Accessing SMB2.1 or SMB3 resources from java?

Question

Since Windows 2012R2 no longer supports SMB1 without any hacks in any case, have any of them been successful in working with SMB resources in Java, where only SMB2.1 or SMB3 are supported? the JCIFS library is apparently SMB1, so it is missing. I see that Microsoft has a Java library for Azure, but it seems to be using services, not SMB.

Answer 1

I found this package that can work with SMB2 and SMB3 named smbj Take a look at this: https://github.com/hierynomus/smbj

Answer 2

Visuality Systems JNQ, Java- SMB, 3.1.1. Java 1.4, . SMB - , .

Answer 3

@Breakidi, hierynomus/smbj v0.2.0 Android SMB2. , SMB2, SMB3, SMB2, , , .

SMB2 , SMB2 SMB3 . SMB2 SMB3.

BouncyCastle/Spongycastle

Spongycastle ( , - Android), , - MD4 classpath. , SMB:

import org.spongycastle.jce.provider.BouncyCastleProvider;
import java.security.Security;
<...>
static {
    Security.addProvider(new BouncyCastleProvider());
}

, openFile DiskShare ( ):

// required imports
import com.hierynomus.msdtyp.AccessMask;
import com.hierynomus.msfscc.FileAttributes;
import com.hierynomus.mssmb2.SMB2CreateDisposition;
import com.hierynomus.mssmb2.SMB2CreateOptions;
import com.hierynomus.mssmb2.SMB2ShareAccess;
import com.hierynomus.smbj.SMBClient;
import com.hierynomus.smbj.SmbConfig;
import com.hierynomus.smbj.auth.AuthenticationContext;
import com.hierynomus.smbj.common.SMBApiException;
import com.hierynomus.smbj.connection.Connection;
import com.hierynomus.smbj.session.Session;
import com.hierynomus.smbj.share.DiskShare;
import com.hierynomus.smbj.share.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.HashSet;
...
// connection params
String sambaDomain = null; // can be null
String sambaUsername = "iamuploader";
String sambaPass = "mysecret";
String sambaIP = "192.168.1.236";
String sambaSharedPath = "sharedfolder";

...
// upload method
// usage: upload("file/whithin/folder.txt", fileBytes);
public void upload(String filename, byte[] bytes) throws IOException {

    SmbConfig cfg = SmbConfig.builder().build();
    SMBClient client = new SMBClient(cfg);
    Connection connection = client.connect(sambaIP);
    Session session = connection.authenticate(new AuthenticationContext(sambaUsername, sambaPass.toCharArray(), sambaDomain));
    DiskShare share = (DiskShare) session.connectShare(sambaSharedPath);

    // this is com.hierynomus.smbj.share.File !
    File f = null;
    int idx = filename.lastIndexOf("/");

    // if file is in folder(s), create them first
    if(idx > -1) {
        String folder = filename.substring(0, idx);
        try {
            if(!share.folderExists(folder)) share.mkdir(folder);
        } catch (SMBApiException ex) {
            throw new IOException(ex);
        }

    }

    // I am creating file with flag FILE_CREATE, which will throw if file exists already
    if(!share.fileExists(filename)){
        f = share.openFile(filename,
                new HashSet<>(Arrays.asList(AccessMask.GENERIC_ALL)),
                new HashSet<>(Arrays.asList(FileAttributes.FILE_ATTRIBUTE_NORMAL)),
                SMB2ShareAccess.ALL,
                SMB2CreateDisposition.FILE_CREATE,
                new HashSet<>(Arrays.asList(SMB2CreateOptions.FILE_DIRECTORY_FILE))
        );
    }

    if(f == null) return null;

    OutputStream os = f.getOutputStream();
    os.write(bytes);
    os.close();
}

Answer 4

hierynomus/smbj v0.3.0, , "ClassNotFoundException: sun.security.provider.MD4", .

SmbConfig cfg = SmbConfig.builder().
                withMultiProtocolNegotiate(true).
                withSecurityProvider(new JceSecurityProvider(new BouncyCastleProvider())).
                build();
SMBClient client = new SMBClient(cfg);