Example usage for javax.security.auth.kerberos KerberosPrincipal KRB_NT_SRV_INST

Introduction

In this page you can find the example usage for javax.security.auth.kerberos KerberosPrincipal KRB_NT_SRV_INST.

Prototype

int KRB_NT_SRV_INST

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Document

service and other unique instance (krbtgt) name type.

Usage

From source file:org.adeptnet.auth.kerberos.Krb5.java

public String isTicketValid(String spn, byte[] ticket) {
    checkCreds();/*from w  w w  .j a va2  s .com*/
    LoginContext ctx = null;
    try {
        if (!config.getKeytab().exists()) {
            throw new LoginException(
                    String.format("KeyTab does not exist: %s", config.getKeytab().getAbsolutePath()));
        }
        final Principal principal = new KerberosPrincipal(spn, KerberosPrincipal.KRB_NT_SRV_INST);
        Set<Principal> principals = new HashSet<>();
        principals.add(principal);

        final Subject subject = new Subject(false, principals, new HashSet<>(), new HashSet<>());

        ctx = new LoginContext(config.getContextName(), subject, null, getJaasKrb5TicketCfg(spn));
        ctx.login();

        final Krb5TicketValidateAction validateAction = new Krb5TicketValidateAction(ticket, spn);
        final String username = Subject.doAs(subject, validateAction);
        return username;
    } catch (java.security.PrivilegedActionException | LoginException e) {
        LOG.fatal(spn, e);
    } finally {
        try {
            if (ctx != null) {
                ctx.logout();
            }
        } catch (LoginException e2) {
            LOG.fatal(spn, e2);
        }
    }

    return FAILED;
}

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