mirror of https://git.matrix.org/git/olm.git
970 lines
36 KiB
C++
970 lines
36 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_session.h"
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using namespace AndroidOlmSdk;
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/**
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* Init memory allocation for a session creation.<br>
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* Make sure releaseSessionJni() is called when one is done with the session instance.
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* @return valid memory allocation, NULL otherwise
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**/
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OlmSession* initializeSessionMemory()
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{
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size_t sessionSize = olm_session_size();
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OlmSession* sessionPtr = (OlmSession*)malloc(sessionSize);
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if (sessionPtr)
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{
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// init session object
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sessionPtr = olm_session(sessionPtr);
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LOGD("## initializeSessionMemory(): success - OLM session size=%lu",static_cast<long unsigned int>(sessionSize));
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}
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else
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{
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LOGE("## initializeSessionMemory(): failure - OOM");
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}
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return sessionPtr;
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}
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JNIEXPORT jlong OLM_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *env, jobject thiz)
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{
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LOGD("## createNewSessionJni(): IN");
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OlmSession* accountPtr = initializeSessionMemory();
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if (!accountPtr)
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{
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LOGE("## initNewAccount(): failure - init session OOM");
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env->ThrowNew(env->FindClass("java/lang/Exception"), "init session OOM");
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}
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else
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{
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LOGD(" ## createNewSessionJni(): success - accountPtr=%p (jlong)(intptr_t)accountPtr=%lld",accountPtr,(jlong)(intptr_t)accountPtr);
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}
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return (jlong)(intptr_t)accountPtr;
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}
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JNIEXPORT void OLM_SESSION_FUNC_DEF(releaseSessionJni)(JNIEnv *env, jobject thiz)
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{
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LOGD("## releaseSessionJni(): IN");
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OlmSession* sessionPtr = getSessionInstanceId(env, thiz);
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if (!sessionPtr)
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{
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LOGE("## releaseSessionJni(): failure - invalid Session ptr=NULL");
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}
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else
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{
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olm_clear_session(sessionPtr);
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// even if free(NULL) does not crash, logs are performed for debug purpose
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free(sessionPtr);
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}
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}
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// *********************************************************************
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// ********************** OUTBOUND SESSION *****************************
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// *********************************************************************
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/**
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* Create a new in-bound session for sending/receiving messages from an
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* incoming PRE_KEY message.<br> The recipient is defined as the entity
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* with whom the session is established.
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* @param aOlmAccountId account instance
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* @param aTheirIdentityKey the identity key of the recipient
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* @param aTheirOneTimeKey the one time key of the recipient or an exception is thrown
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**/
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JNIEXPORT void OLM_SESSION_FUNC_DEF(initOutboundSessionJni)(JNIEnv *env, jobject thiz, jlong aOlmAccountId, jbyteArray aTheirIdentityKeyBuffer, jbyteArray aTheirOneTimeKeyBuffer)
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{
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OlmSession* sessionPtr = getSessionInstanceId(env, thiz);
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const char* errorMessage = NULL;
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OlmAccount* accountPtr = NULL;
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if (!sessionPtr)
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{
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LOGE("## initOutboundSessionJni(): failure - invalid Session ptr=NULL");
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errorMessage = "invalid Session ptr=NULL";
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}
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else if (!(accountPtr = (OlmAccount*)aOlmAccountId))
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{
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LOGE("## initOutboundSessionJni(): failure - invalid Account ptr=NULL");
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errorMessage = "invalid Account ptr=NULL";
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}
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else if (!aTheirIdentityKeyBuffer || !aTheirOneTimeKeyBuffer)
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{
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LOGE("## initOutboundSessionJni(): failure - invalid keys");
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errorMessage = "invalid keys";
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}
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else
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{
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size_t randomSize = olm_create_outbound_session_random_length(sessionPtr);
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uint8_t *randomBuffPtr = NULL;
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LOGD("## initOutboundSessionJni(): randomSize=%lu",static_cast<long unsigned int>(randomSize));
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if ( (0 != randomSize) && !setRandomInBuffer(env, &randomBuffPtr, randomSize))
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{
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LOGE("## initOutboundSessionJni(): 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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jbyte* theirIdentityKeyPtr = NULL;
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jbyte* theirOneTimeKeyPtr = NULL;
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// convert identity & one time keys to C strings
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if (!(theirIdentityKeyPtr = env->GetByteArrayElements(aTheirIdentityKeyBuffer, 0)))
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{
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LOGE("## initOutboundSessionJni(): failure - identityKey JNI allocation OOM");
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errorMessage = "identityKey JNI allocation OOM";
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}
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else if (!(theirOneTimeKeyPtr = env->GetByteArrayElements(aTheirOneTimeKeyBuffer, 0)))
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{
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LOGE("## initOutboundSessionJni(): failure - one time Key JNI allocation OOM");
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errorMessage = "one time Key JNI allocation OOM";
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}
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else
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{
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size_t theirIdentityKeyLength = (size_t)env->GetArrayLength(aTheirIdentityKeyBuffer);
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size_t theirOneTimeKeyLength = (size_t)env->GetArrayLength(aTheirOneTimeKeyBuffer);
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LOGD("## initOutboundSessionJni(): identityKey=%.*s oneTimeKey=%.*s", static_cast<int>(theirIdentityKeyLength), theirIdentityKeyPtr, static_cast<int>(theirOneTimeKeyLength), theirOneTimeKeyPtr);
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size_t sessionResult = olm_create_outbound_session(sessionPtr,
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accountPtr,
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theirIdentityKeyPtr,
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theirIdentityKeyLength,
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theirOneTimeKeyPtr,
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theirOneTimeKeyLength,
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(void*)randomBuffPtr,
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randomSize);
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if (sessionResult == olm_error()) {
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errorMessage = (const char *)olm_session_last_error(sessionPtr);
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LOGE("## initOutboundSessionJni(): failure - session creation Msg=%s", errorMessage);
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}
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else
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{
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LOGD("## initOutboundSessionJni(): success - result=%lu", static_cast<long unsigned int>(sessionResult));
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}
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}
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if (theirIdentityKeyPtr)
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{
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env->ReleaseByteArrayElements(aTheirIdentityKeyBuffer, theirIdentityKeyPtr, JNI_ABORT);
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}
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if (theirOneTimeKeyPtr)
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{
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env->ReleaseByteArrayElements(aTheirOneTimeKeyBuffer, theirOneTimeKeyPtr, JNI_ABORT);
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}
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if (randomBuffPtr)
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{
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memset(randomBuffPtr, 0, randomSize);
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free(randomBuffPtr);
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}
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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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}
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// *********************************************************************
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// *********************** INBOUND SESSION *****************************
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// *********************************************************************
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/**
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* Create a new in-bound session for sending/receiving messages from an
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* incoming PRE_KEY message.<br>
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* An exception is thrown if the operation fails.
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* @param aOlmAccountId account instance
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* @param aOneTimeKeyMsg PRE_KEY message
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*/
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JNIEXPORT void OLM_SESSION_FUNC_DEF(initInboundSessionJni)(JNIEnv *env, jobject thiz, jlong aOlmAccountId, jbyteArray aOneTimeKeyMsgBuffer)
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{
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const char* errorMessage = NULL;
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OlmSession *sessionPtr = getSessionInstanceId(env,thiz);
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OlmAccount *accountPtr = NULL;
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size_t sessionResult;
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if (!sessionPtr)
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{
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LOGE("## initInboundSessionJni(): failure - invalid Session ptr=NULL");
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errorMessage = "invalid Session ptr=NULL";
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}
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else if (!(accountPtr = (OlmAccount*)aOlmAccountId))
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{
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LOGE("## initInboundSessionJni(): failure - invalid Account ptr=NULL");
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errorMessage = "invalid Account ptr=NULL";
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}
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else if (!aOneTimeKeyMsgBuffer)
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{
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LOGE("## initInboundSessionJni(): failure - invalid message");
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errorMessage = "invalid message";
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}
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else
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{
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jbyte* messagePtr = env->GetByteArrayElements(aOneTimeKeyMsgBuffer, 0);
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if (!messagePtr)
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{
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LOGE("## initInboundSessionJni(): failure - message JNI allocation OOM");
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errorMessage = "message JNI allocation OOM";
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}
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else
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{
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size_t messageLength = (size_t)env->GetArrayLength(aOneTimeKeyMsgBuffer);
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LOGD("## initInboundSessionJni(): messageLength=%lu message=%.*s", static_cast<long unsigned int>(messageLength), static_cast<int>(messageLength), messagePtr);
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sessionResult = olm_create_inbound_session(sessionPtr, accountPtr, (void*)messagePtr , messageLength);
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if (sessionResult == olm_error())
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{
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errorMessage = olm_session_last_error(sessionPtr);
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LOGE("## initInboundSessionJni(): failure - init inbound session creation Msg=%s", errorMessage);
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}
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else
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{
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LOGD("## initInboundSessionJni(): success - result=%lu", static_cast<long unsigned int>(sessionResult));
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}
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// free local alloc
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env->ReleaseByteArrayElements(aOneTimeKeyMsgBuffer, messagePtr, JNI_ABORT);
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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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}
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/**
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* Create a new in-bound session for sending/receiving messages from an
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* incoming PRE_KEY message based on the recipient identity key.<br>
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* An exception is thrown if the operation fails.
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* @param aOlmAccountId account instance
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* @param aTheirIdentityKey the identity key of the recipient
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* @param aOneTimeKeyMsg encrypted message
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*/
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JNIEXPORT void OLM_SESSION_FUNC_DEF(initInboundSessionFromIdKeyJni)(JNIEnv *env, jobject thiz, jlong aOlmAccountId, jbyteArray aTheirIdentityKeyBuffer, jbyteArray aOneTimeKeyMsgBuffer)
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{
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const char* errorMessage = NULL;
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OlmSession *sessionPtr = getSessionInstanceId(env, thiz);
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OlmAccount *accountPtr = NULL;
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jbyte *messagePtr = NULL;
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jbyte *theirIdentityKeyPtr = NULL;
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size_t sessionResult;
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if (!sessionPtr)
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{
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LOGE("## initInboundSessionFromIdKeyJni(): failure - invalid Session ptr=NULL");
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errorMessage = "invalid Session ptr=NULL";
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}
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else if (!(accountPtr = (OlmAccount*)aOlmAccountId))
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{
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LOGE("## initInboundSessionFromIdKeyJni(): failure - invalid Account ptr=NULL");
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errorMessage = "invalid Account ptr=NULL";
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}
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else if (!aTheirIdentityKeyBuffer)
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{
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LOGE("## initInboundSessionFromIdKeyJni(): failure - invalid theirIdentityKey");
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errorMessage = "invalid theirIdentityKey";
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}
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else if (!aOneTimeKeyMsgBuffer)
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{
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LOGE("## initInboundSessionJni(): failure - invalid one time key message");
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errorMessage = "invalid invalid one time key message";
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}
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else if (!(messagePtr = env->GetByteArrayElements(aOneTimeKeyMsgBuffer, 0)))
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{
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LOGE("## initInboundSessionFromIdKeyJni(): failure - message JNI allocation OOM");
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errorMessage = "message JNI allocation OOM";
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}
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else if(!(theirIdentityKeyPtr = env->GetByteArrayElements(aTheirIdentityKeyBuffer, 0)))
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{
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LOGE("## initInboundSessionFromIdKeyJni(): failure - theirIdentityKey JNI allocation OOM");
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errorMessage = "theirIdentityKey JNI allocation OOM";
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}
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else
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{
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size_t messageLength = (size_t)env->GetArrayLength(aOneTimeKeyMsgBuffer);
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size_t theirIdentityKeyLength = (size_t)env->GetArrayLength(aTheirIdentityKeyBuffer);
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LOGD("## initInboundSessionFromIdKeyJni(): message=%.*s messageLength=%lu", static_cast<int>(messageLength), messagePtr, static_cast<long unsigned int>(messageLength));
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sessionResult = olm_create_inbound_session_from(sessionPtr, accountPtr, theirIdentityKeyPtr, theirIdentityKeyLength, (void*)messagePtr , messageLength);
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if (sessionResult == olm_error())
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{
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errorMessage = (const char *)olm_session_last_error(sessionPtr);
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LOGE("## initInboundSessionFromIdKeyJni(): failure - init inbound session creation Msg=%s", errorMessage);
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}
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else
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{
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LOGD("## initInboundSessionFromIdKeyJni(): success - result=%lu", static_cast<long unsigned int>(sessionResult));
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}
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}
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// free local alloc
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if (messagePtr)
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{
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env->ReleaseByteArrayElements(aOneTimeKeyMsgBuffer, messagePtr, JNI_ABORT);
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}
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if (theirIdentityKeyPtr)
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{
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env->ReleaseByteArrayElements(aTheirIdentityKeyBuffer, theirIdentityKeyPtr, 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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}
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/**
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* Checks if the PRE_KEY message is for this in-bound session.<br>
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* This API may be used to process a "m.room.encrypted" event when type = 1 (PRE_KEY).
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* @param aOneTimeKeyMsg PRE KEY message
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* @return true if the PRE_KEY message matches
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*/
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JNIEXPORT jboolean OLM_SESSION_FUNC_DEF(matchesInboundSessionJni)(JNIEnv *env, jobject thiz, jbyteArray aOneTimeKeyMsgBuffer)
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{
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jboolean retCode = JNI_FALSE;
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OlmSession *sessionPtr = getSessionInstanceId(env, thiz);
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jbyte *messagePtr = NULL;
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if (!sessionPtr)
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{
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LOGE("## matchesInboundSessionJni(): failure - invalid Session ptr=NULL");
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}
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else if (!aOneTimeKeyMsgBuffer)
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{
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LOGE("## matchesInboundSessionJni(): failure - invalid one time key message");
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}
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else if (!(messagePtr = env->GetByteArrayElements(aOneTimeKeyMsgBuffer, 0)))
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{
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LOGE("## matchesInboundSessionJni(): failure - one time key JNI allocation OOM");
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}
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else
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{
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size_t messageLength = (size_t)env->GetArrayLength(aOneTimeKeyMsgBuffer);
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size_t matchResult = olm_matches_inbound_session(sessionPtr, (void*)messagePtr , messageLength);
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//if(matchResult == olm_error()) {
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// for now olm_matches_inbound_session() returns 1 when it succeeds, otherwise 1- or 0
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if (matchResult != 1) {
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LOGE("## matchesInboundSessionJni(): failure - no match Msg=%s",(const char *)olm_session_last_error(sessionPtr));
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}
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else
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{
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retCode = JNI_TRUE;
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LOGD("## matchesInboundSessionJni(): success - result=%lu", static_cast<long unsigned int>(matchResult));
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}
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}
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// free local alloc
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if (messagePtr)
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{
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env->ReleaseByteArrayElements(aOneTimeKeyMsgBuffer, messagePtr, JNI_ABORT);
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}
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return retCode;
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}
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/**
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* Checks if the PRE_KEY message is for this in-bound session based on the sender identity key.<br>
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* This API may be used to process a "m.room.encrypted" event when type = 1 (PRE_KEY).
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* @param aTheirIdentityKey the identity key of the sender
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* @param aOneTimeKeyMsg PRE KEY message
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* @return true if the PRE_KEY message matches.
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*/
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JNIEXPORT jboolean JNICALL OLM_SESSION_FUNC_DEF(matchesInboundSessionFromIdKeyJni)(JNIEnv *env, jobject thiz, jbyteArray aTheirIdentityKeyBuffer, jbyteArray aOneTimeKeyMsgBuffer)
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{
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jboolean retCode = JNI_FALSE;
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OlmSession *sessionPtr = getSessionInstanceId(env, thiz);
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jbyte *messagePtr = NULL;
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jbyte *theirIdentityKeyPtr = NULL;
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if (!sessionPtr)
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{
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LOGE("## matchesInboundSessionFromIdKeyJni(): failure - invalid Session ptr=NULL");
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}
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else if (!aTheirIdentityKeyBuffer)
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{
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LOGE("## matchesInboundSessionFromIdKeyJni(): failure - invalid theirIdentityKey");
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}
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else if (!(theirIdentityKeyPtr = env->GetByteArrayElements(aTheirIdentityKeyBuffer, 0)))
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{
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LOGE("## matchesInboundSessionFromIdKeyJni(): failure - theirIdentityKey JNI allocation OOM");
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}
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else if (!aOneTimeKeyMsgBuffer)
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{
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LOGE("## matchesInboundSessionFromIdKeyJni(): failure - invalid one time key message");
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}
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else if (!(messagePtr = env->GetByteArrayElements(aOneTimeKeyMsgBuffer, 0)))
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{
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LOGE("## matchesInboundSessionFromIdKeyJni(): failure - one time key JNI allocation OOM");
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}
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else
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{
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size_t identityKeyLength = (size_t)env->GetArrayLength(aTheirIdentityKeyBuffer);
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size_t messageLength = (size_t)env->GetArrayLength(aOneTimeKeyMsgBuffer);
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size_t matchResult = olm_matches_inbound_session_from(sessionPtr, (void const *)theirIdentityKeyPtr, identityKeyLength, (void*)messagePtr , messageLength);
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//if(matchResult == olm_error()) {
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// for now olm_matches_inbound_session() returns 1 when it succeeds, otherwise 1- or 0
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if (matchResult != 1)
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{
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LOGE("## matchesInboundSessionFromIdKeyJni(): failure - no match Msg=%s",(const char *)olm_session_last_error(sessionPtr));
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}
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else
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{
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retCode = JNI_TRUE;
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LOGD("## matchesInboundSessionFromIdKeyJni(): success - result=%lu", static_cast<long unsigned int>(matchResult));
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}
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}
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// free local alloc
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if (theirIdentityKeyPtr)
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{
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env->ReleaseByteArrayElements(aTheirIdentityKeyBuffer, theirIdentityKeyPtr, JNI_ABORT);
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}
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if (messagePtr)
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{
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env->ReleaseByteArrayElements(aOneTimeKeyMsgBuffer, messagePtr, JNI_ABORT);
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}
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return retCode;
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}
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/**
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* Encrypt a message using the session.<br>
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* An exception is thrown if the operation fails.
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* @param aClearMsg clear text message
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* @param [out] aEncryptedMsg ciphered message
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* @return the encrypted message
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*/
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JNIEXPORT jbyteArray OLM_SESSION_FUNC_DEF(encryptMessageJni)(JNIEnv *env, jobject thiz, jbyteArray aClearMsgBuffer, jobject aEncryptedMsg)
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{
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jbyteArray encryptedMsgRet = 0;
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const char* errorMessage = NULL;
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OlmSession *sessionPtr = getSessionInstanceId(env, thiz);
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jbyte *clearMsgPtr = NULL;
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jboolean clearMsgIsCopied = JNI_FALSE;
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jclass encryptedMsgJClass = 0;
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jfieldID typeMsgFieldId;
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LOGD("## encryptMessageJni(): IN ");
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if (!sessionPtr)
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{
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LOGE("## encryptMessageJni(): failure - invalid Session ptr=NULL");
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errorMessage = "invalid 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");
|
|
errorMessage = "invalid clear message";
|
|
}
|
|
else if (!aEncryptedMsg)
|
|
{
|
|
LOGE("## encryptMessageJni(): failure - invalid encrypted message");
|
|
errorMessage = "invalid encrypted message";
|
|
}
|
|
else if (!(clearMsgPtr = env->GetByteArrayElements(aClearMsgBuffer, &clearMsgIsCopied)))
|
|
{
|
|
LOGE("## encryptMessageJni(): failure - clear message JNI allocation OOM");
|
|
errorMessage = "clear message JNI allocation OOM";
|
|
}
|
|
else if (!(encryptedMsgJClass = env->GetObjectClass(aEncryptedMsg)))
|
|
{
|
|
LOGE("## encryptMessageJni(): failure - unable to get crypted message class");
|
|
errorMessage = "unable to get crypted message class";
|
|
}
|
|
else if (!(typeMsgFieldId = env->GetFieldID(encryptedMsgJClass,"mType","J")))
|
|
{
|
|
LOGE("## encryptMessageJni(): failure - unable to get message type field");
|
|
errorMessage = "unable to get message type field";
|
|
}
|
|
else
|
|
{
|
|
// get message type
|
|
size_t messageType = olm_encrypt_message_type(sessionPtr);
|
|
uint8_t *randomBuffPtr = NULL;
|
|
|
|
// compute random buffer
|
|
// Note: olm_encrypt_random_length() can return 0, which means
|
|
// it just does not need new random data to encrypt a new message
|
|
size_t randomLength = olm_encrypt_random_length(sessionPtr);
|
|
|
|
LOGD("## encryptMessageJni(): randomLength=%lu", static_cast<long unsigned int>(randomLength));
|
|
|
|
if ((0 != randomLength) && !setRandomInBuffer(env, &randomBuffPtr, randomLength))
|
|
{
|
|
LOGE("## encryptMessageJni(): failure - random buffer init");
|
|
errorMessage = "random buffer init";
|
|
}
|
|
else
|
|
{
|
|
// alloc buffer for encrypted message
|
|
size_t clearMsgLength = (size_t)env->GetArrayLength(aClearMsgBuffer);
|
|
size_t encryptedMsgLength = olm_encrypt_message_length(sessionPtr, clearMsgLength);
|
|
|
|
void *encryptedMsgPtr = malloc(encryptedMsgLength*sizeof(uint8_t));
|
|
|
|
if (!encryptedMsgPtr)
|
|
{
|
|
LOGE("## encryptMessageJni(): failure - encryptedMsgPtr buffer OOM");
|
|
errorMessage = "encryptedMsgPtr buffer OOM";
|
|
}
|
|
else
|
|
{
|
|
if (0 == randomLength)
|
|
{
|
|
LOGW("## encryptMessageJni(): random buffer is not required");
|
|
}
|
|
|
|
LOGD("## encryptMessageJni(): messageType=%lu randomLength=%lu clearMsgLength=%lu encryptedMsgLength=%lu",static_cast<long unsigned int>(messageType),static_cast<long unsigned int>(randomLength), static_cast<long unsigned int>(clearMsgLength), static_cast<long unsigned int>(encryptedMsgLength));
|
|
// encrypt message
|
|
size_t result = olm_encrypt(sessionPtr,
|
|
(void const *)clearMsgPtr,
|
|
clearMsgLength,
|
|
randomBuffPtr,
|
|
randomLength,
|
|
encryptedMsgPtr,
|
|
encryptedMsgLength);
|
|
if (result == olm_error())
|
|
{
|
|
errorMessage = (const char *)olm_session_last_error(sessionPtr);
|
|
LOGE("## encryptMessageJni(): failure - Msg=%s", errorMessage);
|
|
}
|
|
else
|
|
{
|
|
// update message type: PRE KEY or normal
|
|
env->SetLongField(aEncryptedMsg, typeMsgFieldId, (jlong)messageType);
|
|
|
|
encryptedMsgRet = env->NewByteArray(encryptedMsgLength);
|
|
env->SetByteArrayRegion(encryptedMsgRet, 0 , encryptedMsgLength, (jbyte*)encryptedMsgPtr);
|
|
|
|
LOGD("## encryptMessageJni(): success - result=%lu Type=%lu encryptedMsg=%.*s", static_cast<long unsigned int>(result), static_cast<unsigned long int>(messageType), static_cast<int>(result), (const char*)encryptedMsgPtr);
|
|
}
|
|
|
|
free(encryptedMsgPtr);
|
|
}
|
|
|
|
memset(randomBuffPtr, 0, randomLength);
|
|
free(randomBuffPtr);
|
|
}
|
|
}
|
|
|
|
// free alloc
|
|
if (clearMsgPtr)
|
|
{
|
|
if (clearMsgIsCopied)
|
|
{
|
|
memset(clearMsgPtr, 0, (size_t)env->GetArrayLength(aClearMsgBuffer));
|
|
}
|
|
env->ReleaseByteArrayElements(aClearMsgBuffer, clearMsgPtr, JNI_ABORT);
|
|
}
|
|
|
|
if (errorMessage)
|
|
{
|
|
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
|
|
}
|
|
|
|
return encryptedMsgRet;
|
|
}
|
|
|
|
/**
|
|
* Decrypt a message using the session.<br>
|
|
* An exception is thrown if the operation fails.
|
|
* @param aEncryptedMsg message to decrypt
|
|
* @return decrypted message if operation succeed
|
|
*/
|
|
JNIEXPORT jbyteArray OLM_SESSION_FUNC_DEF(decryptMessageJni)(JNIEnv *env, jobject thiz, jobject aEncryptedMsg)
|
|
{
|
|
const char* errorMessage = NULL;
|
|
|
|
jbyteArray decryptedMsgRet = 0;
|
|
|
|
jclass encryptedMsgJClass = 0;
|
|
jstring encryptedMsgJstring = 0; // <= obtained from encryptedMsgFieldId
|
|
// field IDs
|
|
jfieldID encryptedMsgFieldId;
|
|
jfieldID typeMsgFieldId;
|
|
// ptrs
|
|
OlmSession *sessionPtr = getSessionInstanceId(env, thiz);
|
|
const char *encryptedMsgPtr = NULL; // <= obtained from encryptedMsgJstring
|
|
uint8_t *plainTextMsgPtr = NULL;
|
|
char *tempEncryptedPtr = NULL;
|
|
|
|
LOGD("## decryptMessageJni(): IN - OlmSession");
|
|
|
|
if (!sessionPtr)
|
|
{
|
|
LOGE("## decryptMessageJni(): failure - invalid Session ptr=NULL");
|
|
errorMessage = "invalid Session ptr=NULL";
|
|
}
|
|
else if (!aEncryptedMsg)
|
|
{
|
|
LOGE("## decryptMessageJni(): failure - invalid encrypted message");
|
|
errorMessage = "invalid encrypted message";
|
|
}
|
|
else if (!(encryptedMsgJClass = env->GetObjectClass(aEncryptedMsg)))
|
|
{
|
|
LOGE("## decryptMessageJni(): failure - unable to get encrypted message class");
|
|
errorMessage = "unable to get encrypted message class";
|
|
}
|
|
else if (!(encryptedMsgFieldId = env->GetFieldID(encryptedMsgJClass,"mCipherText","Ljava/lang/String;")))
|
|
{
|
|
LOGE("## decryptMessageJni(): failure - unable to get message field");
|
|
errorMessage = "unable to get message field";
|
|
}
|
|
else if (!(typeMsgFieldId = env->GetFieldID(encryptedMsgJClass,"mType","J")))
|
|
{
|
|
LOGE("## decryptMessageJni(): failure - unable to get message type field");
|
|
errorMessage = "unable to get message type field";
|
|
}
|
|
else if (!(encryptedMsgJstring = (jstring)env->GetObjectField(aEncryptedMsg, encryptedMsgFieldId)))
|
|
{
|
|
LOGE("## decryptMessageJni(): failure - JNI encrypted object ");
|
|
errorMessage = "JNI encrypted object";
|
|
}
|
|
else if (!(encryptedMsgPtr = env->GetStringUTFChars(encryptedMsgJstring, 0)))
|
|
{
|
|
LOGE("## decryptMessageJni(): failure - encrypted message JNI allocation OOM");
|
|
errorMessage = "encrypted message JNI allocation OOM";
|
|
}
|
|
else
|
|
{
|
|
// get message type
|
|
size_t encryptedMsgType = (size_t)env->GetLongField(aEncryptedMsg, typeMsgFieldId);
|
|
// get encrypted message length
|
|
size_t encryptedMsgLength = (size_t)env->GetStringUTFLength(encryptedMsgJstring);
|
|
|
|
// create a dedicated temp buffer to be used in next Olm API calls
|
|
tempEncryptedPtr = static_cast<char*>(malloc(encryptedMsgLength*sizeof(uint8_t)));
|
|
memcpy(tempEncryptedPtr, encryptedMsgPtr, encryptedMsgLength);
|
|
LOGD("## decryptMessageJni(): MsgType=%lu encryptedMsgLength=%lu encryptedMsg=%.*s",static_cast<long unsigned int>(encryptedMsgType),static_cast<long unsigned int>(encryptedMsgLength), static_cast<int>(encryptedMsgLength), encryptedMsgPtr);
|
|
|
|
// get max plaintext length
|
|
size_t maxPlainTextLength = olm_decrypt_max_plaintext_length(sessionPtr,
|
|
static_cast<size_t>(encryptedMsgType),
|
|
static_cast<void*>(tempEncryptedPtr),
|
|
encryptedMsgLength);
|
|
// Note: tempEncryptedPtr is destroyed by olm_decrypt_max_plaintext_length()
|
|
|
|
if (maxPlainTextLength == olm_error())
|
|
{
|
|
errorMessage = (const char *)olm_session_last_error(sessionPtr);
|
|
LOGE("## decryptMessageJni(): failure - olm_decrypt_max_plaintext_length Msg=%s", errorMessage);
|
|
}
|
|
else
|
|
{
|
|
LOGD("## decryptMessageJni(): maxPlaintextLength=%lu",static_cast<long unsigned int>(maxPlainTextLength));
|
|
|
|
// allocate output decrypted message
|
|
plainTextMsgPtr = static_cast<uint8_t*>(malloc(maxPlainTextLength*sizeof(uint8_t)));
|
|
|
|
// decrypt, but before reload encrypted buffer (previous one was destroyed)
|
|
memcpy(tempEncryptedPtr, encryptedMsgPtr, encryptedMsgLength);
|
|
size_t plaintextLength = olm_decrypt(sessionPtr,
|
|
encryptedMsgType,
|
|
(void*)tempEncryptedPtr,
|
|
encryptedMsgLength,
|
|
plainTextMsgPtr,
|
|
maxPlainTextLength);
|
|
if (plaintextLength == olm_error())
|
|
{
|
|
errorMessage = (const char *)olm_session_last_error(sessionPtr);
|
|
LOGE("## decryptMessageJni(): failure - olm_decrypt Msg=%s", errorMessage);
|
|
}
|
|
else
|
|
{
|
|
decryptedMsgRet = env->NewByteArray(plaintextLength);
|
|
env->SetByteArrayRegion(decryptedMsgRet, 0 , plaintextLength, (jbyte*)plainTextMsgPtr);
|
|
|
|
LOGD(" ## decryptMessageJni(): UTF-8 Conversion - decrypted returnedLg=%lu OK",static_cast<long unsigned int>(plaintextLength));
|
|
}
|
|
|
|
memset(plainTextMsgPtr, 0, maxPlainTextLength);
|
|
}
|
|
}
|
|
|
|
// free alloc
|
|
if (encryptedMsgPtr)
|
|
{
|
|
env->ReleaseStringUTFChars(encryptedMsgJstring, encryptedMsgPtr);
|
|
}
|
|
|
|
if (tempEncryptedPtr)
|
|
{
|
|
free(tempEncryptedPtr);
|
|
}
|
|
|
|
if (plainTextMsgPtr)
|
|
{
|
|
free(plainTextMsgPtr);
|
|
}
|
|
|
|
if (errorMessage)
|
|
{
|
|
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
|
|
}
|
|
|
|
return decryptedMsgRet;
|
|
}
|
|
|
|
/**
|
|
* Get the session identifier for this session.
|
|
* An exception is thrown if the operation fails.
|
|
* @return the session identifier
|
|
*/
|
|
JNIEXPORT jbyteArray OLM_SESSION_FUNC_DEF(getSessionIdentifierJni)(JNIEnv *env, jobject thiz)
|
|
{
|
|
const char* errorMessage = NULL;
|
|
jbyteArray returnValue = 0;
|
|
|
|
LOGD("## getSessionIdentifierJni(): IN ");
|
|
|
|
OlmSession *sessionPtr = getSessionInstanceId(env, thiz);
|
|
|
|
if (!sessionPtr)
|
|
{
|
|
LOGE("## getSessionIdentifierJni(): failure - invalid Session ptr=NULL");
|
|
errorMessage = "invalid Session ptr=NULL";
|
|
}
|
|
else
|
|
{
|
|
// get the size to alloc to contain the id
|
|
size_t lengthSessionId = olm_session_id_length(sessionPtr);
|
|
LOGD("## getSessionIdentifierJni(): lengthSessionId=%lu",static_cast<long unsigned int>(lengthSessionId));
|
|
|
|
void *sessionIdPtr = malloc(lengthSessionId*sizeof(uint8_t));
|
|
|
|
if (!sessionIdPtr)
|
|
{
|
|
LOGE("## getSessionIdentifierJni(): failure - identifier allocation OOM");
|
|
errorMessage = "identifier allocation OOM";
|
|
}
|
|
else
|
|
{
|
|
size_t result = olm_session_id(sessionPtr, sessionIdPtr, lengthSessionId);
|
|
|
|
if (result == olm_error())
|
|
{
|
|
errorMessage = (const char *)olm_session_last_error(sessionPtr);
|
|
LOGE("## getSessionIdentifierJni(): failure - get session identifier failure Msg=%s", errorMessage);
|
|
}
|
|
else
|
|
{
|
|
LOGD("## getSessionIdentifierJni(): success - result=%lu sessionId=%.*s",static_cast<long unsigned int>(result), static_cast<int>(result), (char*)sessionIdPtr);
|
|
|
|
returnValue = env->NewByteArray(result);
|
|
env->SetByteArrayRegion(returnValue, 0 , result, (jbyte*)sessionIdPtr);
|
|
}
|
|
|
|
free(sessionIdPtr);
|
|
}
|
|
}
|
|
|
|
if (errorMessage)
|
|
{
|
|
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
|
|
}
|
|
|
|
return returnValue;
|
|
}
|
|
|
|
/**
|
|
* Serialize and encrypt session instance.<br>
|
|
* An exception is thrown if the operation fails.
|
|
* @param aKeyBuffer key used to encrypt the serialized account data
|
|
* @return the serialised account as bytes buffer.
|
|
**/
|
|
JNIEXPORT jbyteArray OLM_SESSION_FUNC_DEF(serializeJni)(JNIEnv *env, jobject thiz, jbyteArray aKeyBuffer)
|
|
{
|
|
const char* errorMessage = NULL;
|
|
jbyteArray returnValue = 0;
|
|
|
|
jbyte* keyPtr = NULL;
|
|
OlmSession* sessionPtr = getSessionInstanceId(env, thiz);
|
|
|
|
LOGD("## serializeJni(): IN");
|
|
|
|
if (!sessionPtr)
|
|
{
|
|
LOGE(" ## serializeJni(): failure - invalid session ptr");
|
|
errorMessage = "invalid session ptr";
|
|
}
|
|
else if (!aKeyBuffer)
|
|
{
|
|
LOGE(" ## serializeJni(): failure - invalid key");
|
|
errorMessage = "invalid key";
|
|
}
|
|
else if (!(keyPtr = env->GetByteArrayElements(aKeyBuffer, 0)))
|
|
{
|
|
LOGE(" ## serializeJni(): failure - keyPtr JNI allocation OOM");
|
|
errorMessage = "ikeyPtr JNI allocation OOM";
|
|
}
|
|
else
|
|
{
|
|
size_t pickledLength = olm_pickle_session_length(sessionPtr);
|
|
size_t keyLength = (size_t)env->GetArrayLength(aKeyBuffer);
|
|
LOGD(" ## serializeJni(): pickledLength=%lu keyLength=%lu",static_cast<long unsigned int>(pickledLength), static_cast<long unsigned int>(keyLength));
|
|
|
|
void *pickledPtr = malloc(pickledLength*sizeof(uint8_t));
|
|
|
|
if (!pickledPtr)
|
|
{
|
|
LOGE(" ## serializeJni(): failure - pickledPtr buffer OOM");
|
|
errorMessage = "pickledPtr buffer OOM";
|
|
}
|
|
else
|
|
{
|
|
size_t result = olm_pickle_session(sessionPtr,
|
|
(void const *)keyPtr,
|
|
keyLength,
|
|
(void*)pickledPtr,
|
|
pickledLength);
|
|
if (result == olm_error())
|
|
{
|
|
errorMessage = olm_session_last_error(sessionPtr);
|
|
LOGE(" ## serializeJni(): failure - olm_pickle_session() Msg=%s", errorMessage);
|
|
}
|
|
else
|
|
{
|
|
LOGD(" ## serializeJni(): success - result=%lu pickled=%.*s", static_cast<long unsigned int>(result), static_cast<int>(pickledLength), static_cast<char*>(pickledPtr));
|
|
|
|
returnValue = env->NewByteArray(pickledLength);
|
|
env->SetByteArrayRegion(returnValue, 0 , pickledLength, (jbyte*)pickledPtr);
|
|
}
|
|
|
|
free(pickledPtr);
|
|
}
|
|
}
|
|
|
|
// free alloc
|
|
if (keyPtr)
|
|
{
|
|
env->ReleaseByteArrayElements(aKeyBuffer, keyPtr, JNI_ABORT);
|
|
}
|
|
|
|
if (errorMessage)
|
|
{
|
|
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
|
|
}
|
|
|
|
return returnValue;
|
|
}
|
|
|
|
/**
|
|
* Allocate a new session and initialize it with the serialisation data.<br>
|
|
* An exception is thrown if the operation fails.
|
|
* @param aSerializedData the session serialisation buffer
|
|
* @param aKey the key used to encrypt the serialized account data
|
|
* @return the deserialized session
|
|
**/
|
|
JNIEXPORT jlong OLM_SESSION_FUNC_DEF(deserializeJni)(JNIEnv *env, jobject thiz, jbyteArray aSerializedDataBuffer, jbyteArray aKeyBuffer)
|
|
{
|
|
const char* errorMessage = NULL;
|
|
OlmSession* sessionPtr = initializeSessionMemory();
|
|
jbyte* keyPtr = NULL;
|
|
jbyte* pickledPtr = NULL;
|
|
|
|
LOGD("## deserializeJni(): IN");
|
|
|
|
if (!sessionPtr)
|
|
{
|
|
LOGE(" ## deserializeJni(): failure - session failure OOM");
|
|
errorMessage = "session failure OOM";
|
|
}
|
|
else if (!aKeyBuffer)
|
|
{
|
|
LOGE(" ## deserializeJni(): failure - invalid key");
|
|
errorMessage = "invalid key";
|
|
}
|
|
else if (!aSerializedDataBuffer)
|
|
{
|
|
LOGE(" ## deserializeJni(): failure - serialized data");
|
|
errorMessage = "serialized data";
|
|
}
|
|
else if (!(keyPtr = env->GetByteArrayElements(aKeyBuffer, 0)))
|
|
{
|
|
LOGE(" ## deserializeJni(): failure - keyPtr JNI allocation OOM");
|
|
errorMessage = "keyPtr JNI allocation OOM";
|
|
}
|
|
else if (!(pickledPtr = env->GetByteArrayElements(aSerializedDataBuffer, 0)))
|
|
{
|
|
LOGE(" ## deserializeJni(): failure - pickledPtr JNI allocation OOM");
|
|
errorMessage = "pickledPtr JNI allocation OOM";
|
|
}
|
|
else
|
|
{
|
|
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_session(sessionPtr,
|
|
(void const *)keyPtr,
|
|
keyLength,
|
|
(void*)pickledPtr,
|
|
pickledLength);
|
|
if (result == olm_error())
|
|
{
|
|
errorMessage = olm_session_last_error(sessionPtr);
|
|
LOGE(" ## deserializeJni(): failure - olm_unpickle_account() Msg=%s", errorMessage);
|
|
}
|
|
else
|
|
{
|
|
LOGD(" ## initJni(): 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_session(sessionPtr);
|
|
free(sessionPtr);
|
|
}
|
|
env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
|
|
}
|
|
|
|
return (jlong)(intptr_t)sessionPtr;
|
|
}
|