78 lines
2.7 KiB
Java
78 lines
2.7 KiB
Java
/*
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Copyright 2019-2022 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.NSO;
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import libKonogonka.aesctr.InFileStreamProducer;
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import java.io.BufferedInputStream;
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import java.io.File;
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public class NSO0Provider {
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private final InFileStreamProducer producer;
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private final NSO0Header header;
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/* Encrypted */
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public NSO0Provider(InFileStreamProducer producer) throws Exception {
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this.producer = producer;
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try (BufferedInputStream stream = producer.produce()){
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byte[] knownStartingBytes = new byte[0x100];
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if (0x100 != stream.read(knownStartingBytes))
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throw new Exception("Reading stream suddenly ended while trying to read starting 0x100 bytes");
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this.header = new NSO0Header(knownStartingBytes);
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}
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}
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/* Not Encrypted */
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public NSO0Provider(File file) throws Exception{
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this(file, 0);
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}
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public NSO0Provider(File file, long offsetPosition) throws Exception {
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this.producer = new InFileStreamProducer(file, offsetPosition);
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try (BufferedInputStream stream = producer.produce()){
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if (offsetPosition != stream.skip(offsetPosition))
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throw new Exception("Can't skip bytes prior NSO0 offset");
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byte[] knownStartingBytes = new byte[0x100];
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if (0x100 != stream.read(knownStartingBytes))
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throw new Exception("Reading stream suddenly ended while trying to read starting 0x100 bytes");
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this.header = new NSO0Header(knownStartingBytes);
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}
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}
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public NSO0Header getHeader() {
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return header;
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}
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public void exportAsDecompressedNSO0(String saveToLocation) throws Exception{
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NSO0Unpacker.unpack(header, producer, saveToLocation);
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}
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public NSO0Raw getAsDecompressedNSO0() throws Exception{
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return NSO0Unpacker.getNSO0Raw(header, producer);
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}
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/**
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* Prints header.printDebug()
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* */
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public void printDebug(){
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header.printDebug();
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}
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}
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