136 lines
4.9 KiB
Java
136 lines
4.9 KiB
Java
/*
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Copyright 2019-2023 Dmitry Isaenko
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This file is part of libKonogonka.
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libKonogonka is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libKonogonka is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with libKonogonka. If not, see <https://www.gnu.org/licenses/>.
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*/
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package libKonogonka.Tools.other.System2.ini1;
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import libKonogonka.Tools.other.System2.KernelMap;
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import libKonogonka.Tools.other.System2.System2Header;
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import libKonogonka.ctraesclassic.AesCtrClassicBufferedInputStream;
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import libKonogonka.ctraesclassic.AesCtrDecryptClassic;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import java.io.BufferedOutputStream;
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import java.io.File;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.ArrayList;
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import java.util.List;
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public class Ini1Provider {
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private final static Logger log = LogManager.getLogger(Ini1Provider.class);
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private final System2Header system2Header;
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private final String pathToFile;
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private final KernelMap kernelMap;
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private Ini1Header ini1Header;
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private List<Kip1> kip1List;
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private AesCtrClassicBufferedInputStream stream;
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public Ini1Provider(System2Header system2Header, String pathToFile, KernelMap kernelMap) throws Exception{
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this.system2Header = system2Header;
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this.pathToFile = pathToFile;
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this.kernelMap = kernelMap;
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makeStream();
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makeHeader();
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collectKips();
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}
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private void makeStream() throws Exception{
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Path filePath = Paths.get(pathToFile);
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long toSkip = 0x200 + kernelMap.getIni1Offset();
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AesCtrDecryptClassic decryptor = new AesCtrDecryptClassic(system2Header.getKey(), system2Header.getSection0Ctr());
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stream = new AesCtrClassicBufferedInputStream(decryptor,
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0x200,
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Files.size(filePath),
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Files.newInputStream(filePath),
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Files.size(filePath));
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if (toSkip != stream.skip(toSkip))
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throw new Exception("Unable to skip offset: "+toSkip);
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}
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private void makeHeader() throws Exception{
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byte[] headerBytes = new byte[0x10];
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if (0x10 != stream.read(headerBytes))
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throw new Exception("Unable to read header bytes");
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ini1Header = new Ini1Header(headerBytes);
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}
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private void collectKips() throws Exception{
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kip1List = new ArrayList<>();
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long skipTillNextKip1 = 0;
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for (int i = 0; i < ini1Header.getKipNumber(); i++){
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if (skipTillNextKip1 != stream.skip(skipTillNextKip1))
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throw new Exception("Unable to skip bytes till next KIP1 header");
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byte[] kip1bytes = new byte[0x100];
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if (0x100 != stream.read(kip1bytes))
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throw new Exception("Unable to read KIP1 data ");
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Kip1 kip1 = new Kip1(kip1bytes);
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kip1List.add(kip1);
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skipTillNextKip1 = kip1.getTextSegmentHeader().getSizeAsDecompressed() +
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kip1.getRoDataSegmentHeader().getSizeAsDecompressed() +
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kip1.getDataSegmentHeader().getSizeAsDecompressed();
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}
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}
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public Ini1Header getIni1Header() { return ini1Header; }
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public List<Kip1> getKip1List() { return kip1List; }
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public boolean export(String saveTo) throws Exception{
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makeStream();
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File location = new File(saveTo);
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location.mkdirs();
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try (BufferedOutputStream extractedFileBOS = new BufferedOutputStream(
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Files.newOutputStream(Paths.get(saveTo+File.separator+"INI1.bin")))){
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long iniSize = ini1Header.getSize();
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int blockSize = 0x200;
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if (iniSize < 0x200)
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blockSize = (int) iniSize;
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long i = 0;
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byte[] block = new byte[blockSize];
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int actuallyRead;
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while (true) {
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if ((actuallyRead = stream.read(block)) != blockSize)
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throw new Exception("Read failure. Block Size: "+blockSize+", actuallyRead: "+actuallyRead);
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extractedFileBOS.write(block);
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i += blockSize;
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if ((i + blockSize) > iniSize) {
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blockSize = (int) (iniSize - i);
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if (blockSize == 0)
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break;
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block = new byte[blockSize];
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}
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}
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}
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catch (Exception e){
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log.error("File export failure", e);
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return false;
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}
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return true;
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}
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}
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