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Adding code for the tutorial tracked under BAEL-3073. (#7442)

This commit is contained in:
Kumar Chandrakant 2019-07-30 11:39:34 +05:30 committed by Grzegorz Piwowarek
parent 627fb4f1d1
commit 36ad6f15ef
3 changed files with 139 additions and 0 deletions
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29
core-java-modules/core-java-security/src/main/java/com/baeldung/sasl/ClientCallbackHandler.java Normal file
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package com.baeldung.sasl;
import java.io.IOException;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.sasl.RealmCallback;
public class ClientCallbackHandler implements CallbackHandler {
@Override
public void handle(Callback[] cbs) throws IOException, UnsupportedCallbackException {
for (Callback cb : cbs) {
if (cb instanceof NameCallback) {
NameCallback nc = (NameCallback) cb;
nc.setName("username");
} else if (cb instanceof PasswordCallback) {
PasswordCallback pc = (PasswordCallback) cb;
pc.setPassword("password".toCharArray());
} else if (cb instanceof RealmCallback) {
RealmCallback rc = (RealmCallback) cb;
rc.setText("myServer");
}
}
}
}

34
core-java-modules/core-java-security/src/main/java/com/baeldung/sasl/ServerCallbackHandler.java Normal file
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package com.baeldung.sasl;
import java.io.IOException;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.sasl.AuthorizeCallback;
import javax.security.sasl.RealmCallback;
public class ServerCallbackHandler implements CallbackHandler {
@Override
public void handle(Callback[] cbs) throws IOException, UnsupportedCallbackException {
for (Callback cb : cbs) {
if (cb instanceof AuthorizeCallback) {
AuthorizeCallback ac = (AuthorizeCallback) cb;
ac.setAuthorized(true);
} else if (cb instanceof NameCallback) {
NameCallback nc = (NameCallback) cb;
nc.setName("username");
} else if (cb instanceof PasswordCallback) {
PasswordCallback pc = (PasswordCallback) cb;
pc.setPassword("password".toCharArray());
} else if (cb instanceof RealmCallback) {
RealmCallback rc = (RealmCallback) cb;
rc.setText("myServer");
}
}
}
}

76
core-java-modules/core-java-security/src/test/java/com/baeldung/sasl/SaslUnitTest.java Normal file
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package com.baeldung.sasl;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
import javax.security.sasl.Sasl;
import javax.security.sasl.SaslClient;
import javax.security.sasl.SaslException;
import javax.security.sasl.SaslServer;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class SaslUnitTest {
private static final String MECHANISM = "DIGEST-MD5";
private static final String SERVER_NAME = "myServer";
private static final String PROTOCOL = "myProtocol";
private static final String AUTHORIZATION_ID = null;
private static final String QOP_LEVEL = "auth-conf";
private SaslServer saslServer;
private SaslClient saslClient;
@Before
public void setUp() throws SaslException {
ServerCallbackHandler serverHandler = new ServerCallbackHandler();
ClientCallbackHandler clientHandler = new ClientCallbackHandler();
Map<String, String> props = new HashMap<>();
props.put(Sasl.QOP, QOP_LEVEL);
saslServer = Sasl.createSaslServer(MECHANISM, PROTOCOL, SERVER_NAME, props, serverHandler);
saslClient = Sasl.createSaslClient(new String[] { MECHANISM }, AUTHORIZATION_ID, PROTOCOL, SERVER_NAME, props, clientHandler);
}
@Test
public void givenHandlers_whenStarted_thenAutenticationWorks() throws SaslException {
byte[] challenge;
byte[] response;
challenge = saslServer.evaluateResponse(new byte[0]);
response = saslClient.evaluateChallenge(challenge);
challenge = saslServer.evaluateResponse(response);
response = saslClient.evaluateChallenge(challenge);
assertTrue(saslServer.isComplete());
assertTrue(saslClient.isComplete());
String qop = (String) saslClient.getNegotiatedProperty(Sasl.QOP);
assertEquals("auth-conf", qop);
byte[] outgoing = "Baeldung".getBytes();
byte[] secureOutgoing = saslClient.wrap(outgoing, 0, outgoing.length);
byte[] secureIncoming = secureOutgoing;
byte[] incoming = saslServer.unwrap(secureIncoming, 0, secureIncoming.length);
assertEquals("Baeldung", new String(incoming, StandardCharsets.UTF_8));
}
@After
public void tearDown() throws SaslException {
saslClient.dispose();
saslServer.dispose();
}
}