Qortal/qortal
1
0
Fork 0
mirror of https://github.com/Qortal/qortal.git synced 2025-07-19 02:41:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

in memory to stream

Browse Source
This commit is contained in:
PhilReact 2025-06-01 20:31:36 +03:00
parent fa8b9f2cee
commit 517f7b92d5
1 changed files with 23 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
src/main/java/org/qortal/arbitrary/ArbitraryDataDigest.java
View File

@ -4,6 +4,7 @@ import org.qortal.repository.DataException;
import org.qortal.utils.Base58;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.FileSystem;
import java.nio.file.Files;
@ -25,47 +26,53 @@ public class ArbitraryDataDigest {
}
public void compute() throws IOException, DataException {
List<Path> allPaths = Files.walk(path).filter(Files::isRegularFile).sorted().collect(Collectors.toList());
List<Path> allPaths = Files.walk(path)
.filter(Files::isRegularFile)
.sorted()
.collect(Collectors.toList());
Path basePathAbsolute = this.path.toAbsolutePath();
MessageDigest sha256;
try {
sha256 = MessageDigest.getInstance("SHA-256");
} catch (NoSuchAlgorithmException e) {
throw new DataException("SHA-256 hashing algorithm unavailable");
}
for (Path path : allPaths) {
// We need to work with paths relative to the base path, to ensure the same hash
// is generated on different systems
Path relativePath = basePathAbsolute.relativize(path.toAbsolutePath());
// Exclude Qortal folder since it can be different each time
// We only care about hashing the actual user data
if (relativePath.startsWith(".qortal/")) {
continue;
}
// Account for \ VS / : Linux VS Windows
String pathString = relativePath.toString();
if(relativePath.getFileSystem().toString().contains("Windows")) {
pathString = pathString.replace("\\","/");
if (relativePath.getFileSystem().toString().contains("Windows")) {
pathString = pathString.replace("\\", "/");
}
// Hash path
byte[] filePathBytes = pathString.getBytes(StandardCharsets.UTF_8);
System.out.printf("Path: %s \n", pathString);
System.out.printf("Path Byte Array: %s \n", Arrays.toString(filePathBytes));
sha256.update(filePathBytes);
// Hash contents
byte[] fileContent = Files.readAllBytes(path);
System.out.printf("File Content: %s \n", Arrays.toString(fileContent));
sha256.update(fileContent);
try (InputStream in = Files.newInputStream(path)) {
byte[] buffer = new byte[65536]; // 64 KB
int bytesRead;
while ((bytesRead = in.read(buffer)) != -1) {
sha256.update(buffer, 0, bytesRead);
}
}
}
this.hash = sha256.digest();
}
public boolean isHashValid(byte[] hash) {
return Arrays.equals(hash, this.hash);