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.spring.security.oauth2.server.resource.authentication;
18
19 import com.jayway.jsonpath.DocumentContext;
20 import com.jayway.jsonpath.JsonPath;
21 import com.jayway.jsonpath.Option;
22 import net.minidev.json.JSONValue;
23 import org.springframework.security.oauth2.jwt.Jwt;
24 import org.springframework.util.ObjectUtils;
25
26 /**
27 * The json path jwt parser.
28 *
29 * @author Christian Bremer
30 */
31 public class JsonPathJwtParser {
32
33 private static final com.jayway.jsonpath.Configuration jsonPathConf
34 = com.jayway.jsonpath.Configuration.builder().options(Option.SUPPRESS_EXCEPTIONS).build();
35
36 private final DocumentContext documentContext;
37
38 /**
39 * Instantiates a new json path jwt parser.
40 *
41 * @param jwt the jwt
42 */
43 JsonPathJwtParser(Jwt jwt) {
44 final String jsonStr = JSONValue.toJSONString(jwt.getClaims());
45 this.documentContext = JsonPath.parse(jsonStr, jsonPathConf);
46 }
47
48 /**
49 * Read the value of the given json path.
50 *
51 * @param <T> the type of the result
52 * @param jsonPath the json path
53 * @param resultClass the result class
54 * @return the value of the json path
55 */
56 <T> T read(String jsonPath, Class<T> resultClass) {
57 if (ObjectUtils.isEmpty(jsonPath)) {
58 return null;
59 }
60 return documentContext.read(jsonPath, resultClass);
61 }
62
63 }