diff options
Diffstat (limited to 'java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_inbound_group_session.cpp')
| -rw-r--r-- | java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_inbound_group_session.cpp | 455 |
1 files changed, 455 insertions, 0 deletions
diff --git a/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_inbound_group_session.cpp b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_inbound_group_session.cpp new file mode 100644 index 0000000..a78c2cf --- /dev/null +++ b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_inbound_group_session.cpp @@ -0,0 +1,455 @@ +/* + * Copyright 2016 OpenMarket Ltd + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "olm_inbound_group_session.h" + +using namespace AndroidOlmSdk; + +/** + * Release the session allocation made by initializeInboundGroupSessionMemory().<br> + * This method MUST be called when java counter part account instance is done. + * + */ +JNIEXPORT void OLM_INBOUND_GROUP_SESSION_FUNC_DEF(releaseSessionJni)(JNIEnv *env, jobject thiz) +{ + OlmInboundGroupSession* sessionPtr = NULL; + + LOGD("## releaseSessionJni(): InBound group session IN"); + + if(NULL == (sessionPtr = (OlmInboundGroupSession*)getInboundGroupSessionInstanceId(env,thiz))) + { + LOGE("## releaseSessionJni(): failure - invalid inbound group session instance"); + } + else + { + LOGD(" ## releaseSessionJni(): sessionPtr=%p",sessionPtr); +#ifdef ENABLE_JNI_LOG + size_t retCode = olm_clear_inbound_group_session(sessionPtr); + LOGD(" ## releaseSessionJni(): clear_inbound_group_session=%lu",static_cast<long unsigned int>(retCode)); +#else + olm_clear_inbound_group_session(sessionPtr); +#endif + + LOGD(" ## releaseSessionJni(): free IN"); + free(sessionPtr); + LOGD(" ## releaseSessionJni(): free OUT"); + } +} + +/** +* Initialize a new inbound group session and return it to JAVA side.<br> +* Since a C prt is returned as a jlong, special care will be taken +* to make the cast (OlmInboundGroupSession* => jlong) platform independent. +* @return the initialized OlmInboundGroupSession* instance if init succeed, NULL otherwise +**/ +JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *env, jobject thiz) +{ + OlmInboundGroupSession* sessionPtr = NULL; + size_t sessionSize = 0; + + LOGD("## createNewSessionJni(): inbound group session IN"); + sessionSize = olm_inbound_group_session_size(); + + if(0 == sessionSize) + { + LOGE(" ## createNewSessionJni(): failure - inbound group session size = 0"); + } + else if(NULL != (sessionPtr=(OlmInboundGroupSession*)malloc(sessionSize))) + { + sessionPtr = olm_inbound_group_session(sessionPtr); + LOGD(" ## createNewSessionJni(): success - inbound group session size=%lu",static_cast<long unsigned int>(sessionSize)); + } + else + { + LOGE(" ## createNewSessionJni(): failure - inbound group session OOM"); + } + + return (jlong)(intptr_t)sessionPtr; +} + +/** + * Create a new in-bound session.<br> + * @param aSessionKey session key from an outbound session + * @return ERROR_CODE_OK if operation succeed, ERROR_CODE_KO otherwise + */ +JNIEXPORT jint OLM_INBOUND_GROUP_SESSION_FUNC_DEF(initInboundGroupSessionWithSessionKeyJni)(JNIEnv *env, jobject thiz, jstring aSessionKey) +{ + jint retCode = ERROR_CODE_KO; + OlmInboundGroupSession *sessionPtr = NULL; + const uint8_t *sessionKeyPtr = NULL; + size_t sessionResult; + + LOGD("## initInboundGroupSessionWithSessionKeyJni(): inbound group session IN"); + + if(NULL == (sessionPtr = (OlmInboundGroupSession*)getInboundGroupSessionInstanceId(env,thiz))) + { + LOGE(" ## initInboundGroupSessionWithSessionKeyJni(): failure - invalid inbound group session instance"); + } + else if(0 == aSessionKey) + { + LOGE(" ## initInboundGroupSessionWithSessionKeyJni(): failure - invalid aSessionKey"); + } + else if(NULL == (sessionKeyPtr = (const uint8_t *)env->GetStringUTFChars(aSessionKey, 0))) + { + LOGE(" ## initInboundSessionFromIdKeyJni(): failure - session key JNI allocation OOM"); + } + else + { + size_t sessionKeyLength = (size_t)env->GetStringUTFLength(aSessionKey); + LOGD(" ## initInboundSessionFromIdKeyJni(): sessionKeyLength=%lu",static_cast<long unsigned int>(sessionKeyLength)); + + sessionResult = olm_init_inbound_group_session(sessionPtr, sessionKeyPtr, sessionKeyLength); + if(sessionResult == olm_error()) { + const char *errorMsgPtr = olm_inbound_group_session_last_error(sessionPtr); + LOGE(" ## initInboundSessionFromIdKeyJni(): failure - init inbound session creation Msg=%s",errorMsgPtr); + } + else + { + retCode = ERROR_CODE_OK; + LOGD(" ## initInboundSessionFromIdKeyJni(): success - result=%lu", static_cast<long unsigned int>(sessionResult)); + } + } + + // free local alloc + if(NULL!= sessionKeyPtr) + { + env->ReleaseStringUTFChars(aSessionKey, (const char*)sessionKeyPtr); + } + + return retCode; +} + + +/** +* Get a base64-encoded identifier for this inbound group session. +*/ +JNIEXPORT jstring OLM_INBOUND_GROUP_SESSION_FUNC_DEF(sessionIdentifierJni)(JNIEnv *env, jobject thiz) +{ + OlmInboundGroupSession *sessionPtr = NULL; + uint8_t *sessionIdPtr = NULL; + jstring returnValueStr=0; + + LOGD("## sessionIdentifierJni(): inbound group session IN"); + + if(NULL == (sessionPtr = (OlmInboundGroupSession*)getInboundGroupSessionInstanceId(env,thiz))) + { + LOGE(" ## sessionIdentifierJni(): failure - invalid inbound group session instance"); + } + else + { + // get the size to alloc + size_t lengthSessionId = olm_inbound_group_session_id_length(sessionPtr); + LOGD(" ## sessionIdentifierJni(): inbound group session lengthSessionId=%lu",static_cast<long unsigned int>(lengthSessionId)); + + if(NULL == (sessionIdPtr = (uint8_t*)malloc((lengthSessionId+1)*sizeof(uint8_t)))) + { + LOGE(" ## sessionIdentifierJni(): failure - inbound group session identifier allocation OOM"); + } + else + { + size_t result = olm_inbound_group_session_id(sessionPtr, sessionIdPtr, lengthSessionId); + if (result == olm_error()) + { + LOGE(" ## sessionIdentifierJni(): failure - get inbound group session identifier failure Msg=%s",(const char *)olm_inbound_group_session_last_error(sessionPtr)); + } + else + { + // update length + sessionIdPtr[result] = static_cast<char>('\0'); + LOGD(" ## sessionIdentifierJni(): success - inbound group session result=%lu sessionId=%s",static_cast<long unsigned int>(result), (char*)sessionIdPtr); + returnValueStr = env->NewStringUTF((const char*)sessionIdPtr); + } + free(sessionIdPtr); + } + } + + return returnValueStr; +} + + +JNIEXPORT jstring OLM_INBOUND_GROUP_SESSION_FUNC_DEF(decryptMessageJni)(JNIEnv *env, jobject thiz, jstring aEncryptedMsg, jboolean aIsUtf8ConversionRequired) +{ + jstring decryptedMsgRetValue = 0; + OlmInboundGroupSession *sessionPtr = NULL; + const char *encryptedMsgPtr = NULL; + uint8_t *plainTextMsgPtr = NULL; + uint8_t *tempEncryptedPtr = NULL; + + LOGD("## decryptMessageJni(): inbound group session IN"); + + if(NULL == (sessionPtr = (OlmInboundGroupSession*)getInboundGroupSessionInstanceId(env,thiz))) + { + LOGE(" ## decryptMessageJni(): failure - invalid inbound group session ptr=NULL"); + } + else if(0 == aEncryptedMsg) + { + LOGE(" ## decryptMessageJni(): failure - invalid encrypted message"); + } + else if(0 == (encryptedMsgPtr = env->GetStringUTFChars(aEncryptedMsg, 0))) + { + LOGE(" ## decryptMessageJni(): failure - encrypted message JNI allocation OOM"); + } + else + { + // get encrypted message length + size_t encryptedMsgLength = (size_t)env->GetStringUTFLength(aEncryptedMsg); + + // create a dedicated temp buffer to be used in next Olm API calls + if(NULL == (tempEncryptedPtr = static_cast<uint8_t*>(malloc(encryptedMsgLength*sizeof(uint8_t))))) + { + LOGE(" ## decryptMessageJni(): failure - tempEncryptedPtr allocation OOM"); + } + else + { + memcpy(tempEncryptedPtr, encryptedMsgPtr, encryptedMsgLength); + LOGD(" ## decryptMessageJni(): encryptedMsgLength=%lu encryptedMsg=%s",static_cast<long unsigned int>(encryptedMsgLength),encryptedMsgPtr); + + // get max plaintext length + size_t maxPlainTextLength = olm_group_decrypt_max_plaintext_length(sessionPtr, + tempEncryptedPtr, + encryptedMsgLength); + if(maxPlainTextLength == olm_error()) + { + LOGE(" ## decryptMessageJni(): failure - olm_group_decrypt_max_plaintext_length Msg=%s",(const char *)olm_inbound_group_session_last_error(sessionPtr)); + } + else + { + LOGD(" ## decryptMessageJni(): maxPlaintextLength=%lu",static_cast<long unsigned int>(maxPlainTextLength)); + + // allocate output decrypted message + plainTextMsgPtr = static_cast<uint8_t*>(malloc((maxPlainTextLength+1)*sizeof(uint8_t))); + + // decrypt, but before reload encrypted buffer (previous one was destroyed) + memcpy(tempEncryptedPtr, encryptedMsgPtr, encryptedMsgLength); + size_t plaintextLength = olm_group_decrypt(sessionPtr, + tempEncryptedPtr, + encryptedMsgLength, + plainTextMsgPtr, + maxPlainTextLength); + if(plaintextLength == olm_error()) + { + LOGE(" ## decryptMessageJni(): failure - olm_group_decrypt Msg=%s",(const char *)olm_inbound_group_session_last_error(sessionPtr)); + } + else + { + // UTF-8 conversion workaround for issue on Android versions older than Marshmallow (23) + if(aIsUtf8ConversionRequired) + { + decryptedMsgRetValue = javaCStringToUtf8(env, plainTextMsgPtr, plaintextLength); + if(0 == decryptedMsgRetValue) + { + LOGE(" ## decryptMessageJni(): UTF-8 Conversion failure - javaCStringToUtf8() returns null"); + } + else + { + LOGD(" ## decryptMessageJni(): UTF-8 Conversion - decrypted returnedLg=%lu OK",static_cast<long unsigned int>(plaintextLength)); + } + } + else + { + // update decrypted buffer size + plainTextMsgPtr[plaintextLength] = static_cast<char>('\0'); + + LOGD(" ## decryptMessageJni(): decrypted returnedLg=%lu plainTextMsgPtr=%s",static_cast<long unsigned int>(plaintextLength), (char*)plainTextMsgPtr); + decryptedMsgRetValue = env->NewStringUTF((const char*)plainTextMsgPtr); + } + } + } + } + } + + // free alloc + if(NULL != encryptedMsgPtr) + { + env->ReleaseStringUTFChars(aEncryptedMsg, encryptedMsgPtr); + } + + if(NULL != tempEncryptedPtr) + { + free(tempEncryptedPtr); + } + + if(NULL != plainTextMsgPtr) + { + free(plainTextMsgPtr); + } + + return decryptedMsgRetValue; +} + + +/** +* Serialize and encrypt session instance into a base64 string.<br> +* @param aKey key used to encrypt the serialized session data +* @param[out] aErrorMsg error message set if operation failed +* @return a base64 string if operation succeed, null otherwise +**/ +JNIEXPORT jstring OLM_INBOUND_GROUP_SESSION_FUNC_DEF(serializeDataWithKeyJni)(JNIEnv *env, jobject thiz, jstring aKey, jobject aErrorMsg) +{ + jstring pickledDataRetValue = 0; + jclass errorMsgJClass = 0; + jmethodID errorMsgMethodId = 0; + jstring errorJstring = 0; + const char *keyPtr = NULL; + void *pickledPtr = NULL; + OlmInboundGroupSession* sessionPtr = NULL; + + LOGD("## inbound group session serializeDataWithKeyJni(): IN"); + + if(NULL == (sessionPtr = (OlmInboundGroupSession*)getInboundGroupSessionInstanceId(env,thiz))) + { + LOGE(" ## serializeDataWithKeyJni(): failure - invalid session ptr"); + } + else if(0 == aKey) + { + LOGE(" ## serializeDataWithKeyJni(): failure - invalid key"); + } + else if(0 == aErrorMsg) + { + LOGE(" ## serializeDataWithKeyJni(): failure - invalid error object"); + } + else if(0 == (errorMsgJClass = env->GetObjectClass(aErrorMsg))) + { + LOGE(" ## serializeDataWithKeyJni(): failure - unable to get error class"); + } + else if(0 == (errorMsgMethodId = env->GetMethodID(errorMsgJClass, "append", "(Ljava/lang/String;)Ljava/lang/StringBuffer;"))) + { + LOGE(" ## serializeDataWithKeyJni(): failure - unable to get error method ID"); + } + else if(NULL == (keyPtr = env->GetStringUTFChars(aKey, 0))) + { + LOGE(" ## serializeDataWithKeyJni(): failure - keyPtr JNI allocation OOM"); + } + else + { + size_t pickledLength = olm_pickle_inbound_group_session_length(sessionPtr); + size_t keyLength = (size_t)env->GetStringUTFLength(aKey); + LOGD(" ## serializeDataWithKeyJni(): pickledLength=%lu keyLength=%lu", static_cast<long unsigned int>(pickledLength), static_cast<long unsigned int>(keyLength)); + LOGD(" ## serializeDataWithKeyJni(): key=%s",(char const *)keyPtr); + + if(NULL == (pickledPtr = (void*)malloc((pickledLength+1)*sizeof(uint8_t)))) + { + LOGE(" ## serializeDataWithKeyJni(): failure - pickledPtr buffer OOM"); + } + else + { + size_t result = olm_pickle_inbound_group_session(sessionPtr, + (void const *)keyPtr, + keyLength, + (void*)pickledPtr, + pickledLength); + if(result == olm_error()) + { + const char *errorMsgPtr = olm_inbound_group_session_last_error(sessionPtr); + LOGE(" ## serializeDataWithKeyJni(): failure - olm_pickle_outbound_group_session() Msg=%s",errorMsgPtr); + + if(0 != (errorJstring = env->NewStringUTF(errorMsgPtr))) + { + env->CallObjectMethod(aErrorMsg, errorMsgMethodId, errorJstring); + } + } + else + { + // build success output + (static_cast<char*>(pickledPtr))[pickledLength] = static_cast<char>('\0'); + pickledDataRetValue = env->NewStringUTF((const char*)pickledPtr); + LOGD(" ## serializeDataWithKeyJni(): success - result=%lu pickled=%s", static_cast<long unsigned int>(result), static_cast<char*>(pickledPtr)); + } + } + } + + // free alloc + if(NULL != keyPtr) + { + env->ReleaseStringUTFChars(aKey, keyPtr); + } + + if(NULL != pickledPtr) + { + free(pickledPtr); + } + + return pickledDataRetValue; +} + + +JNIEXPORT jstring OLM_INBOUND_GROUP_SESSION_FUNC_DEF(initWithSerializedDataJni)(JNIEnv *env, jobject thiz, jstring aSerializedData, jstring aKey) +{ + OlmInboundGroupSession* sessionPtr = NULL; + jstring errorMessageRetValue = 0; + const char *keyPtr = NULL; + const char *pickledPtr = NULL; + + LOGD("## initWithSerializedDataJni(): IN"); + + if(NULL == (sessionPtr = (OlmInboundGroupSession*)getInboundGroupSessionInstanceId(env,thiz))) + { + LOGE(" ## initWithSerializedDataJni(): failure - session failure OOM"); + } + else if(0 == aKey) + { + LOGE(" ## initWithSerializedDataJni(): failure - invalid key"); + } + else if(0 == aSerializedData) + { + LOGE(" ## initWithSerializedDataJni(): failure - serialized data"); + } + else if(NULL == (keyPtr = env->GetStringUTFChars(aKey, 0))) + { + LOGE(" ## initWithSerializedDataJni(): failure - keyPtr JNI allocation OOM"); + } + else if(NULL == (pickledPtr = env->GetStringUTFChars(aSerializedData, 0))) + { + LOGE(" ## initWithSerializedDataJni(): failure - pickledPtr JNI allocation OOM"); + } + else + { + size_t pickledLength = (size_t)env->GetStringUTFLength(aSerializedData); + size_t keyLength = (size_t)env->GetStringUTFLength(aKey); + LOGD(" ## initWithSerializedDataJni(): pickledLength=%lu keyLength=%lu",static_cast<long unsigned int>(pickledLength), static_cast<long unsigned int>(keyLength)); + LOGD(" ## initWithSerializedDataJni(): key=%s",(char const *)keyPtr); + LOGD(" ## initWithSerializedDataJni(): pickled=%s",(char const *)pickledPtr); + + size_t result = olm_unpickle_inbound_group_session(sessionPtr, + (void const *)keyPtr, + keyLength, + (void*)pickledPtr, + pickledLength); + if(result == olm_error()) + { + const char *errorMsgPtr = olm_inbound_group_session_last_error(sessionPtr); + LOGE(" ## initWithSerializedDataJni(): failure - olm_unpickle_inbound_group_session() Msg=%s",errorMsgPtr); + errorMessageRetValue = env->NewStringUTF(errorMsgPtr); + } + else + { + LOGD(" ## initWithSerializedDataJni(): success - result=%lu ", static_cast<long unsigned int>(result)); + } + } + + // free alloc + if(NULL != keyPtr) + { + env->ReleaseStringUTFChars(aKey, keyPtr); + } + + if(NULL != pickledPtr) + { + env->ReleaseStringUTFChars(aSerializedData, pickledPtr); + } + + return errorMessageRetValue; +} |