How to use

JaasKrbUtil

in

org.apache.kerby.kerberos.kerb.client

private CloseableHttpClient createHttpClient() throws Exception {
 final Subject clientSubject = JaasKrbUtil.loginUsingKeytab(clientPrincipal, clientKeytab);
 final Set<Principal> clientPrincipals = clientSubject.getPrincipals();

public static Subject loginUsingKeytab(
    String principal, File keytabFile) throws LoginException {
  Set<Principal> principals = new HashSet<>();
  principals.add(new KerberosPrincipal(principal));
  Subject subject = new Subject(false, principals,
      new HashSet<Object>(), new HashSet<Object>());
  Configuration conf = useKeytab(principal, keytabFile);
  String confName = "KeytabConf";
  LoginContext loginContext = new LoginContext(confName, subject, null, conf);
  loginContext.login();
  return loginContext.getSubject();
}

public static Subject loginUsingTicketCache(
    String principal, File cacheFile) throws LoginException {
  Set<Principal> principals = new HashSet<>();
  principals.add(new KerberosPrincipal(principal));
  Subject subject = new Subject(false, principals,
      new HashSet<Object>(), new HashSet<Object>());
  Configuration conf = useTicketCache(principal, cacheFile);
  String confName = "TicketCacheConf";
  LoginContext loginContext = new LoginContext(confName, subject, null, conf);
  loginContext.login();
  return loginContext.getSubject();
}

public static Subject loginUsingPassword(
    String principal, String password) throws LoginException {
  Set<Principal> principals = new HashSet<>();
  principals.add(new KerberosPrincipal(principal));
  Subject subject = new Subject(false, principals,
      new HashSet<Object>(), new HashSet<Object>());
  Configuration conf = usePassword(principal);
  String confName = "PasswordConf";
  CallbackHandler callback = new KrbCallbackHandler(principal, password);
  LoginContext loginContext = new LoginContext(confName, subject, callback, conf);
  loginContext.login();
  return loginContext.getSubject();
}

protected Subject loginClientUsingPassword() throws LoginException {
  return JaasKrbUtil.loginUsingPassword(getClientPrincipal(),
    getClientPassword());
}

protected Subject loginClientUsingTicketCache() throws Exception {
  TgtTicket tgt = getKrbClient().requestTgt(getClientPrincipal(),
    getClientPassword());
  getKrbClient().storeTicket(tgt, ticketCacheFile);
  return JaasKrbUtil.loginUsingTicketCache(getClientPrincipal(),
    ticketCacheFile);
}

public static Subject loginUsingKeytab(
    String principal, File keytabFile) throws LoginException {
  Set<Principal> principals = new HashSet<>();
  principals.add(new KerberosPrincipal(principal));
  Subject subject = new Subject(false, principals,
      new HashSet<Object>(), new HashSet<Object>());
  Configuration conf = useKeytab(principal, keytabFile);
  String confName = "KeytabConf";
  LoginContext loginContext = new LoginContext(confName, subject, null, conf);
  loginContext.login();
  return loginContext.getSubject();
}

public static Subject loginUsingTicketCache(
    String principal, File cacheFile) throws LoginException {
  Set<Principal> principals = new HashSet<>();
  principals.add(new KerberosPrincipal(principal));
  Subject subject = new Subject(false, principals,
      new HashSet<Object>(), new HashSet<Object>());
  Configuration conf = useTicketCache(principal, cacheFile);
  String confName = "TicketCacheConf";
  LoginContext loginContext = new LoginContext(confName, subject, null, conf);
  loginContext.login();
  return loginContext.getSubject();
}

public static Subject loginUsingPassword(
    String principal, String password) throws LoginException {
  Set<Principal> principals = new HashSet<>();
  principals.add(new KerberosPrincipal(principal));
  Subject subject = new Subject(false, principals,
      new HashSet<Object>(), new HashSet<Object>());
  Configuration conf = usePassword(principal);
  String confName = "PasswordConf";
  CallbackHandler callback = new KrbCallbackHandler(principal, password);
  LoginContext loginContext = new LoginContext(confName, subject, callback, conf);
  loginContext.login();
  return loginContext.getSubject();
}

@Test
public void testAllowedClient() throws Exception {
 final Subject clientSubject = JaasKrbUtil.loginUsingKeytab(CLIENT_PRINCIPAL, clientKeytab);
 final Set<Principal> clientPrincipals = clientSubject.getPrincipals();

  @Override
  public void run() {
    Subject subject = null;
    try {
      subject = JaasKrbUtil.loginUsingKeytab(principalList.get(index),
        keytabList.get(index));
    } catch (LoginException e) {
      System.err.println("Failed to login using keytab. " + e);
    }
    if (subject != null) {
      System.out.println("Login succeeded for user: "
        + subject.getPrincipals().iterator().next());
    }
  }
}

  @Override
  public void run() {
    Subject subject = null;
    try {
      subject = JaasKrbUtil.loginUsingKeytab(principalList.get(index),
        keytabList.get(index));
    } catch (LoginException e) {
      System.err.println("Failed to login using keytab. " + e);
    }
    if (subject != null) {
      System.out.println("Login succeeded for user: "
        + subject.getPrincipals().iterator().next());
    }
  }
}

private CloseableHttpClient createHttpClient() throws Exception {
 final Subject clientSubject = JaasKrbUtil.loginUsingKeytab(clientPrincipal, clientKeytab);
 final Set<Principal> clientPrincipals = clientSubject.getPrincipals();

protected Subject loginServiceUsingKeytab() throws Exception {
  getKdcServer().exportPrincipal(getServerPrincipal(), serviceKeytabFile);
  return JaasKrbUtil.loginUsingKeytab(getServerPrincipal(),
    serviceKeytabFile);
}