com.virgilsecurity.sdk.securechat.utils.SessionStateResolver Maven / Gradle / Ivy
/*
* Copyright (c) 2017, Virgil Security, Inc.
*
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of virgil nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.virgilsecurity.sdk.securechat.utils;
import java.lang.reflect.Field;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.annotations.SerializedName;
import com.virgilsecurity.sdk.securechat.model.InitiationMessage;
import com.virgilsecurity.sdk.securechat.model.InitiatorSessionState;
import com.virgilsecurity.sdk.securechat.model.Message;
import com.virgilsecurity.sdk.securechat.model.ResponderSessionState;
/**
* @author Andrii Iakovenko
*
*/
public class SessionStateResolver {
private static final Set INITIATOR_SESSION_STATE_FIELDS;
private static final Set RESPONDER_SESSION_STATE_FIELDS;
private static final Set INITIALIZATION_MESSAGE_FIELDS;
private static final Set REGULAR_MESSAGE_FIELDS;
static {
INITIATOR_SESSION_STATE_FIELDS = Collections
.unmodifiableSet(getSerializedNameValues(InitiatorSessionState.class));
RESPONDER_SESSION_STATE_FIELDS = Collections
.unmodifiableSet(getSerializedNameValues(ResponderSessionState.class));
INITIALIZATION_MESSAGE_FIELDS = Collections.unmodifiableSet(getSerializedNameValues(InitiationMessage.class));
REGULAR_MESSAGE_FIELDS = Collections.unmodifiableSet(getSerializedNameValues(Message.class));
}
private static Set getSerializedNameValues(Class clazz) {
Set fields = new HashSet<>();
for (Field field : clazz.getDeclaredFields()) {
SerializedName serializedName = field.getAnnotation(SerializedName.class);
if (serializedName != null) {
fields.add(serializedName.value());
}
}
return fields;
}
public static boolean isInitiatorSessionState(String json) {
JsonObject jsObj = (JsonObject) new JsonParser().parse(json);
for (String fieldName : INITIATOR_SESSION_STATE_FIELDS) {
if (!jsObj.has(fieldName)) {
return false;
}
}
return true;
}
public static boolean isResponderSessionState(String json) {
JsonObject jsObj = (JsonObject) new JsonParser().parse(json);
for (String fieldName : RESPONDER_SESSION_STATE_FIELDS) {
if (!jsObj.has(fieldName)) {
return false;
}
}
return true;
}
public static boolean isInitiationMessage(String json) {
JsonObject jsObj = (JsonObject) new JsonParser().parse(json);
for (String fieldName : INITIALIZATION_MESSAGE_FIELDS) {
if (!jsObj.has(fieldName)) {
return false;
}
}
return true;
}
public static boolean isRegularMessage(String json) {
JsonObject jsObj = (JsonObject) new JsonParser().parse(json);
for (String fieldName : REGULAR_MESSAGE_FIELDS) {
if (!jsObj.has(fieldName)) {
return false;
}
}
return true;
}
}