mirror of https://git.matrix.org/git/olm.git
556 lines
20 KiB
C++
556 lines
20 KiB
C++
/*
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* Copyright 2016 OpenMarket Ltd
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* Copyright 2016 Vector Creations Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "olm_outbound_group_session.h"
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using namespace AndroidOlmSdk;
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/**
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* Release the session allocation made by initializeOutboundGroupSessionMemory().<br>
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* This method MUST be called when java counter part account instance is done.
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*
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*/
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JNIEXPORT void OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(releaseSessionJni)(JNIEnv *env, jobject thiz)
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{
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LOGD("## releaseSessionJni(): OutBound group session IN");
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OlmOutboundGroupSession* sessionPtr = (OlmOutboundGroupSession*)getOutboundGroupSessionInstanceId(env,thiz);
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if (!sessionPtr)
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{
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LOGE(" ## releaseSessionJni(): failure - invalid outbound group session instance");
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}
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else
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{
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LOGD(" ## releaseSessionJni(): sessionPtr=%p",sessionPtr);
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#ifdef ENABLE_JNI_LOG
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size_t retCode = olm_clear_outbound_group_session(sessionPtr);
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LOGD(" ## releaseSessionJni(): clear_outbound_group_session=%lu",static_cast<long unsigned int>(retCode));
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#else
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olm_clear_outbound_group_session(sessionPtr);
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#endif
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LOGD(" ## releaseSessionJni(): free IN");
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free(sessionPtr);
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LOGD(" ## releaseSessionJni(): free OUT");
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}
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}
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/**
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* Initialize a new outbound group session and return it to JAVA side.<br>
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* Since a C prt is returned as a jlong, special care will be taken
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* to make the cast (OlmOutboundGroupSession* => jlong) platform independent.
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* @return the initialized OlmOutboundGroupSession* instance or throw an exception
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**/
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JNIEXPORT jlong OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *env, jobject thiz)
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{
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const char* errorMessage = NULL;
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OlmOutboundGroupSession* sessionPtr = NULL;
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size_t sessionSize = 0;
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LOGD("## createNewSessionJni(): outbound group session IN");
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sessionSize = olm_outbound_group_session_size();
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if (0 == sessionSize)
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{
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LOGE(" ## createNewSessionJni(): failure - outbound group session size = 0");
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errorMessage = "outbound group session size = 0";
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}
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else if (!(sessionPtr = (OlmOutboundGroupSession*)malloc(sessionSize)))
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{
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LOGE(" ## createNewSessionJni(): failure - outbound group session OOM");
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errorMessage = "outbound group session OOM";
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}
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else
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{
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sessionPtr = olm_outbound_group_session(sessionPtr);
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LOGD(" ## createNewSessionJni(): success - outbound group session size=%lu",static_cast<long unsigned int>(sessionSize));
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// compute random buffer
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size_t randomLength = olm_init_outbound_group_session_random_length(sessionPtr);
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uint8_t *randomBuffPtr = NULL;
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LOGW(" ## createNewSessionJni(): randomLength=%lu",static_cast<long unsigned int>(randomLength));
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if ((0 != randomLength) && !setRandomInBuffer(env, &randomBuffPtr, randomLength))
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{
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LOGE(" ## createNewSessionJni(): failure - random buffer init");
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errorMessage = "random buffer init";
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}
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else
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{
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if (0 == randomLength)
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{
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LOGW(" ## createNewSessionJni(): random buffer is not required");
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}
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size_t sessionResult = olm_init_outbound_group_session(sessionPtr, randomBuffPtr, randomLength);
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if (sessionResult == olm_error()) {
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errorMessage = (const char *)olm_outbound_group_session_last_error(sessionPtr);
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LOGE(" ## createNewSessionJni(): failure - init outbound session creation Msg=%s", errorMessage);
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}
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else
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{
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LOGD(" ## createNewSessionJni(): success - result=%lu", static_cast<long unsigned int>(sessionResult));
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}
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// clear the random buffer
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memset(randomBuffPtr, 0, randomLength);
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free(randomBuffPtr);
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}
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}
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if (errorMessage)
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{
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if (sessionPtr)
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{
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olm_clear_outbound_group_session(sessionPtr);
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free(sessionPtr);
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}
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env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
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}
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return (jlong)(intptr_t)sessionPtr;
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}
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/**
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* Return the session identifier.
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* An exception is thrown if the operation fails.
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* @return the session identifier
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*/
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JNIEXPORT jbyteArray OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(sessionIdentifierJni)(JNIEnv *env, jobject thiz)
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{
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LOGD("## sessionIdentifierJni(): outbound group session IN");
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const char* errorMessage = NULL;
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OlmOutboundGroupSession *sessionPtr = (OlmOutboundGroupSession*)getOutboundGroupSessionInstanceId(env,thiz);
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jbyteArray returnValue = 0;
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if (!sessionPtr)
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{
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LOGE(" ## sessionIdentifierJni(): failure - invalid outbound group session instance");
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errorMessage = "invalid outbound group session instance";
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}
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else
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{
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// get the size to alloc
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size_t lengthSessionId = olm_outbound_group_session_id_length(sessionPtr);
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LOGD(" ## sessionIdentifierJni(): outbound group session lengthSessionId=%lu",static_cast<long unsigned int>(lengthSessionId));
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uint8_t *sessionIdPtr = (uint8_t*)malloc(lengthSessionId*sizeof(uint8_t));
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if (!sessionIdPtr)
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{
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LOGE(" ## sessionIdentifierJni(): failure - outbound identifier allocation OOM");
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errorMessage = "outbound identifier allocation OOM";
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}
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else
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{
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size_t result = olm_outbound_group_session_id(sessionPtr, sessionIdPtr, lengthSessionId);
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if (result == olm_error())
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{
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errorMessage = reinterpret_cast<const char*>(olm_outbound_group_session_last_error(sessionPtr));
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LOGE(" ## sessionIdentifierJni(): failure - outbound group session identifier failure Msg=%s", errorMessage);
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}
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else
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{
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returnValue = env->NewByteArray(result);
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env->SetByteArrayRegion(returnValue, 0 , result, (jbyte*)sessionIdPtr);
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LOGD(" ## sessionIdentifierJni(): success - outbound group session identifier result=%lu sessionId= %.*s",static_cast<long unsigned int>(result), static_cast<int>(result), reinterpret_cast<char*>(sessionIdPtr));
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}
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// free alloc
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free(sessionIdPtr);
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}
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}
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if (errorMessage)
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{
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env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
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}
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return returnValue;
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}
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/**
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* Get the current message index for this session.<br>
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* Each message is sent with an increasing index, this
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* method returns the index for the next message.
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* An exception is thrown if the operation fails.
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* @return current session index
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*/
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JNIEXPORT jint OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(messageIndexJni)(JNIEnv *env, jobject thiz)
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{
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OlmOutboundGroupSession *sessionPtr = NULL;
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jint indexRetValue = 0;
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LOGD("## messageIndexJni(): IN");
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if (!(sessionPtr = (OlmOutboundGroupSession*)getOutboundGroupSessionInstanceId(env,thiz)))
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{
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LOGE(" ## messageIndexJni(): failure - invalid outbound group session instance");
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}
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else
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{
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indexRetValue = static_cast<jint>(olm_outbound_group_session_message_index(sessionPtr));
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}
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LOGD(" ## messageIndexJni(): success - index=%d",indexRetValue);
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return indexRetValue;
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}
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/**
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* Return the session key.
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* An exception is thrown if the operation fails.
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* @return the session key
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*/
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JNIEXPORT jbyteArray OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(sessionKeyJni)(JNIEnv *env, jobject thiz)
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{
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LOGD("## sessionKeyJni(): outbound group session IN");
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const char* errorMessage = NULL;
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OlmOutboundGroupSession *sessionPtr = (OlmOutboundGroupSession*)getOutboundGroupSessionInstanceId(env,thiz);
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jbyteArray returnValue = 0;
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if (!sessionPtr)
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{
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LOGE(" ## sessionKeyJni(): failure - invalid outbound group session instance");
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errorMessage = "invalid outbound group session instance";
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}
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else
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{
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// get the size to alloc
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size_t sessionKeyLength = olm_outbound_group_session_key_length(sessionPtr);
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LOGD(" ## sessionKeyJni(): sessionKeyLength=%lu",static_cast<long unsigned int>(sessionKeyLength));
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uint8_t *sessionKeyPtr = (uint8_t*)malloc(sessionKeyLength*sizeof(uint8_t));
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if (!sessionKeyPtr)
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{
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LOGE(" ## sessionKeyJni(): failure - session key allocation OOM");
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errorMessage = "session key allocation OOM";
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}
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else
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{
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size_t result = olm_outbound_group_session_key(sessionPtr, sessionKeyPtr, sessionKeyLength);
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if (result == olm_error())
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{
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errorMessage = (const char *)olm_outbound_group_session_last_error(sessionPtr);
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LOGE(" ## sessionKeyJni(): failure - session key failure Msg=%s", errorMessage);
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}
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else
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{
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LOGD(" ## sessionKeyJni(): success - outbound group session key result=%lu sessionKey=%.*s",static_cast<long unsigned int>(result), static_cast<int>(result), reinterpret_cast<char*>(sessionKeyPtr));
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returnValue = env->NewByteArray(result);
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env->SetByteArrayRegion(returnValue, 0 , result, (jbyte*)sessionKeyPtr);
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}
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// free alloc
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free(sessionKeyPtr);
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}
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}
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if (errorMessage)
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{
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env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
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}
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return returnValue;
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}
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/**
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* Encrypt a bytes buffer messages.
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* An exception is thrown if the operation fails.
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* @param aClearMsgBuffer the message to encode
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* @return the encoded message
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*/
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JNIEXPORT jbyteArray OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(encryptMessageJni)(JNIEnv *env, jobject thiz, jbyteArray aClearMsgBuffer)
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{
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LOGD("## encryptMessageJni(): IN");
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const char* errorMessage = NULL;
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jbyteArray encryptedMsgRet = 0;
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OlmOutboundGroupSession *sessionPtr = NULL;
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jbyte* clearMsgPtr = NULL;
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jboolean clearMsgIsCopied = JNI_FALSE;
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if (!(sessionPtr = (OlmOutboundGroupSession*)getOutboundGroupSessionInstanceId(env,thiz)))
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{
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LOGE(" ## encryptMessageJni(): failure - invalid outbound group session ptr=NULL");
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errorMessage = "invalid outbound group session ptr=NULL";
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}
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else if (!aClearMsgBuffer)
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{
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LOGE(" ## encryptMessageJni(): failure - invalid clear message");
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errorMessage = "invalid clear message";
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}
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else if (!(clearMsgPtr = env->GetByteArrayElements(aClearMsgBuffer, &clearMsgIsCopied)))
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{
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LOGE(" ## encryptMessageJni(): failure - clear message JNI allocation OOM");
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errorMessage = "clear message JNI allocation OOM";
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}
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else
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{
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// get clear message length
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size_t clearMsgLength = (size_t)env->GetArrayLength(aClearMsgBuffer);
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LOGD(" ## encryptMessageJni(): clearMsgLength=%lu",static_cast<long unsigned int>(clearMsgLength));
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// compute max encrypted length
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size_t encryptedMsgLength = olm_group_encrypt_message_length(sessionPtr,clearMsgLength);
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uint8_t *encryptedMsgPtr = (uint8_t*)malloc(encryptedMsgLength*sizeof(uint8_t));
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if (!encryptedMsgPtr)
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{
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LOGE(" ## encryptMessageJni(): failure - encryptedMsgPtr buffer OOM");
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errorMessage = "encryptedMsgPtr buffer OOM";
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}
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else
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{
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LOGD(" ## encryptMessageJni(): estimated encryptedMsgLength=%lu",static_cast<long unsigned int>(encryptedMsgLength));
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size_t encryptedLength = olm_group_encrypt(sessionPtr,
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(uint8_t*)clearMsgPtr,
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clearMsgLength,
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encryptedMsgPtr,
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encryptedMsgLength);
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if (encryptedLength == olm_error())
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{
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errorMessage = olm_outbound_group_session_last_error(sessionPtr);
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LOGE(" ## encryptMessageJni(): failure - olm_group_decrypt_max_plaintext_length Msg=%s", errorMessage);
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}
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else
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{
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LOGD(" ## encryptMessageJni(): encrypted returnedLg=%lu plainTextMsgPtr=%.*s",static_cast<long unsigned int>(encryptedLength), static_cast<int>(encryptedLength), reinterpret_cast<char*>(encryptedMsgPtr));
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encryptedMsgRet = env->NewByteArray(encryptedLength);
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env->SetByteArrayRegion(encryptedMsgRet, 0 , encryptedLength, (jbyte*)encryptedMsgPtr);
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}
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free(encryptedMsgPtr);
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}
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}
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// free alloc
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if (clearMsgPtr)
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{
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if (clearMsgIsCopied)
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{
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memset(clearMsgPtr, 0, (size_t)env->GetArrayLength(aClearMsgBuffer));
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}
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env->ReleaseByteArrayElements(aClearMsgBuffer, clearMsgPtr, JNI_ABORT);
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}
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if (errorMessage)
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{
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env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
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}
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return encryptedMsgRet;
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}
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/**
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* Serialize and encrypt session instance into a base64 string.<br>
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* An exception is thrown if the operation fails.
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* @param aKey key used to encrypt the serialized session data
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* @return a base64 string if operation succeed, null otherwise
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**/
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JNIEXPORT jbyteArray OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(serializeJni)(JNIEnv *env, jobject thiz, jbyteArray aKeyBuffer)
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{
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const char* errorMessage = NULL;
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jbyteArray returnValue = 0;
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jbyte* keyPtr = NULL;
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OlmOutboundGroupSession* sessionPtr = NULL;
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LOGD("## outbound group session serializeJni(): IN");
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if (!(sessionPtr = (OlmOutboundGroupSession*)getOutboundGroupSessionInstanceId(env,thiz)))
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{
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LOGE(" ## serializeJni(): failure - invalid session ptr");
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errorMessage = "invalid session ptr";
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}
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else if (!aKeyBuffer)
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{
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LOGE(" ## serializeJni(): failure - invalid key");
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errorMessage = "invalid key";
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}
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else if (!(keyPtr = env->GetByteArrayElements(aKeyBuffer, 0)))
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{
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LOGE(" ## serializeJni(): failure - keyPtr JNI allocation OOM");
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errorMessage = "keyPtr JNI allocation OOM";
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}
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else
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{
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size_t pickledLength = olm_pickle_outbound_group_session_length(sessionPtr);
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size_t keyLength = (size_t)env->GetArrayLength(aKeyBuffer);
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LOGD(" ## serializeJni(): pickledLength=%lu keyLength=%lu",static_cast<long unsigned int>(pickledLength), static_cast<long unsigned int>(keyLength));
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void *pickledPtr = malloc(pickledLength*sizeof(uint8_t));
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if(!pickledPtr)
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{
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LOGE(" ## serializeJni(): failure - pickledPtr buffer OOM");
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errorMessage = "pickledPtr buffer OOM";
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}
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else
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{
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size_t result = olm_pickle_outbound_group_session(sessionPtr,
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(void const *)keyPtr,
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keyLength,
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(void*)pickledPtr,
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pickledLength);
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if (result == olm_error())
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{
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errorMessage = olm_outbound_group_session_last_error(sessionPtr);
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LOGE(" ## serializeJni(): failure - olm_pickle_outbound_group_session() Msg=%s", errorMessage);
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}
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else
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{
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LOGD(" ## serializeJni(): success - result=%lu pickled=%.*s", static_cast<long unsigned int>(result), static_cast<int>(result), static_cast<char*>(pickledPtr));
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returnValue = env->NewByteArray(pickledLength);
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env->SetByteArrayRegion(returnValue, 0 , pickledLength, (jbyte*)pickledPtr);
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}
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}
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free(pickledPtr);
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}
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// free alloc
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if (keyPtr)
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{
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env->ReleaseByteArrayElements(aKeyBuffer, keyPtr, JNI_ABORT);
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}
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if (errorMessage)
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{
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env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
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}
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return returnValue;
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}
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/**
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* Allocate a new session and initialize it with the serialisation data.<br>
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* An exception is thrown if the operation fails.
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* @param aSerializedData the session serialisation buffer
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* @param aKey the key used to encrypt the serialized account data
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* @return the deserialized session
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**/
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JNIEXPORT jlong OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(deserializeJni)(JNIEnv *env, jobject thiz, jbyteArray aSerializedDataBuffer, jbyteArray aKeyBuffer)
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{
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const char* errorMessage = NULL;
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size_t sessionSize = olm_outbound_group_session_size();
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OlmOutboundGroupSession* sessionPtr = NULL;
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jbyte* keyPtr = NULL;
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jbyte* pickledPtr = NULL;
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LOGD("## deserializeJni(): IN");
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if (!sessionSize)
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{
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LOGE(" ## deserializeJni(): failure - outbound group session size = 0");
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errorMessage = "outbound group session size = 0";
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}
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else if (!(sessionPtr = (OlmOutboundGroupSession*)malloc(sessionSize)))
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{
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LOGE(" ## deserializeJni(): failure - session failure OOM");
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errorMessage = "session failure OOM";
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}
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else if (!aKeyBuffer)
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{
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LOGE(" ## deserializeJni(): failure - invalid key");
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errorMessage = "invalid key";
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}
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else if (!aSerializedDataBuffer)
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{
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LOGE(" ## deserializeJni(): failure - serialized data");
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errorMessage = "invalid serialized data";
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}
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else if (!(keyPtr = env->GetByteArrayElements(aKeyBuffer, 0)))
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{
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LOGE(" ## deserializeJni(): failure - keyPtr JNI allocation OOM");
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errorMessage = "keyPtr JNI allocation OOM";
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}
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else if (!(pickledPtr = env->GetByteArrayElements(aSerializedDataBuffer, 0)))
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{
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LOGE(" ## deserializeJni(): failure - pickledPtr JNI allocation OOM");
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errorMessage = "pickledPtr JNI allocation OOM";
|
|
}
|
|
else
|
|
{
|
|
sessionPtr = olm_outbound_group_session(sessionPtr);
|
|
size_t pickledLength = (size_t)env->GetArrayLength(aSerializedDataBuffer);
|
|
size_t keyLength = (size_t)env->GetArrayLength(aKeyBuffer);
|
|
LOGD(" ## deserializeJni(): pickledLength=%lu keyLength=%lu",static_cast<long unsigned int>(pickledLength), static_cast<long unsigned int>(keyLength));
|
|
LOGD(" ## deserializeJni(): pickled=%.*s", static_cast<int>(pickledLength), (char const *)pickledPtr);
|
|
|
|
size_t result = olm_unpickle_outbound_group_session(sessionPtr,
|
|
(void const *)keyPtr,
|
|
keyLength,
|
|
(void*)pickledPtr,
|
|
pickledLength);
|
|
if (result == olm_error())
|
|
{
|
|
errorMessage = olm_outbound_group_session_last_error(sessionPtr);
|
|
LOGE(" ## deserializeJni(): failure - olm_unpickle_outbound_group_session() Msg=%s", errorMessage);
|
|
}
|
|
else
|
|
{
|
|
LOGD(" ## deserializeJni(): success - result=%lu ", static_cast<long unsigned int>(result));
|
|
}
|
|
}
|
|
|
|
// free alloc
|
|
if (keyPtr)
|
|
{
|
|
env->ReleaseByteArrayElements(aKeyBuffer, keyPtr, JNI_ABORT);
|
|
}
|
|
|
|
if (pickledPtr)
|
|
{
|
|
env->ReleaseByteArrayElements(aSerializedDataBuffer, pickledPtr, JNI_ABORT);
|
|
}
|
|
|
|
if (errorMessage)
|
|
{
|
|
if (sessionPtr)
|
|
{
|
|
olm_clear_outbound_group_session(sessionPtr);
|
|
free(sessionPtr);
|
|
}
|
|
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
|
|
}
|
|
|
|
return (jlong)(intptr_t)sessionPtr;
|
|
}
|
|
|