1 /*
2 * Copyright 2020 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.bremersee.security;
18
19 import java.net.InetAddress;
20 import java.net.InetSocketAddress;
21 import java.util.Optional;
22 import org.springframework.http.server.reactive.ServerHttpRequest;
23 import org.springframework.security.web.server.util.matcher.ServerWebExchangeMatcher;
24 import org.springframework.web.server.ServerWebExchange;
25 import reactor.core.publisher.Mono;
26
27 /**
28 * The type Reactive ip address matcher.
29 *
30 * @author Christian Bremer
31 */
32 public class ReactiveIpAddressMatcher extends IpAddressMatcher implements ServerWebExchangeMatcher {
33
34 /**
35 * Takes a specific IP address or a range specified using the IP/Netmask (e.g. 192.168.1.0/24 or 202.24.0.0/14).
36 *
37 * @param ipAddress the address or range of addresses from which the request must come.
38 */
39 public ReactiveIpAddressMatcher(String ipAddress) {
40 super(ipAddress);
41 }
42
43 /**
44 * Checks whether the remote address of the request matches the ip of this matcher.
45 *
46 * @param exchange the exchange
47 * @return {@code true} if the remote adaress matches, otherwise {@code false}
48 */
49 public boolean matchesRemoteAddress(ServerWebExchange exchange) {
50 return Optional.ofNullable(exchange)
51 .map(ServerWebExchange::getRequest)
52 .map(ServerHttpRequest::getRemoteAddress)
53 .map(InetSocketAddress::getAddress)
54 .map(InetAddress::getHostAddress)
55 .map(this::matches)
56 .orElse(false);
57 }
58
59 @Override
60 public Mono<MatchResult> matches(ServerWebExchange exchange) {
61 return matchesRemoteAddress(exchange) ? MatchResult.match() : MatchResult.notMatch();
62 }
63
64 }