/*
*
* * Copyright 2002-2017 the original author or authors.
* *
* * 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.springframework.security.web.server;
import java.util.Base64;
import java.util.function.Function;
import org.springframework.core.convert.converter.Converter;
import org.springframework.http.HttpHeaders;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
/**
*
* @author Rob Winch
* @since 5.0
*/
public class HttpBasicAuthenticationConverter implements Function<ServerWebExchange,Mono<Authentication>> {
public static final String BASIC = "Basic ";
@Override
public Mono<Authentication> apply(ServerWebExchange serverWebExchange) {
ServerHttpRequest request = serverWebExchange.getRequest();
String authorization = request.getHeaders().getFirst(HttpHeaders.AUTHORIZATION);
if(authorization == null) {
return Mono.empty();
}
String credentials = authorization.length() <= BASIC.length() ?
"" : authorization.substring(BASIC.length(), authorization.length());
byte[] decodedCredentials = base64Decode(credentials);
String decodedAuthz = new String(decodedCredentials);
String[] userParts = decodedAuthz.split(":");
if(userParts.length != 2) {
return Mono.empty();
}
String username = userParts[0];
String password = userParts[1];
return Mono.just(new UsernamePasswordAuthenticationToken(username, password));
}
private byte[] base64Decode(String value) {
try {
return Base64.getDecoder().decode(value);
} catch(Exception e) {
return new byte[0];
}
}
}