org.dhatim.dropwizard.jwt.cookie.authentication.JwtCookieAuthBundle Maven / Gradle / Ivy
/**
* Copyright 2016 Dhatim
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.dhatim.dropwizard.jwt.cookie.authentication;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.google.common.hash.Hashing;
import com.google.common.primitives.Ints;
import io.dropwizard.Configuration;
import io.dropwizard.ConfiguredBundle;
import io.dropwizard.auth.AuthDynamicFeature;
import io.dropwizard.auth.AuthFilter;
import io.dropwizard.auth.AuthValueFactoryProvider;
import io.dropwizard.auth.Authorizer;
import io.dropwizard.jersey.setup.JerseyEnvironment;
import io.dropwizard.setup.Bootstrap;
import io.dropwizard.setup.Environment;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.SignatureAlgorithm;
import io.jsonwebtoken.impl.DefaultClaims;
import java.nio.charset.StandardCharsets;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import java.time.Duration;
import java.util.Optional;
import java.util.function.BiFunction;
import java.util.function.Function;
import javax.crypto.KeyGenerator;
import javax.crypto.spec.SecretKeySpec;
import javax.ws.rs.container.ContainerResponseFilter;
import org.glassfish.jersey.server.filter.RolesAllowedDynamicFeature;
/**
* Dopwizard bundle
* @param Your application configuration class
* @param the class of the principal that will be serialized in / deserialized from JWT cookies
*/
public class JwtCookieAuthBundle implements ConfiguredBundle{
private static final String JWT_COOKIE_PREFIX = "jwtCookie";
private static final String DEFAULT_COOKIE_NAME = "sessionToken";
private final Class principalType;
private final Function serializer;
private final Function deserializer;
private Function configurationSupplier;
private BiFunction keySuppplier;
/**
* Get a bundle instance that will use DefaultJwtCookiePrincipal
* @param Your application configuration class
* @return a bundle instance that will use DefaultJwtCookiePrincipal
*/
public static JwtCookieAuthBundle getDefault(){
return new JwtCookieAuthBundle<>(
DefaultJwtCookiePrincipal.class,
DefaultJwtCookiePrincipal::getClaims,
DefaultJwtCookiePrincipal::new);
}
/**
* Build a new instance of JwtCookieAuthBundle
* @param principalType the class of the principal that will be serialized in / deserialized from JWT cookies
* @param serializer a function to serialize principals into JWT claims
* @param deserializer a function to deserialize JWT claims into principals
*/
public JwtCookieAuthBundle(Class principalType, Function serializer, Function deserializer) {
this.principalType = principalType;
this.serializer = serializer;
this.deserializer = deserializer;
this.configurationSupplier = c -> new JwtCookieAuthConfiguration();
}
/**
* If you want to sign the JWT with your own key, specify it here
* @param keySupplier a bi-function which will return the signing key from the configuration and environment
* @return this
*/
public JwtCookieAuthBundle withKeyProvider(BiFunction keySupplier){
this.keySuppplier = keySupplier;
return this;
}
/**
* If you need to configure the bundle, specify it here
* @param configurationSupplier a bi-function which will return the bundle configuration from the application configuration
* @return this
*/
public JwtCookieAuthBundle withConfigurationSupplier(Function configurationSupplier) {
this.configurationSupplier = configurationSupplier;
return this;
}
@Override
public void initialize(Bootstrap bootstrap) {
//in case somebody needs to serialize a DefaultJwtCookiePrincipal
bootstrap.getObjectMapper().registerModule(new SimpleModule().addAbstractTypeMapping(Claims.class, DefaultClaims.class));
}
@Override
public void run(C configuration, Environment environment) throws Exception {
JwtCookieAuthConfiguration conf = configurationSupplier.apply(configuration);
//build the key from the key factory if it was provided
Key key = Optional
.ofNullable(keySuppplier)
.map(k -> k.apply(configuration, environment))
.orElseGet(() -> generateKey(conf.getSecretSeed()));
JerseyEnvironment jerseyEnvironment = environment.jersey();
jerseyEnvironment.register(new AuthDynamicFeature(getAuthRequestFilter(key)));
jerseyEnvironment.register(new AuthValueFactoryProvider.Binder<>(principalType));
jerseyEnvironment.register(RolesAllowedDynamicFeature.class);
jerseyEnvironment.register(getAuthResponseFilter(key, conf));
jerseyEnvironment.register(DontRefreshSessionFilter.class);
}
/**
* Get a filter that will desezialize the principal from JWT cookies found in HTTP requests
* @param key the key used to validate the JWT
* @return the request filter
*/
public AuthFilter getAuthRequestFilter(Key key){
return new JwtCookieAuthRequestFilter.Builder()
.setCookieName(DEFAULT_COOKIE_NAME)
.setAuthenticator(new JwtCookiePrincipalAuthenticator(key, deserializer))
.setPrefix(JWT_COOKIE_PREFIX)
.setAuthorizer((Authorizer)(P::isInRole))
.buildAuthFilter();
}
/**
* Get a filter that will serialize principals into JWTs and add them to HTTP response cookies
* @param key the key used to sign the JWT
* @param configuration cookie configuration (secure, httpOnly, expiration...)
* @return the response filter
*/
public ContainerResponseFilter getAuthResponseFilter(Key key, JwtCookieAuthConfiguration configuration) {
return new JwtCookieAuthResponseFilter<>(
principalType,
serializer,
DEFAULT_COOKIE_NAME,
configuration.isSecure(),
configuration.isHttpOnly(),
key,
Ints.checkedCast(Duration.parse(configuration.getSessionExpiryVolatile()).getSeconds()),
Ints.checkedCast(Duration.parse(configuration.getSessionExpiryPersistent()).getSeconds()));
}
/**
* Generate a HMAC SHA256 Key that can be used to sign JWTs
* @param secretSeed a seed from which the key will be generated.
* Identical seeds will generate identical keys.
* If null, a random key is returned.
* @return a HMAC SHA256 Key
*/
public static Key generateKey(String secretSeed) {
// make a key from the seed if it was provided
return Optional.ofNullable(secretSeed)
.map(seed -> Hashing.sha256().newHasher().putString(seed, StandardCharsets.UTF_8).hash().asBytes())
.map(k -> (Key) new SecretKeySpec(k, SignatureAlgorithm.HS256.getJcaName()))
//else generate a random key
.orElseGet(getHmacSha256KeyGenerator()::generateKey);
}
private static KeyGenerator getHmacSha256KeyGenerator(){
try{
return KeyGenerator.getInstance(SignatureAlgorithm.HS256.getJcaName());
} catch(NoSuchAlgorithmException e){
throw new SecurityException(e);
}
}
}