Add support for the "LocalBackup" format

src/de/mas/wiiu/jnus/NUSTitleLoaderLocalBackup.java

@@ -0,0 +1,59 @@
+/****************************************************************************
+ * Copyright (C) 2016-2019 Maschell
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ ****************************************************************************/
+
+package de.mas.wiiu.jnus;
+
+import de.mas.wiiu.jnus.entities.Ticket;
+import de.mas.wiiu.jnus.implementations.NUSDataProvider;
+import de.mas.wiiu.jnus.implementations.NUSDataProviderLocalBackup;
+
+public final class NUSTitleLoaderLocalBackup extends NUSTitleLoader {
+
+    private NUSTitleLoaderLocalBackup() {
+        super();
+    }
+
+    public static NUSTitle loadNUSTitle(String inputPath) throws Exception {
+        return loadNUSTitle(inputPath, (short) Settings.LATEST_TMD_VERSION);
+    }
+
+    public static NUSTitle loadNUSTitle(String inputPath, short titleVersion) throws Exception {
+        return loadNUSTitle(inputPath, titleVersion, null);
+    }
+
+    public static NUSTitle loadNUSTitle(String inputPath, short titleVersion, Ticket ticket) throws Exception {
+        NUSTitleLoader loader = new NUSTitleLoaderLocalBackup();
+        NUSTitleConfig config = new NUSTitleConfig();
+
+        if (ticket != null) {
+            config.setTicket(ticket);
+        } else {
+            config.setNoDecryption(true);
+        }
+
+        config.setVersion(titleVersion);
+        config.setInputPath(inputPath);
+
+        return loader.loadNusTitle(config);
+    }
+
+    @Override
+    protected NUSDataProvider getDataProvider(NUSTitle title, NUSTitleConfig config) {
+        return new NUSDataProviderLocalBackup(title, config.getInputPath(), (short) config.getVersion());
+    }
+
+}

src/de/mas/wiiu/jnus/implementations/NUSDataProviderLocalBackup.java

@@ -0,0 +1,94 @@
+package de.mas.wiiu.jnus.implementations;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.util.Optional;
+
+import de.mas.wiiu.jnus.NUSTitle;
+import de.mas.wiiu.jnus.Settings;
+import de.mas.wiiu.jnus.entities.content.Content;
+import de.mas.wiiu.jnus.implementations.NUSDataProvider;
+import de.mas.wiiu.jnus.utils.StreamUtils;
+import lombok.Getter;
+
+public class NUSDataProviderLocalBackup extends NUSDataProvider {
+    @Getter private final String localPath;
+    private final short titleVersion;
+
+    public NUSDataProviderLocalBackup(NUSTitle nustitle, String localPath) {
+        this(nustitle, localPath, (short) Settings.LATEST_TMD_VERSION);
+    }
+
+    public NUSDataProviderLocalBackup(NUSTitle nustitle, String localPath, short version) {
+        super(nustitle);
+        this.localPath = localPath;
+        this.titleVersion = version;
+    }
+
+    private String getFilePathOnDisk(Content c) {
+        return getLocalPath() + File.separator + c.getFilename();
+    }
+
+    @Override
+    public InputStream getInputStreamFromContent(Content content, long offset, Optional<Long> size) throws IOException {
+        File filepath = new File(getFilePathOnDisk(content));
+        if (!filepath.exists()) {
+            return null;
+        }
+        InputStream in = new FileInputStream(filepath);
+        StreamUtils.skipExactly(in, offset);
+        return in;
+    }
+
+    @Override
+    public byte[] getContentH3Hash(Content content) throws IOException {
+        String h3Path = getLocalPath() + File.separator + String.format("%08X.h3", content.getID());
+        File h3File = new File(h3Path);
+        if (!h3File.exists()) {
+            return new byte[0];
+        }
+        return Files.readAllBytes(h3File.toPath());
+    }
+
+    @Override
+    public byte[] getRawTMD() throws IOException {
+        String inputPath = getLocalPath();
+        String tmdPath = inputPath + File.separator + Settings.TMD_FILENAME;
+        if (titleVersion != Settings.LATEST_TMD_VERSION) {
+            tmdPath = inputPath + File.separator + "v" + titleVersion + File.separator + Settings.TMD_FILENAME;
+        }
+        File tmdFile = new File(tmdPath);
+        return Files.readAllBytes(tmdFile.toPath());
+    }
+
+    @Override
+    public byte[] getRawTicket() throws IOException {
+        String inputPath = getLocalPath();
+        String ticketPath = inputPath + File.separator + Settings.TICKET_FILENAME;
+        File ticketFile = new File(ticketPath);
+        return Files.readAllBytes(ticketFile.toPath());
+    }
+
+    @Override
+    public byte[] getRawCert() throws IOException {
+        String inputPath = getLocalPath();
+        String certPath = inputPath + File.separator + Settings.CERT_FILENAME;
+        File certFile = new File(certPath);
+        return Files.readAllBytes(certFile.toPath());
+    }
+
+    @Override
+    public void cleanup() throws IOException {
+        // We don't need this
+    }
+
+    @Override
+    public String toString() {
+        String titleVersionString = titleVersion == Settings.LATEST_TMD_VERSION ? "latest" : Short.toString(titleVersion);
+        return "NUSDataProviderLocalBackup [localPath=" + localPath + ", titleVersion=" + titleVersionString + "]";
+    }
+
+}