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/**
* Created by pedrocon on 13/10/2016.
*/
/*
* Copyright 2016 OpenMarket Ltd
*
* 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
*
* http://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.matrix.olm;
import android.text.TextUtils;
import android.util.Log;
import java.io.Serializable;
public class OlmInboundGroupSession implements Serializable {
private static final long serialVersionUID = -772028491251653253L;
private static final String LOG_TAG = "OlmInboundGroupSession";
/** session raw pointer value returned by JNI.<br>
* this value uniquely identifies the native inbound group session instance.
*/
private long mNativeOlmInboundGroupSessionId;
/**
* Getter on the native inbound group session ID.
* @return native inbound group session ID
*/
public long getOlmInboundGroupSessionId() {
return mNativeOlmInboundGroupSessionId;
}
/**
* Constructor.<br>
* Create and save a new native session instance ID and start a new inbound group session.
* The session key parameter is retrieved from an outbound group session
* See {@link #initNewSession()} and {@link #initInboundGroupSessionWithSessionKey(String)}
* @param aSessionKey session key
* @throws OlmException constructor failure
*/
public OlmInboundGroupSession(String aSessionKey) throws OlmException {
if(initNewSession()) {
if( 0 != initInboundGroupSessionWithSessionKey(aSessionKey)) {
releaseSession();// prevent memory leak before throwing
throw new OlmException(OlmException.EXCEPTION_CODE_INIT_INBOUND_GROUP_SESSION,OlmException.EXCEPTION_MSG_INIT_INBOUND_GROUP_SESSION);
}
} else {
throw new OlmException(OlmException.EXCEPTION_CODE_CREATE_INBOUND_GROUP_SESSION, OlmException.EXCEPTION_MSG_NEW_INBOUND_GROUP_SESSION);
}
}
/**
* Release native session and invalid its JAVA reference counter part.<br>
* Public API for {@link #releaseSessionJni()}.
*/
public void releaseSession(){
releaseSessionJni();
mNativeOlmInboundGroupSessionId = 0;
}
/**
* Destroy the corresponding OLM inbound group session native object.<br>
* This method must ALWAYS be called when this JAVA instance
* is destroyed (ie. garbage collected) to prevent memory leak in native side.
* See {@link #initNewSessionJni()}.
*/
private native void releaseSessionJni();
/**
* Create and save the session native instance ID.<br>
* To be called before any other API call.
* @return true if init succeed, false otherwise.
*/
private boolean initNewSession() {
boolean retCode = false;
if(0 != (mNativeOlmInboundGroupSessionId = initNewSessionJni())){
retCode = true;
}
return retCode;
}
/**
* Create the corresponding OLM inbound group session in native side.<br>
* Do not forget to call {@link #releaseSession()} when JAVA side is done.
* @return native session instance identifier (see {@link #mNativeOlmInboundGroupSessionId})
*/
private native long initNewSessionJni();
/**
* Start a new inbound group session.<br>
* The session key parameter is retrieved from a outbound group session
* see {@link OlmOutboundGroupSession#sessionKey()}
* @param aSessionKey session key
* @return 0 if operation succeed, -1 otherwise
*/
private int initInboundGroupSessionWithSessionKey(String aSessionKey) {
int retCode = -1;
if(TextUtils.isEmpty(aSessionKey)){
Log.e(LOG_TAG, "## initInboundGroupSessionWithSessionKey(): invalid session key");
} else {
retCode = initInboundGroupSessionWithSessionKeyJni(aSessionKey);
}
return retCode;
}
private native int initInboundGroupSessionWithSessionKeyJni(String aSessionKey);
public String sessionIdentifier() {
return sessionIdentifierJni();
}
private native String sessionIdentifierJni();
public String decryptMessage(String aEncryptedMsg) {
return decryptMessageJni(aEncryptedMsg);
}
private native String decryptMessageJni(String aEncryptedMsg);
// TODO missing API: initWithSerializedData
// TODO missing API: serializeDataWithKey
// TODO missing API: initWithCoder
// TODO missing API: encodeWithCoder
}
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