org.springframework.security.web.jackson2.PreAuthenticatedAuthenticationTokenDeserializer Maven / Gradle / Ivy
/*
* Copyright 2015-2018 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
*
* https://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.jackson2;
import java.io.IOException;
import java.util.List;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.MissingNode;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
/**
* Custom deserializer for {@link PreAuthenticatedAuthenticationToken}. At the time of
* deserialization it will invoke suitable constructor depending on the value of
* authenticated property. It will ensure that the token's state must not change.
*
* This deserializer is already registered with
* {@link PreAuthenticatedAuthenticationTokenMixin} but you can also registered it with
* your own mixin class.
*
* @author Jitendra Singh
* @since 4.2
* @see PreAuthenticatedAuthenticationTokenMixin
*/
class PreAuthenticatedAuthenticationTokenDeserializer extends JsonDeserializer {
private static final TypeReference> GRANTED_AUTHORITY_LIST = new TypeReference>() {
};
/**
* This method construct {@link PreAuthenticatedAuthenticationToken} object from
* serialized json.
* @param jp the JsonParser
* @param ctxt the DeserializationContext
* @return the user
* @throws IOException if a exception during IO occurs
* @throws JsonProcessingException if an error during JSON processing occurs
*/
@Override
public PreAuthenticatedAuthenticationToken deserialize(JsonParser jp, DeserializationContext ctxt)
throws IOException, JsonProcessingException {
ObjectMapper mapper = (ObjectMapper) jp.getCodec();
JsonNode jsonNode = mapper.readTree(jp);
Boolean authenticated = readJsonNode(jsonNode, "authenticated").asBoolean();
JsonNode principalNode = readJsonNode(jsonNode, "principal");
Object principal = (!principalNode.isObject()) ? principalNode.asText()
: mapper.readValue(principalNode.traverse(mapper), Object.class);
Object credentials = readJsonNode(jsonNode, "credentials").asText();
List authorities = mapper.readValue(readJsonNode(jsonNode, "authorities").traverse(mapper),
GRANTED_AUTHORITY_LIST);
PreAuthenticatedAuthenticationToken token = (!authenticated)
? new PreAuthenticatedAuthenticationToken(principal, credentials)
: new PreAuthenticatedAuthenticationToken(principal, credentials, authorities);
token.setDetails(readJsonNode(jsonNode, "details"));
return token;
}
private JsonNode readJsonNode(JsonNode jsonNode, String field) {
return jsonNode.has(field) ? jsonNode.get(field) : MissingNode.getInstance();
}
}