/**
* Copyright (C) 2013-2015 all@code-story.net
*
* 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 net.codestory.http.filters.basic;
import static java.nio.charset.StandardCharsets.*;
import static net.codestory.http.constants.Headers.*;
import static net.codestory.http.payload.Payload.*;
import java.util.*;
import net.codestory.http.*;
import net.codestory.http.filters.*;
import net.codestory.http.payload.*;
import net.codestory.http.security.*;
public class BasicAuthFilter implements Filter {
private final String uriPrefix;
private final String realm;
private final Users users;
public BasicAuthFilter(String uriPrefix, String realm, Users users) {
this.uriPrefix = uriPrefix;
this.realm = realm;
this.users = users;
}
@Override
public boolean matches(String uri, Context context) {
return uri.startsWith(uriPrefix);
}
@Override
public Payload apply(String uri, Context context, PayloadSupplier nextFilter) throws Exception {
String authorization = context.header(AUTHORIZATION);
if ((authorization == null) || (!authorization.toLowerCase(Locale.ENGLISH).startsWith("basic "))) {
return unauthorized(realm);
}
String base64Pwd = authorization.substring("basic ".length());
String auth = new String(Base64.getDecoder().decode(base64Pwd), UTF_8);
int i = auth.indexOf(':');
if (i < 0) {
return Payload.badRequest();
}
String login = auth.substring(0, i);
String password = auth.substring(i + 1);
User user = users.find(login, password);
if (user == null) {
return unauthorized(realm);
}
context.setCurrentUser(user);
return nextFilter.get().withHeader(CACHE_CONTROL, "must-revalidate");
}
}