java - 使用 Kerberos 连接到 SMB 共享时出现 KrbException "Message Stream Modified (41)"

Question

我在使用 JCifs(Kerberos 扩展版本 1.3.17)执行文件管理时遇到了一些 Kerberos 身份验证问题

这是我当前的 krb5.conf 配置:

[libdefaults]
    default_realm = <REALM_NAME_UPPERCASE>
    udp_preference_limit = 1
[realms]
    <REALM_NAME_UPPERCASE> = {
        kdc = <DOMAIN_NAME_UPPERCASE>:88
        admin_server = <DOMAIN_NAME_UPPERCASE>
        default_domain = <DOMAIN_NAME_UPPERCASE>
    }
[domain_realm]
    .<domain_name> = <REALM_NAME_UPPERCASE>
    <domain_name> = <REALM_NAME_UPPERCASE>
[appdefaults]
    kinit = {
        renewable = true
        forwardable = true
    }

这是对用户进行身份验证然后尝试在网络中的文件服务器上查找文件的代码:

public static void main (String[] args) throws Exception {
    Subject subject = new Subject();
    System.setProperty("java.security.krb5.conf", "C:/krb5.conf");
    System.setProperty("sun.security.krb5.debug", "true");

    Map<String, Object> state = new HashMap<String, Object>();
    state.put("javax.security.auth.login.name", "USERNAME");
    state.put("javax.security.auth.login.password", "PASSWORD".toCharArray());

    Map<String, Object> options = new HashMap<String, Object>();
    options.put("debug", "true");
    options.put("useFirstPass", "true");

    Krb5LoginModule login = new Krb5LoginModule();
    login.initialize(subject, null, state, options);

    if (login.login()) {
        login.commit();
    }

    String path = "file://HOST/242269/"; // existing file server folder
    Kerb5Authenticator kerberosAuthenticator = new Kerb5Authenticator(subject);

    SmbFile smbFile = new SmbFile(path, kerberosAuthenticator);
    SmbFile[] files = smbFile.listFiles();

    for (SmbFile file : files) {
        System.out.println(file);
    }
}

现在，当我运行此代码时，它说它可以使用这些凭据对用户进行身份验证(当我更改凭据时，身份验证失败)并为该用户创建一个票证。当我稍后尝试通过 CIFS 检索文件目录的内容时，出现以下错误:

GSSException: No valid credentials provided (Mechanism level: Message stream modified (41))
at sun.security.jgss.krb5.Krb5Context.initSecContext(Unknown Source)
at sun.security.jgss.GSSContextImpl.initSecContext(Unknown Source)
at sun.security.jgss.GSSContextImpl.initSecContext(Unknown Source)
at jcifs.smb.SpnegoContext.initSecContext(SpnegoContext.java:80)
at jcifs.smb.Kerb5Authenticator.setup(Kerb5Authenticator.java:196)
at jcifs.smb.Kerb5Authenticator.access$000(Kerb5Authenticator.java:30)
at jcifs.smb.Kerb5Authenticator$1.run(Kerb5Authenticator.java:168)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Unknown Source)
at jcifs.smb.Kerb5Authenticator.sessionSetup(Kerb5Authenticator.java:166)
at jcifs.smb.SmbSession.sessionSetup(SmbSession.java:320)
at jcifs.smb.SmbSession.send(SmbSession.java:239)
at jcifs.smb.SmbTree.treeConnect(SmbTree.java:176)
at jcifs.smb.SmbFile.doConnect(SmbFile.java:925)
at jcifs.smb.SmbFile.connect(SmbFile.java:974)
at jcifs.smb.SmbFile.connect0(SmbFile.java:890)
at jcifs.smb.SmbFile.resolveDfs(SmbFile.java:669)
at jcifs.smb.SmbFile.send(SmbFile.java:783)
at jcifs.smb.SmbFile.doFindFirstNext(SmbFile.java:2009)
at jcifs.smb.SmbFile.doEnum(SmbFile.java:1758)
at jcifs.smb.SmbFile.listFiles(SmbFile.java:1735)
at jcifs.smb.SmbFile.listFiles(SmbFile.java:1668)

您可以找到完整的错误日志 here (一些细节被混淆了)

关于我在这里做错了什么，有人可以让我朝着正确的方向前进吗？

Answer 1

大写 领域对于避免“Exception: krb_error 41 Message stream modified (41)”非常重要。

参见 http://sourceforge.net/p/spnego/discussion/1003769/thread/99b3ff67/