/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.jooby.internal.pac4j;
import javaslang.CheckedFunction1;
import org.jooby.*;
import org.jooby.pac4j.Auth;
import org.jooby.pac4j.AuthStore;
import org.pac4j.core.client.Client;
import org.pac4j.core.client.Clients;
import org.pac4j.core.client.DirectClient;
import org.pac4j.core.client.IndirectClient;
import org.pac4j.core.client.finder.ClientFinder;
import org.pac4j.core.context.Pac4jConstants;
import org.pac4j.core.context.WebContext;
import org.pac4j.core.credentials.Credentials;
import org.pac4j.core.exception.HttpAction;
import org.pac4j.core.exception.TechnicalException;
import org.pac4j.core.profile.CommonProfile;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
import java.util.function.Predicate;
import static java.util.Objects.*;
public class AuthFilter implements Route.Handler {
@SuppressWarnings("rawtypes")
private static final Predicate<Client> useSession = c -> c instanceof IndirectClient;
/**
* The logging system.
*/
private final Logger log = LoggerFactory.getLogger(getClass());
private String clientName;
private Class<? extends CommonProfile> profileType;
public AuthFilter(final Class<? extends Client<?, ?>> clientType,
final Class<? extends CommonProfile> profileType) {
this.clientName = clientType.getSimpleName();
this.profileType = requireNonNull(profileType, "ProfileType is required.");
}
public AuthFilter setName(final String clientName) {
this.clientName += Pac4jConstants.ELEMENT_SEPRATOR + clientName;
return this;
}
public String getName() {
return clientName;
}
@SuppressWarnings({"unchecked"})
@Override
public void handle(final Request req, final Response rsp) throws Throwable {
Clients clients = req.require(Clients.class);
String clientName = req.param(clients.getClientNameParameter()).value(this.clientName);
WebContext ctx = req.require(WebContext.class);
ClientFinder finder = req.require(ClientFinder.class);
AuthStore<CommonProfile> store = req.require(AuthStore.class);
// stateless or previously authenticated stateful
CommonProfile profile = find(finder, clients, ctx, null, clientName, client -> {
String profileId = profileID(useSession.test(client), req);
CommonProfile identity = profileId == null ? null : store.get(profileId).orElse(null);
if (identity == null) {
if (client instanceof DirectClient) {
log.debug("Performing authentication for client: {}", client);
try {
Credentials credentials = client.getCredentials(ctx);
log.debug("credentials: {}", credentials);
identity = client.getUserProfile(credentials, ctx);
log.debug("profile: {}", identity);
if (identity != null) {
req.set(Auth.ID, identity.getId());
req.set(Auth.CNAME, client.getName());
store.set(identity);
}
} catch (HttpAction e) {
throw new TechnicalException("Unexpected HTTP action", e);
}
}
}
return identity;
});
if (profile == null) {
// try stateful auth
Boolean redirected = find(finder, clients, ctx, null, clientName, client -> {
if (useSession.test(client)) {
// indirect client, start authentication
try {
String queryString = req.queryString().map(it -> "?" + it).orElse("");
final String requestedUrl = req.path() + queryString;
log.debug("requestedUrl: {}", requestedUrl);
ctx.setSessionAttribute(Pac4jConstants.REQUESTED_URL, requestedUrl);
client.redirect(ctx);
rsp.end();
} catch (HttpAction ex) {
new AuthResponse(rsp).handle(client, ex);
}
return Boolean.TRUE;
} else {
return null;
}
});
if (redirected != Boolean.TRUE) {
throw new Err(Status.UNAUTHORIZED);
}
} else {
log.debug("profile found: {}", profile);
seed(req, profileType, profile);
}
}
private String profileID(final boolean useSession, final Request req) {
return req.<String>ifGet(Auth.ID)
.orElseGet(() -> useSession ? req.session().get(Auth.ID).value(null) : null);
}
@SuppressWarnings("rawtypes")
private <T> T find(final ClientFinder finder, final Clients clients, final WebContext ctx,
final Class<? extends Client<?, ?>> clientType, final String clientName,
final CheckedFunction1<Client, T> fn) throws Throwable {
List<Client> result = finder.find(clients, ctx, clientName);
for (Client client : result) {
T value = fn.apply(client);
if (value != null) {
return value;
}
}
return null;
}
@SuppressWarnings("rawtypes")
private void seed(final Request req, Class type, final Object profile) {
while (type != Object.class) {
req.set(type, profile);
type = type.getSuperclass();
}
}
}