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Check the hash of the exiting .h3 instead of just checking the length. Check BEFORE getting the new file.

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This commit is contained in:
Maschell 2018-12-06 16:04:35 +01:00
parent e8236e86d2
commit 7425e6e904
1 changed files with 21 additions and 7 deletions
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28
src/de/mas/wiiu/jnus/implementations/NUSDataProvider.java
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@ -19,11 +19,13 @@ package de.mas.wiiu.jnus.implementations;
import java.io.File; import java.io.File;
import java.io.IOException; import java.io.IOException;
import java.io.InputStream; import java.io.InputStream;
import java.util.Arrays;
import de.mas.wiiu.jnus.NUSTitle; import de.mas.wiiu.jnus.NUSTitle;
import de.mas.wiiu.jnus.Settings; import de.mas.wiiu.jnus.Settings;
import de.mas.wiiu.jnus.entities.content.Content; import de.mas.wiiu.jnus.entities.content.Content;
import de.mas.wiiu.jnus.utils.FileUtils; import de.mas.wiiu.jnus.utils.FileUtils;
import de.mas.wiiu.jnus.utils.HashUtil;
import de.mas.wiiu.jnus.utils.Utils; import de.mas.wiiu.jnus.utils.Utils;
import lombok.Getter; import lombok.Getter;
import lombok.NonNull; import lombok.NonNull;
@ -65,26 +67,38 @@ public abstract class NUSDataProvider {
* @param content * @param content
* The content of which the h3 hashes should be saved * The content of which the h3 hashes should be saved
* @param outputFolder * @param outputFolder
* @return
* @throws IOException * @throws IOException
*/ */
public void saveContentH3Hash(@NonNull Content content, @NonNull String outputFolder) throws IOException { public void saveContentH3Hash(@NonNull Content content, @NonNull String outputFolder) throws IOException {
if (!content.isHashed()) { if (!content.isHashed()) {
return; return;
} }
String h3Filename = String.format("%08X%s", content.getID(), Settings.H3_EXTENTION);
File output = new File(outputFolder + File.separator + h3Filename);
if (output.exists()) {
if (Arrays.equals(content.getSHA2Hash(), HashUtil.hashSHA1(output))) {
log.info(h3Filename + " already exists");
return;
} else {
if (Arrays.equals(content.getSHA2Hash(), Arrays.copyOf(HashUtil.hashSHA256(output), 20))) { // 0005000c1f941200 used sha256 instead of SHA1
log.info(h3Filename + " already exists");
return;
}
log.warning(h3Filename + " already exists but hash is differrent than expected.");
}
}
byte[] hash = getContentH3Hash(content); byte[] hash = getContentH3Hash(content);
if (hash == null || hash.length == 0) { if (hash == null || hash.length == 0) {
return; return;
} }
String h3Filename = String.format("%08X%s", content.getID(), Settings.H3_EXTENTION);
File output = new File(outputFolder + File.separator + h3Filename);
if (output.exists() && output.length() == hash.length) {
log.info(h3Filename + " already exists");
return;
}
log.info("Saving " + h3Filename + " "); log.warning("Saving " + h3Filename + " ");
FileUtils.saveByteArrayToFile(output, hash); FileUtils.saveByteArrayToFile(output, hash);
} }
/** /**