;
-
-public class RomFsDecryptedProvider implements IRomFsProvider{
-    private final File file;
-    private final long level6Offset;
-    private final Level6Header level6Header;
-    private final FileSystemEntry rootEntry;
-    // Used only for debug
-    private final byte[] directoryMetadataTable;
-    private final byte[] fileMetadataTable;
-
-    public RomFsDecryptedProvider(File decryptedFsImageFile, long level6offset) throws Exception{
-        RomFsDecryptedConstruct  construct = new RomFsDecryptedConstruct(decryptedFsImageFile, level6offset);
-        this.file = decryptedFsImageFile;
-        this.level6Offset = level6offset;
-        this.level6Header = construct.getHeader();
-        this.rootEntry = construct.getRootEntry();
-
-        this.directoryMetadataTable = construct.getDirectoryMetadataTable();
-        this.fileMetadataTable = construct.getFileMetadataTable();
-    }
-
-    @Override
-    public File getFile() { return file; }
-    @Override
-    public long getLevel6Offset() { return level6Offset; }
-    @Override
-    public Level6Header getHeader() { return level6Header; }
-    @Override
-    public FileSystemEntry getRootEntry() { return rootEntry; }
-    @Override
-    public PipedInputStream getContent(FileSystemEntry entry) throws Exception{
-        if (entry.isDirectory())
-            throw new Exception("Request of the binary stream for the folder entry is not supported (and doesn't make sense).");
-
-        PipedOutputStream streamOut = new PipedOutputStream();
-        PipedInputStream streamIn = new PipedInputStream(streamOut);
-        long internalFileRealPosition = level6Offset + level6Header.getFileDataOffset() + entry.getOffset();
-        long internalFileSize = entry.getSize();
-
-        Thread contentRetrievingThread = new Thread(
-                new RomFsDecryptedContentRetrieve(file, streamOut, internalFileRealPosition, internalFileSize));
-        contentRetrievingThread.start();
-        return streamIn;
-    }
-    @Override
-    public void printDebug(){
-        level6Header.printDebugInfo();
-        new DirectoryMetaTablePlainView(level6Header.getDirectoryMetadataTableLength(), directoryMetadataTable);
-        new FileMetaTablePlainView(level6Header.getFileMetadataTableLength(), fileMetadataTable);
-        rootEntry.printTreeForDebug();
-    }
-}

src/main/java/libKonogonka/Tools/RomFs/RomFsEncryptedConstruct.java

@@ -1,180 +0,0 @@
-/*
-    Copyright 2018-2022 Dmitry Isaenko
-     
-    This file is part of libKonogonka.
-
-    libKonogonka is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    libKonogonka is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with libKonogonka.  If not, see <https://www.gnu.org/licenses/>.
- */
-package libKonogonka.Tools.RomFs;
-
-import libKonogonka.ctraes.AesCtrDecryptSimple;
-
-import java.io.File;
-import java.io.RandomAccessFile;
-import java.util.Arrays;
-
-public class RomFsEncryptedConstruct {
-
-    private final long absoluteOffsetPosition;
-    private final long level6Offset;
-
-    private final RandomAccessFile raf;
-    private final AesCtrDecryptSimple decryptor;
-    private Level6Header header;
-    private byte[] directoryMetadataTable;
-    private byte[] fileMetadataTable;
-    private FileSystemEntry rootEntry;
-
-    RomFsEncryptedConstruct(File encryptedFsImageFile,
-                            long romFsOffset,
-                            long level6Offset,
-                            AesCtrDecryptSimple decryptor,
-                            long mediaStartOffset
-                            ) throws Exception {
-
-        if (level6Offset < 0)
-            throw new Exception("Incorrect Level 6 Offset");
-
-        this.raf = new RandomAccessFile(encryptedFsImageFile, "r");
-        this.level6Offset = level6Offset;
-        this.absoluteOffsetPosition = romFsOffset + (mediaStartOffset * 0x200);
-        this.decryptor = decryptor;
-        raf.seek(absoluteOffsetPosition + level6Offset);
-
-        //Go to Level 6 header position
-        decryptor.skipNext(level6Offset / 0x200);
-
-        constructHeader();
-
-        directoryMetadataTableLengthCheck();
-        directoryMetadataTableConstruct();
-
-        fileMetadataTableLengthCheck();
-        fileMetadataTableConstruct();
-
-        constructRootFilesystemEntry();
-
-        raf.close();
-    }
-
-    private void constructHeader() throws Exception{
-        // Decrypt data
-        byte[] encryptedBlock = new byte[0x200];
-        byte[] decryptedBlock;
-        if (raf.read(encryptedBlock) == 0x200)
-            decryptedBlock = decryptor.decryptNext(encryptedBlock);
-        else
-            throw new Exception("Failed to read header header (0x200 - block)");
-        this.header = new Level6Header(decryptedBlock);
-    }
-
-    private void directoryMetadataTableLengthCheck() throws Exception{
-        if (header.getDirectoryMetadataTableLength() < 0)
-            throw new Exception("Not supported: DirectoryMetadataTableLength < 0");
-    }
-    private void directoryMetadataTableConstruct() throws Exception{
-        directoryMetadataTable = readMetaTable(header.getDirectoryMetadataTableOffset(),
-                header.getDirectoryMetadataTableLength());
-    }
-
-    private void fileMetadataTableLengthCheck() throws Exception{
-        if (header.getFileMetadataTableLength() < 0)
-            throw new Exception("Not supported: FileMetadataTableLength < 0");
-    }
-    private void fileMetadataTableConstruct() throws Exception{
-        fileMetadataTable = readMetaTable(header.getFileMetadataTableOffset(),
-                header.getFileMetadataTableLength());
-    }
-
-    private void constructRootFilesystemEntry() throws Exception{
-        rootEntry = new FileSystemEntry(directoryMetadataTable, fileMetadataTable);
-    }
-    
-    private byte[] readMetaTable(long metaOffset,
-                                 long metaSize) throws Exception{
-        byte[] encryptedBlock;
-        byte[] decryptedBlock;
-        byte[] metadataTable = new byte[(int) metaSize];
-        //0
-        decryptor.reset();
-
-        long startBlock = metaOffset / 0x200;
-
-        decryptor.skipNext(level6Offset / 0x200 + startBlock);
-
-        raf.seek(absoluteOffsetPosition + level6Offset + startBlock * 0x200);
-
-        //1
-        long ignoreBytes = metaOffset - startBlock * 0x200;
-        long currentPosition = 0;
-
-        if (ignoreBytes > 0) {
-            encryptedBlock = new byte[0x200];
-            if (raf.read(encryptedBlock) == 0x200) {
-                decryptedBlock = decryptor.decryptNext(encryptedBlock);
-                // If we have extra-small file that is less than a block and even more
-                if ((0x200 - ignoreBytes) > metaSize){
-                    metadataTable = Arrays.copyOfRange(decryptedBlock, (int)ignoreBytes, 0x200);
-                    return metadataTable;
-                }
-                else {
-                    System.arraycopy(decryptedBlock, (int) ignoreBytes, metadataTable, 0, 0x200 - (int) ignoreBytes);
-                    currentPosition = 0x200 - ignoreBytes;
-                }
-            }
-            else {
-                throw new Exception("Unable to get 512 bytes from 1st bock for Directory/File Metadata Table");
-            }
-            startBlock++;
-        }
-        long endBlock = (metaSize + ignoreBytes) / 0x200 + startBlock;  // <- pointing to place where any data related to this media-block ends
-
-        //2
-        int extraData = (int) ((endBlock - startBlock)*0x200 - (metaSize + ignoreBytes));
-
-        if (extraData < 0)
-            endBlock--;
-        //3
-        while ( startBlock < endBlock ) {
-            encryptedBlock = new byte[0x200];
-            if (raf.read(encryptedBlock) == 0x200) {
-                decryptedBlock = decryptor.decryptNext(encryptedBlock);
-                System.arraycopy(decryptedBlock, 0, metadataTable, (int) currentPosition, 0x200);
-            }
-            else
-                throw new Exception("Unable to get 512 bytes from block for Directory/File Metadata Table");
-
-            startBlock++;
-            currentPosition += 0x200;
-        }
-
-        //4
-        if (extraData != 0){                 // In case we didn't get what we want
-            encryptedBlock = new byte[0x200];
-            if (raf.read(encryptedBlock) == 0x200) {
-                decryptedBlock = decryptor.decryptNext(encryptedBlock);
-                System.arraycopy(decryptedBlock, 0, metadataTable, (int) currentPosition, Math.abs(extraData));
-            }
-            else
-                throw new Exception("Unable to get 512 bytes from block for Directory/File Metadata Table");
-        }
-
-        return metadataTable;
-    }
-
-    Level6Header getHeader() { return header; }
-    FileSystemEntry getRootEntry(){ return rootEntry; }
-    byte[] getDirectoryMetadataTable() { return directoryMetadataTable; }
-    byte[] getFileMetadataTable() { return fileMetadataTable;}
-}

src/main/java/libKonogonka/Tools/RomFs/RomFsEncryptedContentRetrieve.java

@@ -1,139 +0,0 @@
-/*
-    Copyright 2018-2022 Dmitry Isaenko
-     
-    This file is part of libKonogonka.
-
-    libKonogonka is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    libKonogonka is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with libKonogonka.  If not, see <https://www.gnu.org/licenses/>.
- */
-package libKonogonka.Tools.RomFs;
-
-import libKonogonka.ctraes.AesCtrDecryptSimple;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-
-import java.io.File;
-import java.io.PipedOutputStream;
-import java.io.RandomAccessFile;
-
-public class RomFsEncryptedContentRetrieve implements Runnable{
-    private final static Logger log = LogManager.getLogger(RomFsEncryptedContentRetrieve.class);
-
-    private final File parentFile;
-    private final PipedOutputStream streamOut;
-    private final long absoluteOffsetPosition;
-    private final AesCtrDecryptSimple decryptor;
-    private final long internalFileOffset;
-    private final long internalFileSize;
-    private final long level6Offset;
-    private final long headersFileDataOffset;
-
-    RomFsEncryptedContentRetrieve(File parentFile,
-                                  PipedOutputStream streamOut,
-                                  long absoluteOffsetPosition,
-                                  AesCtrDecryptSimple decryptor,
-                                  long internalFileOffset,
-                                  long internalFileSize,
-                                  long level6Offset,
-                                  long headersFileDataOffset
-                                  ){
-        log.fatal("Current implementation works incorrectly");
-        this.parentFile = parentFile;
-        this.absoluteOffsetPosition = absoluteOffsetPosition;
-        this.streamOut = streamOut;
-        this.decryptor = decryptor;
-        this.internalFileOffset = internalFileOffset;
-        this.internalFileSize = internalFileSize;
-        this.level6Offset = level6Offset;
-        this.headersFileDataOffset = headersFileDataOffset;
-    }
-
-    @Override
-    public void run() {
-        log.trace("Executing thread");
-        try {
-            byte[] encryptedBlock;
-            byte[] decryptedBlock;
-
-            RandomAccessFile raf = new RandomAccessFile(parentFile, "r");
-
-            //0
-            long startBlock = (internalFileOffset + headersFileDataOffset) / 0x200;
-
-            decryptor.skipNext(level6Offset / 0x200 + startBlock);
-
-            // long absoluteOffsetPosition = romFsOffsetPosition + (mediaStartOffset * 0x200); // calculated in constructor
-
-            raf.seek(absoluteOffsetPosition + level6Offset + startBlock * 0x200);
-
-            //1
-            long ignoreBytes = (internalFileOffset + headersFileDataOffset) - startBlock * 0x200;
-
-            if (ignoreBytes > 0) {
-                encryptedBlock = new byte[0x200];
-                if (raf.read(encryptedBlock) == 0x200) {
-                    decryptedBlock = decryptor.decryptNext(encryptedBlock);
-                    // If we have extra-small file that is less than a block and even more
-                    if ((0x200 - ignoreBytes) > internalFileSize){
-                        streamOut.write(decryptedBlock, (int)ignoreBytes, (int) internalFileSize);    // safe cast
-                        raf.close();
-                        streamOut.close();
-                        return;
-                    }
-                    else {
-                        streamOut.write(decryptedBlock, (int) ignoreBytes, 0x200 - (int) ignoreBytes);
-                    }
-                }
-                else {
-                    throw new Exception("Unable to get 512 bytes from 1st bock");
-                }
-                startBlock++;
-            }
-            long endBlock = (internalFileSize + ignoreBytes) / 0x200 + startBlock;  // <- pointing to place where any data related to this media-block ends
-
-            //2
-            int extraData = (int) ((endBlock - startBlock)*0x200 - (internalFileSize + ignoreBytes));
-
-            if (extraData < 0)
-                endBlock--;
-            //3
-            while ( startBlock < endBlock ) {
-                encryptedBlock = new byte[0x200];
-                if (raf.read(encryptedBlock) == 0x200) {
-                    decryptedBlock = decryptor.decryptNext(encryptedBlock);
-                    streamOut.write(decryptedBlock);
-                }
-                else
-                    throw new Exception("Unable to get 512 bytes from block");
-
-                startBlock++;
-            }
-
-            //4
-            if (extraData != 0){                 // In case we didn't get what we want
-                encryptedBlock = new byte[0x200];
-                if (raf.read(encryptedBlock) == 0x200) {
-                    decryptedBlock = decryptor.decryptNext(encryptedBlock);
-                    streamOut.write(decryptedBlock, 0, Math.abs(extraData));
-                }
-                else
-                    throw new Exception("Unable to get 512 bytes from block");
-            }
-            raf.close();
-            streamOut.close();
-        } catch (Exception exception) {
-            log.error("Unable to provide stream", exception);
-        }
-        log.trace("Thread died");
-    }
-}

src/main/java/libKonogonka/Tools/RomFs/RomFsProvider.java

@@ -16,7 +16,6 @@
  * You should have received a copy of the GNU General Public License
  * along with libKonogonka.  If not, see <https://www.gnu.org/licenses/>.
  */
-
 package libKonogonka.Tools.RomFs;
 
 import libKonogonka.Tools.RomFs.view.DirectoryMetaTablePlainView;
@@ -27,36 +26,39 @@ import java.io.File;
 import java.io.PipedInputStream;
 import java.io.PipedOutputStream;
 
-public class RomFsEncryptedProvider implements IRomFsProvider{
+public class RomFsProvider implements IRomFsProvider{
     private final File file;
     private final long level6Offset;
     private final Level6Header level6Header;
     private final FileSystemEntry rootEntry;
 
-    private final byte[] key;               // Used @ createDecryptor only
+    private long ncaOffsetPosition;
-    private final byte[] sectionCTR;        // Used @ createDecryptor only
+    private byte[] key;               // Used @ createDecryptor only
-    private final long mediaStartOffset;    // Used @ createDecryptor only
+    private byte[] sectionCTR;        // Used @ createDecryptor only
-    private final long absoluteOffsetPosition;
+    private long mediaStartOffset;    // Used @ createDecryptor only
-
+    private long mediaEndOffset;
-    //private long mediaEndOffset;    // We know this, but actually never use
-
     // Used only for debug
     private final byte[] directoryMetadataTable;
     private final byte[] fileMetadataTable;
 
-    public RomFsEncryptedProvider(long level6Offset,
+    private final boolean encryptedAesCtr;
-                                  File encryptedFsImageFile,
+
-                                  long romFsOffsetPosition,
+    public RomFsProvider(File decryptedFsImageFile, long level6offset) throws Exception{
-                                  byte[] key,
+        RomFsConstruct construct = new RomFsConstruct(decryptedFsImageFile, level6offset);
-                                  byte[] sectionCTR,
+        this.file = decryptedFsImageFile;
-                                  long mediaStartOffset
+        this.level6Offset = level6offset;
-    ) throws Exception{
+        this.level6Header = construct.getHeader();
-        this(level6Offset, encryptedFsImageFile, romFsOffsetPosition, key, sectionCTR, mediaStartOffset, -1);
+        this.rootEntry = construct.getRootEntry();
+
+        this.directoryMetadataTable = construct.getDirectoryMetadataTable();
+        this.fileMetadataTable = construct.getFileMetadataTable();
+
+        this.encryptedAesCtr = false;
     }
 
-    public RomFsEncryptedProvider(long level6Offset,
+    public RomFsProvider(long level6Offset,
                          File encryptedFsImageFile,
-                                  long romFsOffsetPosition,
+                         long ncaOffsetPosition,
                          byte[] key,
                          byte[] sectionCTR,
                          long mediaStartOffset,
@@ -65,24 +67,29 @@ public class RomFsEncryptedProvider implements IRomFsProvider{
         this.key = key;
         this.sectionCTR = sectionCTR;
         this.mediaStartOffset = mediaStartOffset;
+        this.mediaEndOffset = mediaEndOffset;
+        this.ncaOffsetPosition = ncaOffsetPosition;
 
-        RomFsEncryptedConstruct construct = new RomFsEncryptedConstruct(encryptedFsImageFile,
+        RomFsConstruct construct = new RomFsConstruct(encryptedFsImageFile,
-                romFsOffsetPosition,
+                ncaOffsetPosition,
                 level6Offset,
                 createDecryptor(),
-                mediaStartOffset);
+                mediaStartOffset,
+                mediaEndOffset);
         this.file = encryptedFsImageFile;
         this.level6Offset = level6Offset;
         this.level6Header = construct.getHeader();
         this.rootEntry = construct.getRootEntry();
-        this.absoluteOffsetPosition = romFsOffsetPosition + (mediaStartOffset * 0x200);
 
         this.directoryMetadataTable = construct.getDirectoryMetadataTable();
         this.fileMetadataTable = construct.getFileMetadataTable();
+
+        this.encryptedAesCtr = true;
     }
     private AesCtrDecryptSimple createDecryptor() throws Exception{
         return new AesCtrDecryptSimple(key, sectionCTR, mediaStartOffset * 0x200);
     }
+
     @Override
     public File getFile() { return file; }
     @Override
@@ -92,7 +99,12 @@ public class RomFsEncryptedProvider implements IRomFsProvider{
     @Override
     public FileSystemEntry getRootEntry() { return rootEntry; }
     @Override
-    public PipedInputStream getContent(FileSystemEntry entry) throws Exception{
+    public PipedInputStream getContent(FileSystemEntry entry) throws Exception {
+        if (encryptedAesCtr)
+            return getContentAesCtrEncrypted(entry);
+        return getContentNonEncrypted(entry);
+    }
+    public PipedInputStream getContentAesCtrEncrypted(FileSystemEntry entry) throws Exception{
         if (entry.isDirectory())
             throw new Exception("Request of the binary stream for the folder entry is not supported (and doesn't make sense).");
 
@@ -101,19 +113,38 @@ public class RomFsEncryptedProvider implements IRomFsProvider{
         long internalFileOffset = entry.getOffset();
         long internalFileSize = entry.getSize();
 
-        Thread contentRetrievingThread = new Thread(new RomFsEncryptedContentRetrieve(
+        Thread contentRetrievingThread = new Thread(new RomFsContentRetrieve(
                 file,
                 streamOut,
-                absoluteOffsetPosition,
                 createDecryptor(),
                 internalFileOffset,
                 internalFileSize,
+                level6Header.getFileDataOffset(),
                 level6Offset,
-                level6Header.getFileDataOffset()
+                ncaOffsetPosition,
-        ));
+                mediaStartOffset,
+                mediaEndOffset));
         contentRetrievingThread.start();
         return streamIn;
     }
+    public PipedInputStream getContentNonEncrypted(FileSystemEntry entry) throws Exception{
+        if (entry.isDirectory())
+            throw new Exception("Request of the binary stream for the folder entry is not supported (and doesn't make sense).");
+
+        PipedOutputStream streamOut = new PipedOutputStream();
+        PipedInputStream streamIn = new PipedInputStream(streamOut);
+        long internalFileRealPosition = level6Offset + level6Header.getFileDataOffset() + entry.getOffset();
+        long internalFileSize = entry.getSize();
+
+        Thread contentRetrievingThread = new Thread(new RomFsContentRetrieve(
+                file,
+                streamOut,
+                internalFileRealPosition,
+                internalFileSize));
+        contentRetrievingThread.start();
+        return streamIn;
+    }
+
     @Override
     public void printDebug(){
         level6Header.printDebugInfo();

src/main/java/libKonogonka/Tools/XCI/HFS0Provider.java

@@ -22,6 +22,7 @@ import libKonogonka.Tools.ISuperProvider;
 
 import java.io.*;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
 import java.util.Arrays;
 
 import static libKonogonka.Converter.*;
@@ -30,59 +31,54 @@ import static libKonogonka.Converter.*;
  * HFS0
  * */
 public class HFS0Provider implements ISuperProvider {
+    private final String magic;
+    private final int filesCount;
+    private final byte[] padding;
+    private final int stringTableSize;
+    private final long rawFileDataStart;
 
-    private boolean magicHFS0;
+    private final HFS0File[] hfs0Files;
-    private int filesCnt;
-    private boolean paddingHfs0;
-    private int stringTableSize;
-    private long rawFileDataStart;
 
-    private HFS0File[] hfs0Files;
+    private final File file;
-
-    private File file;
 
     HFS0Provider(long hfsOffsetPosition, RandomAccessFile raf, File file) throws Exception{
         this.file = file;    // Will be used @ getHfs0FilePipedInpStream. It's a bad implementation.
         byte[] hfs0bytes = new byte[16];
-        try{
+
         raf.seek(hfsOffsetPosition);
         if (raf.read(hfs0bytes) != 16){
             throw new Exception("Read HFS0 structure failure. Can't read first 16 bytes on requested offset.");
         }
-        }
-        catch (IOException ioe){
-            throw new Exception("Read HFS0 structure failure. Can't read first 16 bytes on requested offset: "+ioe.getMessage());
-        }
-        magicHFS0 = Arrays.equals(Arrays.copyOfRange(hfs0bytes, 0, 4),new byte[]{0x48, 0x46, 0x53, 0x30});
-        filesCnt = getLEint(hfs0bytes, 0x4);
-        stringTableSize = getLEint(hfs0bytes, 8);
-        paddingHfs0 = Arrays.equals(Arrays.copyOfRange(hfs0bytes, 12, 16),new byte[4]);
 
-        hfs0Files = new HFS0File[filesCnt];
+        this.magic = new String(hfs0bytes, 0x0, 0x4, StandardCharsets.US_ASCII);
+        this.filesCount = getLEint(hfs0bytes, 0x4);
+        this.stringTableSize = getLEint(hfs0bytes, 8);
+        this.padding = Arrays.copyOfRange(hfs0bytes, 12, 16);
 
-        // TODO: IF NOT EMPTY TABLE:
+        hfs0Files = new HFS0File[filesCount];
 
-        long[] offsetHfs0files = new long[filesCnt];
+        // TODO: IF NOT EMPTY TABLE: add validation
-        long[] sizeHfs0files = new long[filesCnt];
+
-        int[] hashedRegionSizeHfs0Files = new int[filesCnt];
+        long[] offsetSubFile = new long[filesCount];
-        boolean[] paddingHfs0Files = new boolean[filesCnt];
+        long[] sizeSubFile = new long[filesCount];
-        byte[][] SHA256HashHfs0Files = new byte[filesCnt][];
+        int[] hashedRegionSubFile = new int[filesCount];
-        int[] strTableOffsets = new int[filesCnt];
+        boolean[] paddingSubFile = new boolean[filesCount];
+        byte[][] SHA256HashSubFile = new byte[filesCount][];
+        int[] stringTableOffsetSubFile = new int[filesCount];
 
         try {
             // Populate meta information regarding each file inside (?) HFS0
             byte[] metaInfoBytes = new byte[64];
-            for (int i=0; i < filesCnt; i++){
+            for (int i = 0; i < filesCount; i++){
-                if (raf.read(metaInfoBytes) != 64) {
+                if (raf.read(metaInfoBytes) != 64)
                     throw new Exception("Read HFS0 File Entry Table failure for file # "+i);
-                }
+                offsetSubFile[i] = getLElong(metaInfoBytes, 0);
-                offsetHfs0files[i] = getLElong(metaInfoBytes, 0);
+                sizeSubFile[i] = getLElong(metaInfoBytes, 8);
-                sizeHfs0files[i] = getLElong(metaInfoBytes, 8);
+                hashedRegionSubFile[i] = getLEint(metaInfoBytes, 20);
-                hashedRegionSizeHfs0Files[i] = getLEint(metaInfoBytes, 20);
+                paddingSubFile[i] = Arrays.equals(Arrays.copyOfRange(metaInfoBytes, 24, 32), new byte[8]);
-                paddingHfs0Files[i] = Arrays.equals(Arrays.copyOfRange(metaInfoBytes, 24, 32), new byte[8]);
+                SHA256HashSubFile[i] = Arrays.copyOfRange(metaInfoBytes, 32, 64);
-                SHA256HashHfs0Files[i] = Arrays.copyOfRange(metaInfoBytes, 32, 64);
 
-                strTableOffsets[i] = getLEint(metaInfoBytes, 16);
+                stringTableOffsetSubFile[i] = getLEint(metaInfoBytes, 16);
             }
             // Define location of actual data for this HFS0
             rawFileDataStart = raf.getFilePointer()+stringTableSize;
@@ -92,24 +88,24 @@ public class HFS0Provider implements ISuperProvider {
             if (raf.read(stringTbl) != stringTableSize){
                 throw new Exception("Read HFS0 String table failure. Can't read requested string table size ("+stringTableSize+")");
             }
-            String[] namesHfs0files = new String[filesCnt];
+            String[] namesSubFile = new String[filesCount];
             // Parse string table
-            for (int i=0; i < filesCnt; i++){
+            for (int i = 0; i < filesCount; i++){
                 int j = 0;
-                while (stringTbl[strTableOffsets[i]+j] != (byte)0x00)
+                while (stringTbl[stringTableOffsetSubFile[i]+j] != (byte)0x00)
                     j++;
-                namesHfs0files[i] = new String(stringTbl, strTableOffsets[i], j, StandardCharsets.UTF_8);
+                namesSubFile[i] = new String(stringTbl, stringTableOffsetSubFile[i], j, StandardCharsets.UTF_8);
             }
             //----------------------------------------------------------------------------------------------------------
             // Set files
-            for (int i=0; i < filesCnt; i++){
+            for (int i = 0; i < filesCount; i++){
                 hfs0Files[i] = new HFS0File(
-                        namesHfs0files[i],
+                        namesSubFile[i],
-                        offsetHfs0files[i],
+                        offsetSubFile[i],
-                        sizeHfs0files[i],
+                        sizeSubFile[i],
-                        hashedRegionSizeHfs0Files[i],
+                        hashedRegionSubFile[i],
-                        paddingHfs0Files[i],
+                        paddingSubFile[i],
-                        SHA256HashHfs0Files[i]
+                        SHA256HashSubFile[i]
                 );
             }
         }
@@ -118,15 +114,18 @@ public class HFS0Provider implements ISuperProvider {
         }
     }
 
-    public boolean isMagicHFS0() { return magicHFS0; }
+    public String getMagic() { return magic; }
-    public int getFilesCnt() { return filesCnt; }
+    public int getFilesCount() { return filesCount; }
-    public boolean isPaddingHfs0() { return paddingHfs0; }
+    public byte[] getPadding() { return padding; }
     public int getStringTableSize() { return stringTableSize; }
     @Override
     public long getRawFileDataStart() { return rawFileDataStart; }
     public HFS0File[] getHfs0Files() { return hfs0Files; }
     @Override
     public File getFile(){ return file; }
+    /**
+     * @deprecated
+     * */
     @Override
     public PipedInputStream getProviderSubFilePipedInpStream(int subFileNumber) throws Exception{
         PipedOutputStream streamOut = new PipedOutputStream();
@@ -140,13 +139,11 @@ public class HFS0Provider implements ISuperProvider {
             System.out.println("HFS0Provider -> getHfs0FilePipedInpStream(): Executing thread");
             try{
                 long subFileRealPosition = rawFileDataStart + hfs0Files[subFileNumber].getOffset();
-                BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
+                BufferedInputStream bis = new BufferedInputStream(Files.newInputStream(file.toPath()));
-                if (bis.skip(subFileRealPosition) != subFileRealPosition) {
+                if (bis.skip(subFileRealPosition) != subFileRealPosition)
-                    System.out.println("HFS0Provider -> getHfs0FilePipedInpStream(): Unable to skip requested offset");
+                    throw new Exception("HFS0Provider -> getHfs0FilePipedInpStream(): Unable to skip requested offset");
-                    return;
-                }
 
-                int readPice = 8388608; // 8mb NOTE: consider switching to 1mb 1048576
+                int readPice = 0x800000; // 8mb NOTE: consider switching to 1mb 1048576
 
                 long readFrom = 0;
                 long realFileSize = hfs0Files[subFileNumber].getSize();
@@ -157,17 +154,16 @@ public class HFS0Provider implements ISuperProvider {
                     if (realFileSize - readFrom < readPice)
                         readPice = Math.toIntExact(realFileSize - readFrom);    // it's safe, I guarantee
                     readBuf = new byte[readPice];
-                    if (bis.read(readBuf) != readPice) {
+                    if (bis.read(readBuf) != readPice)
-                        System.out.println("HFS0Provider -> getHfs0FilePipedInpStream(): Unable to read requested size from file.");
+                        throw new Exception("HFS0Provider -> getHfs0FilePipedInpStream(): Unable to read requested size from file.");
-                        return;
+
-                    }
                     streamOut.write(readBuf, 0, readPice);
                     readFrom += readPice;
                 }
                 bis.close();
                 streamOut.close();
             }
-            catch (IOException ioe){
+            catch (Exception ioe){
                 System.out.println("HFS0Provider -> getHfs0FilePipedInpStream(): Unable to provide stream");
                 ioe.printStackTrace();
             }
@@ -176,20 +172,17 @@ public class HFS0Provider implements ISuperProvider {
         workerThread.start();
         return streamIn;
     }
-
+    //TODO
     @Override
     public boolean exportContent(String saveToLocation, String subFileName) throws Exception {
-        return false;
+        throw new Exception("Not implemented yet");
     }
-
+    //TODO
     @Override
     public boolean exportContent(String saveToLocation, int subFileNumber) throws Exception {
-        return false;
+        throw new Exception("Not implemented yet");
     }
 
-    /**
-     * Sugar
-     * */
     @Override
     public PipedInputStream getProviderSubFilePipedInpStream(String subFileName) throws Exception {
         for (int i = 0; i < hfs0Files.length; i++){

src/main/java/libKonogonka/Tools/XCI/XCIProvider.java

@@ -76,7 +76,7 @@ public class XCIProvider{
             xciGamecardCert = new XCIGamecardCert(gamecardCertBytes);
 
             hfs0ProviderMain = new HFS0Provider(0xf000, raf, file);
-            if (hfs0ProviderMain.getFilesCnt() < 3){
+            if (hfs0ProviderMain.getFilesCount() < 3){
                 raf.close();
                 throw new Exception("XCI Can't read Gamecard certificate bytes.");
             }
@@ -106,7 +106,7 @@ public class XCIProvider{
             throw new Exception("XCI Failed file analyze for ["+file.getName()+"]\n  "+ioe.getMessage());
         }
     }
-    /* Getters */
+    /* API */
     public XCIGamecardHeader getGCHeader(){ return this.xciGamecardHeader; }
     public XCIGamecardInfo getGCInfo(){ return this.xciGamecardInfo; }
     public XCIGamecardCert getGCCert(){ return this.xciGamecardCert; }

src/main/java/libKonogonka/ctraes/AesCtrBufferedInputStream.java

@@ -172,23 +172,14 @@ public class AesCtrBufferedInputStream extends BufferedInputStream {
 
                 long leftovers = realCountOfBytesToSkip % 0x200;           // most likely will be 0;  TODO: a lot of tests
                 long bytesToSkipTillRequiredBlock = realCountOfBytesToSkip - leftovers;
-                long skipped = super.skip(bytesToSkipTillRequiredBlock);
+                skipLoop(bytesToSkipTillRequiredBlock);
-                if (bytesToSkipTillRequiredBlock != skipped)
-                    throw new IOException("Can't skip bytes. To skip: " +
-                            bytesToSkipTillRequiredBlock +
-                            ".\nActually skipped: " + skipped +
-                            ".\nLeftovers inside encrypted section: " + leftovers);
                 fillDecryptedCache();
                 pseudoPos += n;
                 pointerInsideDecryptedSection = (int) leftovers;
                 return n;
             }
             log.trace("4. Pointer Inside + End Position Outside Encrypted Section ("+pseudoPos+"-"+(pseudoPos+n)+")");
-            long skipped = super.skip(realCountOfBytesToSkip);
+            skipLoop(realCountOfBytesToSkip);
-            if (realCountOfBytesToSkip != skipped)
-                throw new IOException("Can't skip bytes. To skip: " +
-                        realCountOfBytesToSkip +
-                        ".\nActually skipped: " + skipped);
             pseudoPos += n;
             pointerInsideDecryptedSection = 0;
             return n;
@@ -217,12 +208,20 @@ public class AesCtrBufferedInputStream extends BufferedInputStream {
             return n;
         }
         log.trace("6. Not encrypted ("+pseudoPos+"-"+(pseudoPos+n)+")");
-        long skipped = super.skip(n);
+        skipLoop(n);
         pseudoPos += n;
         pointerInsideDecryptedSection = 0;
-        return skipped;
+        return n;
+    }
+    private void skipLoop(long size) throws IOException{
+        long mustSkip = size;
+        long skipped = 0;
+        while (mustSkip > 0){
+            skipped += super.skip(mustSkip);
+            mustSkip = size - skipped;
+            log.trace("Skip loop: skipped: "+skipped+"\tmustSkip "+mustSkip);
+        }
     }
-
     @Override
     public synchronized int read() throws IOException {
         byte[] b = new byte[1];

src/test/java/libKonogonka/RomFsDecrypted/RomFsDecryptedTest.java

@@ -21,7 +21,7 @@ package libKonogonka.RomFsDecrypted;
 import java.io.File;
 import java.nio.file.Path;
 
-import libKonogonka.Tools.RomFs.RomFsDecryptedProvider;
+import libKonogonka.Tools.RomFs.RomFsProvider;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
@@ -36,7 +36,7 @@ public class RomFsDecryptedTest {
     private static final String decryptedFileAbsolutePath = "./FilesForTests/NCAContent_0 [lv6 147456].bin";
     private File decryptedFile;
     long lv6offset;
-    RomFsDecryptedProvider provider;
+    RomFsProvider provider;
 
     @Disabled
     @DisplayName("RomFsDecryptedProvider: tests")
@@ -55,7 +55,7 @@ public class RomFsDecryptedTest {
         lv6offset = Long.parseLong(decryptedFile.getName().replaceAll("(^.*lv6\\s)|(]\\.bin)", ""));
     }
     void makeProvider() throws Exception{
-        provider = new RomFsDecryptedProvider(decryptedFile, lv6offset);
+        provider = new RomFsProvider(decryptedFile, lv6offset);
     }
 
 /*

src/test/java/libKonogonka/RomFsDecrypted/RomFsEncryptedTest.java

@@ -117,7 +117,7 @@ public class RomFsEncryptedTest {
 
         exportFolderContent(entry, "/tmp/brandnew");
         //----------------------------------------------------------------------
-        exportFolderContentLegacy(entry, "/tmp/legacy");
+        // exportFolderContentLegacy(entry, "/tmp/legacy");
     }
 
     private void exportFolderContent(FileSystemEntry entry, String saveToLocation) throws Exception{
@@ -195,7 +195,7 @@ public class RomFsEncryptedTest {
     private void exportSingleFileLegacy(FileSystemEntry entry, String saveToLocation) throws Exception {
         File contentFile = new File(saveToLocation + entry.getName());
 
-        BufferedOutputStream extractedFileBOS = new BufferedOutputStream(new FileOutputStream(contentFile));
+        BufferedOutputStream extractedFileBOS = new BufferedOutputStream(Files.newOutputStream(contentFile.toPath()));
         PipedInputStream pis = ncaProvider.getNCAContentProvider(1).getRomfs().getContent(entry);
 
         byte[] readBuf = new byte[0x200]; // 8mb NOTE: consider switching to 1mb 1048576

src/test/java/libKonogonka/RomFsDecrypted/XciTest.java

@@ -0,0 +1,66 @@
+/*
+    Copyright 2018-2022 Dmitry Isaenko
+     
+    This file is part of libKonogonka.
+
+    libKonogonka is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    libKonogonka is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with libKonogonka.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package libKonogonka.RomFsDecrypted;
+
+import libKonogonka.Tools.XCI.XCIProvider;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+
+// log.fatal("Configuration File Defined To Be :: "+System.getProperty("log4j.configurationFile"));
+
+public class XciTest {
+    private static final String xci_header_keyFileLocation = "./FilesForTests/xci_header_key.txt";
+    private static final String decryptedFileAbsolutePath = "./FilesForTests/sample.xci";
+    private File xciFile;
+    XCIProvider provider;
+    String xci_header_key;
+
+    @Disabled
+    @DisplayName("RomFsDecryptedProvider: tests")
+    @Test
+    void romFsValidation() throws Exception{
+        makeFile();
+        getXciHeaderKey();
+        makeProvider();
+    }
+
+    void getXciHeaderKey() throws Exception{
+        BufferedReader br = new BufferedReader(new FileReader(xci_header_keyFileLocation));
+        xci_header_key = br.readLine();
+        br.close();
+
+        if (xci_header_key == null)
+            throw new Exception("Unable to retrieve xci_header_key");
+
+        xci_header_key = xci_header_key.trim();
+    }
+
+    void makeFile(){
+        xciFile = new File(decryptedFileAbsolutePath);
+    }
+
+    void makeProvider() throws Exception{
+        provider = new XCIProvider(xciFile, xci_header_key);
+    }
+}