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Code Issues Releases Wiki Activity

Detect data corruption caused by sshfs 3.x and abort transfer

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This commit is contained in:
Albert Vaca 2017-08-06 18:09:55 +02:00
parent 1cfddd409d
commit 83c8a30a71
1 changed files with 29 additions and 0 deletions
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29
src/org/kde/kdeconnect/Plugins/SftpPlugin/SimpleSftpServer.java
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@ -48,7 +48,10 @@ import org.kde.kdeconnect.Helpers.RandomHelper;
import org.kde.kdeconnect.Helpers.SecurityHelpers.SslHelper;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
@ -215,6 +218,32 @@ class SimpleSftpServer {
this.file = file;
}
@Override
public OutputStream createOutputStream(long offset) throws IOException {
if (!isWritable()) {
throw new IOException("No write permission : " + file.getName());
}
final RandomAccessFile raf = new RandomAccessFile(file, "rw");
try {
if (offset < raf.length()) {
throw new IOException("Your SSHFS is bugged"); //SSHFS 3.0 and 3.2 cause data corruption, abort the transfer if this happens
}
raf.setLength(offset);
raf.seek(offset);
return new FileOutputStream(raf.getFD()) {
public void close() throws IOException {
super.close();
raf.close();
}
};
} catch (IOException e) {
raf.close();
throw e;
}
}
@Override
public boolean delete() {
//Log.e("Sshd", "deleting file");