Java Code Examples for com.sun.security.auth.module.Krb5LoginModule#login()

/**
 * Logins with username/keytab as a new subject,
 */
public static Context fromUserKtab(Subject s,
        String user, String ktab, boolean storeKey) throws Exception {
    Context out = new Context();
    out.name = user;
    out.s = s;
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Map<String, String> map = new HashMap<>();

    map.put("isInitiator", "false");
    map.put("doNotPrompt", "true");
    map.put("useTicketCache", "false");
    map.put("useKeyTab", "true");
    map.put("keyTab", ktab);
    map.put("principal", user);
    if (storeKey) {
        map.put("storeKey", "true");
    }

    krb5.initialize(out.s, null, null, map);
    krb5.login();
    krb5.commit();
    return out;
}
 

/**
 * Logins with username/keytab as a new subject,
 */
public static Context fromUserKtab(Subject s,
        String user, String ktab, boolean storeKey) throws Exception {
    Context out = new Context();
    out.name = user;
    out.s = s;
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Map<String, String> map = new HashMap<>();

    map.put("isInitiator", "false");
    map.put("doNotPrompt", "true");
    map.put("useTicketCache", "false");
    map.put("useKeyTab", "true");
    map.put("keyTab", ktab);
    map.put("principal", user);
    if (storeKey) {
        map.put("storeKey", "true");
    }

    krb5.initialize(out.s, null, null, map);
    krb5.login();
    krb5.commit();
    return out;
}
 

/**
 * Logins with username/keytab as a new subject,
 */
public static Context fromUserKtab(Subject s,
        String user, String ktab, boolean storeKey) throws Exception {
    Context out = new Context();
    out.name = user;
    out.s = s;
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Map<String, String> map = new HashMap<>();

    map.put("isInitiator", "false");
    map.put("doNotPrompt", "true");
    map.put("useTicketCache", "false");
    map.put("useKeyTab", "true");
    map.put("keyTab", ktab);
    map.put("principal", user);
    if (storeKey) {
        map.put("storeKey", "true");
    }

    krb5.initialize(out.s, null, null, map);
    krb5.login();
    krb5.commit();
    return out;
}
 

/**
 * Logins with username/keytab as a new subject,
 */
public static Context fromUserKtab(Subject s,
        String user, String ktab, boolean storeKey) throws Exception {
    Context out = new Context();
    out.name = user;
    out.s = s;
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Map<String, String> map = new HashMap<>();

    map.put("isInitiator", "false");
    map.put("doNotPrompt", "true");
    map.put("useTicketCache", "false");
    map.put("useKeyTab", "true");
    map.put("keyTab", ktab);
    map.put("principal", user);
    if (storeKey) {
        map.put("storeKey", "true");
    }

    krb5.initialize(out.s, null, null, map);
    krb5.login();
    krb5.commit();
    return out;
}
 

static void login(CallbackHandler callback, Object... options)
        throws Exception {
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Subject subject = new Subject();
    Map<String, String> map = new HashMap<>();
    Map<String, Object> shared = new HashMap<>();

    int count = options.length / 2;
    for (int i = 0; i < count; i++) {
        String key = (String) options[2 * i];
        Object value = options[2 * i + 1];
        if (key.startsWith("javax")) {
            shared.put(key, value);
        } else {
            map.put(key, (String) value);
        }
    }
    krb5.initialize(subject, callback, shared, map);
    krb5.login();
    krb5.commit();
    if (!subject.getPrincipals().iterator().next()
            .getName().startsWith(OneKDC.USER)) {
        throw new Exception("The authenticated is not " + OneKDC.USER);
    }
}
 

/**
 * Logins with username/keytab as a new subject,
 */
public static Context fromUserKtab(Subject s,
        String user, String ktab, boolean storeKey) throws Exception {
    Context out = new Context();
    out.name = user;
    out.s = s;
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Map<String, String> map = new HashMap<>();

    map.put("isInitiator", "false");
    map.put("doNotPrompt", "true");
    map.put("useTicketCache", "false");
    map.put("useKeyTab", "true");
    map.put("keyTab", ktab);
    map.put("principal", user);
    if (storeKey) {
        map.put("storeKey", "true");
    }

    krb5.initialize(out.s, null, null, map);
    krb5.login();
    krb5.commit();
    return out;
}
 

static void login(CallbackHandler callback, Object... options)
        throws Exception {
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Subject subject = new Subject();
    Map<String, String> map = new HashMap<>();
    Map<String, Object> shared = new HashMap<>();

    int count = options.length / 2;
    for (int i = 0; i < count; i++) {
        String key = (String) options[2 * i];
        Object value = options[2 * i + 1];
        if (key.startsWith("javax")) {
            shared.put(key, value);
        } else {
            map.put(key, (String) value);
        }
    }
    krb5.initialize(subject, callback, shared, map);
    krb5.login();
    krb5.commit();
    if (!subject.getPrincipals().iterator().next()
            .getName().startsWith(OneKDC.USER)) {
        throw new Exception("The authenticated is not " + OneKDC.USER);
    }
}
 

static void login(CallbackHandler callback, Object... options)
        throws Exception {
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Subject subject = new Subject();
    Map<String, String> map = new HashMap<>();
    Map<String, Object> shared = new HashMap<>();

    int count = options.length / 2;
    for (int i = 0; i < count; i++) {
        String key = (String) options[2 * i];
        Object value = options[2 * i + 1];
        if (key.startsWith("javax")) {
            shared.put(key, value);
        } else {
            map.put(key, (String) value);
        }
    }
    krb5.initialize(subject, callback, shared, map);
    krb5.login();
    krb5.commit();
    if (!subject.getPrincipals().iterator().next()
            .getName().startsWith(OneKDC.USER)) {
        throw new Exception("The authenticated is not " + OneKDC.USER);
    }
}
 

/**
 * Logins with username/keytab as a new subject,
 */
public static Context fromUserKtab(Subject s,
        String user, String ktab, boolean storeKey) throws Exception {
    Context out = new Context();
    out.name = user;
    out.s = s;
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Map<String, String> map = new HashMap<>();

    map.put("isInitiator", "false");
    map.put("doNotPrompt", "true");
    map.put("useTicketCache", "false");
    map.put("useKeyTab", "true");
    map.put("keyTab", ktab);
    map.put("principal", user);
    if (storeKey) {
        map.put("storeKey", "true");
    }

    krb5.initialize(out.s, null, null, map);
    krb5.login();
    krb5.commit();
    return out;
}
 

/**
 * Log in the given principal and return the subject.
 */
public Subject login(String principal) {
    Path keytab = getKeytabPath(principal);

    // Set login options
    final Map<String, String> options = new HashMap<>();
    options.put("keyTab", keytab.toString());
    options.put("principal", principal);
    options.put("doNotPrompt", "true");
    options.put("isInitiator", "true");
    options.put("refreshKrb5Config", "true");
    options.put("storeKey", "true");
    options.put("useKeyTab", "true");

    // Execute the login
    Subject subject = new Subject();
    Krb5LoginModule krb5LoginModule = new Krb5LoginModule();
    krb5LoginModule.initialize(subject, null, new HashMap<String, String>(), options);
    try {
        krb5LoginModule.login();
        krb5LoginModule.commit();
    } catch (LoginException e) {
        throw new RuntimeException(e);
    }
    return subject;
}
 

@Test
public void testKerberosAuth() throws Throwable {
  File krb5conf = getKdc().getKrb5conf();
  String krbConfig = FileUtils.readFileToString(krb5conf);
  LOG.info("krb5.conf at {}:\n{}", krb5conf, krbConfig);
  Subject subject = new Subject();

  final Krb5LoginModule krb5LoginModule = new Krb5LoginModule();
  final Map<String, String> options = new HashMap<String, String>();
  options.put("keyTab", keytab_alice.getAbsolutePath());
  options.put("principal", ALICE_LOCALHOST);
  options.put("debug", "true");
  options.put("doNotPrompt", "true");
  options.put("isInitiator", "true");
  options.put("refreshKrb5Config", "true");
  options.put("renewTGT", "true");
  options.put("storeKey", "true");
  options.put("useKeyTab", "true");
  options.put("useTicketCache", "true");

  krb5LoginModule.initialize(subject, null,
      new HashMap<String, String>(),
      options);

  boolean loginOk = krb5LoginModule.login();
  assertTrue("Failed to login", loginOk);
  boolean commitOk = krb5LoginModule.commit();
  assertTrue("Failed to Commit", commitOk);
}
 

void go() throws Exception {
    Krb5LoginModule krb5 = new Krb5LoginModule();

    final String name = OneKDC.USER;
    final char[] password = OneKDC.PASS;
    char[] badpassword = "hellokitty".toCharArray();

    Map<String,String> map = new HashMap<>();
    map.put("useTicketCache", "false");
    map.put("doNotPrompt", "false");
    map.put("tryFirstPass", "true");
    Map<String,Object> shared = new HashMap<>();
    shared.put("javax.security.auth.login.name", name);
    shared.put("javax.security.auth.login.password", badpassword);

    krb5.initialize(new Subject(), new CallbackHandler() {
        @Override
        public void handle(Callback[] callbacks) {
            for(Callback callback: callbacks) {
                if (callback instanceof NameCallback) {
                    ((NameCallback)callback).setName(name);
                }
                if (callback instanceof PasswordCallback) {
                    ((PasswordCallback)callback).setPassword(password);
                }
            }
        }
    }, shared, map);
    krb5.login();
}
 

void go() throws Exception {
    Krb5LoginModule krb5 = new Krb5LoginModule();

    final String name = OneKDC.USER;
    final char[] password = OneKDC.PASS;
    char[] badpassword = "hellokitty".toCharArray();

    Map<String,String> map = new HashMap<>();
    map.put("useTicketCache", "false");
    map.put("doNotPrompt", "false");
    map.put("tryFirstPass", "true");
    Map<String,Object> shared = new HashMap<>();
    shared.put("javax.security.auth.login.name", name);
    shared.put("javax.security.auth.login.password", badpassword);

    krb5.initialize(new Subject(), new CallbackHandler() {
        @Override
        public void handle(Callback[] callbacks) {
            for(Callback callback: callbacks) {
                if (callback instanceof NameCallback) {
                    ((NameCallback)callback).setName(name);
                }
                if (callback instanceof PasswordCallback) {
                    ((PasswordCallback)callback).setPassword(password);
                }
            }
        }
    }, shared, map);
    krb5.login();
}
 

public MyServerAuthenticator(boolean proxy, String scheme,
        String principal, String ktab) throws Exception {

    this.scheme = scheme;
    if (proxy) {
        reqHdr = "Proxy-Authenticate";
        respHdr = "Proxy-Authorization";
        err = HttpURLConnection.HTTP_PROXY_AUTH;
    }

    Krb5LoginModule krb5 = new Krb5LoginModule();
    Map<String, String> map = new HashMap<>();
    Map<String, Object> shared = new HashMap<>();

    map.put("storeKey", "true");
    map.put("isInitiator", "false");
    map.put("useKeyTab", "true");
    map.put("keyTab", ktab);
    map.put("principal", principal);
    krb5.initialize(s, null, shared, map);
    krb5.login();
    krb5.commit();
    m = GSSManager.getInstance();
    cred = Subject.doAs(s, new PrivilegedExceptionAction<GSSCredential>() {
        @Override
        public GSSCredential run() throws Exception {
            System.err.println("Creating GSSCredential");
            return m.createCredential(
                    null,
                    GSSCredential.INDEFINITE_LIFETIME,
                    MyServerAuthenticator.this.scheme.equalsIgnoreCase("Negotiate")?
                            GSSUtil.GSS_SPNEGO_MECH_OID:
                            GSSUtil.GSS_KRB5_MECH_OID,
                    GSSCredential.ACCEPT_ONLY);
        }
    });
}
 

public MyServerAuthenticator(boolean proxy, String scheme,
        String principal, String ktab) throws Exception {

    this.scheme = scheme;
    if (proxy) {
        reqHdr = "Proxy-Authenticate";
        respHdr = "Proxy-Authorization";
        err = HttpURLConnection.HTTP_PROXY_AUTH;
    }

    Krb5LoginModule krb5 = new Krb5LoginModule();
    Map<String, String> map = new HashMap<>();
    Map<String, Object> shared = new HashMap<>();

    map.put("storeKey", "true");
    map.put("isInitiator", "false");
    map.put("useKeyTab", "true");
    map.put("keyTab", ktab);
    map.put("principal", principal);
    krb5.initialize(s, null, shared, map);
    krb5.login();
    krb5.commit();
    m = GSSManager.getInstance();
    cred = Subject.doAs(s, new PrivilegedExceptionAction<GSSCredential>() {
        @Override
        public GSSCredential run() throws Exception {
            System.err.println("Creating GSSCredential");
            return m.createCredential(
                    null,
                    GSSCredential.INDEFINITE_LIFETIME,
                    MyServerAuthenticator.this.scheme.equalsIgnoreCase("Negotiate")?
                            GSSUtil.GSS_SPNEGO_MECH_OID:
                            GSSUtil.GSS_KRB5_MECH_OID,
                    GSSCredential.ACCEPT_ONLY);
        }
    });
}
 

void go() throws Exception {
    Krb5LoginModule krb5 = new Krb5LoginModule();

    final String name = OneKDC.USER;
    final char[] password = OneKDC.PASS;
    char[] badpassword = "hellokitty".toCharArray();

    Map<String,String> map = new HashMap<>();
    map.put("useTicketCache", "false");
    map.put("doNotPrompt", "false");
    map.put("tryFirstPass", "true");
    Map<String,Object> shared = new HashMap<>();
    shared.put("javax.security.auth.login.name", name);
    shared.put("javax.security.auth.login.password", badpassword);

    krb5.initialize(new Subject(), new CallbackHandler() {
        @Override
        public void handle(Callback[] callbacks) {
            for(Callback callback: callbacks) {
                if (callback instanceof NameCallback) {
                    ((NameCallback)callback).setName(name);
                }
                if (callback instanceof PasswordCallback) {
                    ((PasswordCallback)callback).setPassword(password);
                }
            }
        }
    }, shared, map);
    krb5.login();
}
 

void go() throws Exception {
    Krb5LoginModule krb5 = new Krb5LoginModule();

    final String name = OneKDC.USER;
    final char[] password = OneKDC.PASS;
    char[] badpassword = "hellokitty".toCharArray();

    Map<String,String> map = new HashMap<>();
    map.put("useTicketCache", "false");
    map.put("doNotPrompt", "false");
    map.put("tryFirstPass", "true");
    Map<String,Object> shared = new HashMap<>();
    shared.put("javax.security.auth.login.name", name);
    shared.put("javax.security.auth.login.password", badpassword);

    krb5.initialize(new Subject(), new CallbackHandler() {
        @Override
        public void handle(Callback[] callbacks) {
            for(Callback callback: callbacks) {
                if (callback instanceof NameCallback) {
                    ((NameCallback)callback).setName(name);
                }
                if (callback instanceof PasswordCallback) {
                    ((PasswordCallback)callback).setPassword(password);
                }
            }
        }
    }, shared, map);
    krb5.login();
}
 

public static void main(String[] args) throws Exception {

        String[][] kdcs = {
                {"simple.host", null},  // These are legal settings
                {"simple.host", ""},
                {"simple.host", "8080"},
                {"0.0.0.1", null},
                {"0.0.0.1", ""},
                {"0.0.0.1", "8080"},
                {"1::1", null},
                {"[1::1]", null},
                {"[1::1]", ""},
                {"[1::1]", "8080"},
                {"[1::1", null},        // Two illegal settings
                {"[1::1]abc", null},
        };
        // Prepares a krb5.conf with every kind of KDC settings
        PrintStream out = new PrintStream(new FileOutputStream("ipv6.conf"));
        out.println("[libdefaults]");
        out.println("default_realm = V6");
        out.println("kdc_timeout = 1");
        out.println("[realms]");
        out.println("V6 = {");
        for (String[] hp: kdcs) {
            if (hp[1] != null) out.println("    kdc = "+hp[0]+":"+hp[1]);
            else out.println("    kdc = " + hp[0]);
        }
        out.println("}");
        out.close();

        System.setProperty("sun.security.krb5.debug", "true");
        System.setProperty("java.security.krb5.conf", "ipv6.conf");

        ByteArrayOutputStream bo = new ByteArrayOutputStream();
        PrintStream po = new PrintStream(bo);
        PrintStream oldout = System.out;
        System.setOut(po);

        try {
            Subject subject = new Subject();
            Krb5LoginModule krb5 = new Krb5LoginModule();
            Map<String, String> map = new HashMap<>();
            Map<String, Object> shared = new HashMap<>();

            map.put("debug", "true");
            map.put("doNotPrompt", "true");
            map.put("useTicketCache", "false");
            map.put("useFirstPass", "true");
            shared.put("javax.security.auth.login.name", "any");
            shared.put("javax.security.auth.login.password", "any".toCharArray());
            krb5.initialize(subject, null, shared, map);
            krb5.login();
        } catch (Exception e) {
            // Ignore
        }

        po.flush();

        System.setOut(oldout);
        BufferedReader br = new BufferedReader(new StringReader(
                new String(bo.toByteArray())));
        int cc = 0;
        Pattern r = Pattern.compile(".*KrbKdcReq send: kdc=(.*) UDP:(\\d+),.*");
        String line;
        while ((line = br.readLine()) != null) {
            Matcher m = r.matcher(line.subSequence(0, line.length()));
            if (m.matches()) {
                System.out.println("------------------");
                System.out.println(line);
                String h = m.group(1), p = m.group(2);
                String eh = kdcs[cc][0], ep = kdcs[cc][1];
                if (eh.charAt(0) == '[') {
                    eh = eh.substring(1, eh.length()-1);
                }
                System.out.println("Expected: " + eh + " : " + ep);
                System.out.println("Actual: " + h + " : " + p);
                if (!eh.equals(h) ||
                        (ep == null || ep.length() == 0) && !p.equals("88") ||
                        (ep != null && ep.length() > 0) && !p.equals(ep)) {
                    throw new Exception("Mismatch");
                }
                cc++;
            }
        }
        if (cc != kdcs.length - 2) {    // 2 illegal settings at the end
            throw new Exception("Not traversed");
        }
    }
 

public static void main(String[] args) throws Exception {

        String[][] kdcs = {
                {"simple.host", null},  // These are legal settings
                {"simple.host", ""},
                {"simple.host", "8080"},
                {"0.0.0.1", null},
                {"0.0.0.1", ""},
                {"0.0.0.1", "8080"},
                {"1::1", null},
                {"[1::1]", null},
                {"[1::1]", ""},
                {"[1::1]", "8080"},
                {"[1::1", null},        // Two illegal settings
                {"[1::1]abc", null},
        };
        // Prepares a krb5.conf with every kind of KDC settings
        PrintStream out = new PrintStream(new FileOutputStream("ipv6.conf"));
        out.println("[libdefaults]");
        out.println("default_realm = V6");
        out.println("kdc_timeout = 1");
        out.println("[realms]");
        out.println("V6 = {");
        for (String[] hp: kdcs) {
            if (hp[1] != null) out.println("    kdc = "+hp[0]+":"+hp[1]);
            else out.println("    kdc = " + hp[0]);
        }
        out.println("}");
        out.close();

        System.setProperty("sun.security.krb5.debug", "true");
        System.setProperty("java.security.krb5.conf", "ipv6.conf");

        ByteArrayOutputStream bo = new ByteArrayOutputStream();
        PrintStream po = new PrintStream(bo);
        PrintStream oldout = System.out;
        System.setOut(po);

        try {
            Subject subject = new Subject();
            Krb5LoginModule krb5 = new Krb5LoginModule();
            Map<String, String> map = new HashMap<>();
            Map<String, Object> shared = new HashMap<>();

            map.put("debug", "true");
            map.put("doNotPrompt", "true");
            map.put("useTicketCache", "false");
            map.put("useFirstPass", "true");
            shared.put("javax.security.auth.login.name", "any");
            shared.put("javax.security.auth.login.password", "any".toCharArray());
            krb5.initialize(subject, null, shared, map);
            krb5.login();
        } catch (Exception e) {
            // Ignore
        }

        po.flush();

        System.setOut(oldout);
        BufferedReader br = new BufferedReader(new StringReader(
                new String(bo.toByteArray())));
        int cc = 0;
        Pattern r = Pattern.compile(".*KrbKdcReq send: kdc=(.*) UDP:(\\d+),.*");
        String line;
        while ((line = br.readLine()) != null) {
            Matcher m = r.matcher(line.subSequence(0, line.length()));
            if (m.matches()) {
                System.out.println("------------------");
                System.out.println(line);
                String h = m.group(1), p = m.group(2);
                String eh = kdcs[cc][0], ep = kdcs[cc][1];
                if (eh.charAt(0) == '[') {
                    eh = eh.substring(1, eh.length()-1);
                }
                System.out.println("Expected: " + eh + " : " + ep);
                System.out.println("Actual: " + h + " : " + p);
                if (!eh.equals(h) ||
                        (ep == null || ep.length() == 0) && !p.equals("88") ||
                        (ep != null && ep.length() > 0) && !p.equals(ep)) {
                    throw new Exception("Mismatch");
                }
                cc++;
            }
        }
        if (cc != kdcs.length - 2) {    // 2 illegal settings at the end
            throw new Exception("Not traversed");
        }
    }
 

/**
 * Logins with username/password as an existing Subject. The
 * same subject can be used multiple times to simulate multiple logins.
 * @param s existing subject
 */
public static Context fromUserPass(Subject s,
        String user, char[] pass, boolean storeKey) throws Exception {
    Context out = new Context();
    out.name = user;
    out.s = s;
    Krb5LoginModule krb5 = new Krb5LoginModule();
    Map<String, String> map = new HashMap<>();
    Map<String, Object> shared = new HashMap<>();

    if (storeKey) {
        map.put("storeKey", "true");
    }

    if (pass != null) {
        krb5.initialize(out.s, new CallbackHandler() {
            @Override
            public void handle(Callback[] callbacks)
                    throws IOException, UnsupportedCallbackException {
                for (Callback cb: callbacks) {
                    if (cb instanceof NameCallback) {
                        ((NameCallback)cb).setName(user);
                    } else if (cb instanceof PasswordCallback) {
                        ((PasswordCallback)cb).setPassword(pass);
                    }
                }
            }
        }, shared, map);
    } else {
        map.put("doNotPrompt", "true");
        map.put("useTicketCache", "true");
        if (user != null) {
            map.put("principal", user);
        }
        krb5.initialize(out.s, null, shared, map);
    }

    krb5.login();
    krb5.commit();

    return out;
}