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 org.springframework.security.core.GrantedAuthority;
import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
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;
/**
* 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
* @see PreAuthenticatedAuthenticationTokenMixin
* @since 4.2
*/
class PreAuthenticatedAuthenticationTokenDeserializer extends JsonDeserializer {
/**
* 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 {
PreAuthenticatedAuthenticationToken token = null;
ObjectMapper mapper = (ObjectMapper) jp.getCodec();
JsonNode jsonNode = mapper.readTree(jp);
Boolean authenticated = readJsonNode(jsonNode, "authenticated").asBoolean();
JsonNode principalNode = readJsonNode(jsonNode, "principal");
Object principal = null;
if (principalNode.isObject()) {
principal = mapper.readValue(principalNode.traverse(mapper), Object.class);
} else {
principal = principalNode.asText();
}
Object credentials = readJsonNode(jsonNode, "credentials").asText();
List authorities = mapper.readValue(
readJsonNode(jsonNode, "authorities").traverse(mapper), new TypeReference>() {
});
if (authenticated) {
token = new PreAuthenticatedAuthenticationToken(principal, credentials, authorities);
} else {
token = new PreAuthenticatedAuthenticationToken(principal, credentials);
}
token.setDetails(readJsonNode(jsonNode, "details"));
return token;
}
private JsonNode readJsonNode(JsonNode jsonNode, String field) {
return jsonNode.has(field) ? jsonNode.get(field) : MissingNode.getInstance();
}
}