From ccbb9606b725b8f1d7eeccf14c358b146aeee491 Mon Sep 17 00:00:00 2001
From: ylecollen <ylecollen@amdocs.com>
Date: Tue, 10 Jan 2017 16:06:21 +0100
Subject: Move the android project from /Java/Android/OlmLibSdk

---
 .../src/main/jni/olm_inbound_group_session.cpp     | 507 +++++++++++++++++++++
 1 file changed, 507 insertions(+)
 create mode 100644 android/olm-sdk/src/main/jni/olm_inbound_group_session.cpp

(limited to 'android/olm-sdk/src/main/jni/olm_inbound_group_session.cpp')

diff --git a/android/olm-sdk/src/main/jni/olm_inbound_group_session.cpp b/android/olm-sdk/src/main/jni/olm_inbound_group_session.cpp
new file mode 100644
index 0000000..23910bb
--- /dev/null
+++ b/android/olm-sdk/src/main/jni/olm_inbound_group_session.cpp
@@ -0,0 +1,507 @@
+/*
+ * Copyright 2016 OpenMarket Ltd
+ * Copyright 2016 Vector Creations 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 = getInboundGroupSessionInstanceId(env,thiz);
+
+    LOGD("## releaseSessionJni(): InBound group session IN");
+
+    if (!sessionPtr)
+    {
+        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.
+ * @param aSessionKeyBuffer session key from an outbound session
+ * @return the initialized OlmInboundGroupSession* instance or throw an exception it fails.
+ **/
+JNIEXPORT jlong OLM_INBOUND_GROUP_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *env, jobject thiz, jbyteArray aSessionKeyBuffer)
+{
+    const char* errorMessage = NULL;
+    OlmInboundGroupSession* sessionPtr = NULL;
+    jbyte* sessionKeyPtr = NULL;
+    size_t sessionSize = olm_inbound_group_session_size();
+
+    LOGD("## createNewSessionJni(): inbound group session IN");
+
+    if (!sessionSize)
+    {
+        LOGE(" ## createNewSessionJni(): failure - inbound group session size = 0");
+        errorMessage = "inbound group session size = 0";
+    }
+    else if (!(sessionPtr = (OlmInboundGroupSession*)malloc(sessionSize)))
+    {
+        LOGE(" ## createNewSessionJni(): failure - inbound group session OOM");
+        errorMessage = "inbound group session OOM";
+    }
+    else if (!aSessionKeyBuffer)
+    {
+        LOGE(" ## createNewSessionJni(): failure - invalid aSessionKey");
+        errorMessage = "invalid aSessionKey";
+    }
+    else if (!(sessionKeyPtr = env->GetByteArrayElements(aSessionKeyBuffer, 0)))
+    {
+        LOGE(" ## createNewSessionJni(): failure - session key JNI allocation OOM");
+        errorMessage = "Session key JNI allocation OOM";
+    }
+    else
+    {
+        sessionPtr = olm_inbound_group_session(sessionPtr);
+
+        size_t sessionKeyLength = (size_t)env->GetArrayLength(aSessionKeyBuffer);
+        LOGD(" ## createNewSessionJni(): sessionKeyLength=%lu", static_cast<long unsigned int>(sessionKeyLength));
+
+        size_t sessionResult = olm_init_inbound_group_session(sessionPtr, (const uint8_t*)sessionKeyPtr, sessionKeyLength);
+
+        if (sessionResult == olm_error())
+        {
+            errorMessage = olm_inbound_group_session_last_error(sessionPtr);
+            LOGE(" ## createNewSessionJni(): failure - init inbound session creation Msg=%s", errorMessage);
+        }
+        else
+        {
+            LOGD(" ## createNewSessionJni(): success - result=%lu", static_cast<long unsigned int>(sessionResult));
+        }
+    }
+
+    if (sessionKeyPtr)
+    {
+        env->ReleaseByteArrayElements(aSessionKeyBuffer, sessionKeyPtr, JNI_ABORT);
+    }
+
+    if (errorMessage)
+    {
+        env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
+    }
+
+    if (errorMessage)
+    {
+        // release the allocated session
+        if (sessionPtr)
+        {
+            olm_clear_inbound_group_session(sessionPtr);
+            free(sessionPtr);
+        }
+
+        env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
+    }
+
+    return (jlong)(intptr_t)sessionPtr;
+}
+
+/**
+ * Get a base64-encoded identifier for this inbound group session.
+ * An exception is thrown if the operation fails.
+ * @return the base64-encoded identifier
+ */
+JNIEXPORT jbyteArray OLM_INBOUND_GROUP_SESSION_FUNC_DEF(sessionIdentifierJni)(JNIEnv *env, jobject thiz)
+{
+    const char* errorMessage = NULL;
+    OlmInboundGroupSession *sessionPtr = getInboundGroupSessionInstanceId(env, thiz);
+    jbyteArray returnValue = 0;
+
+    LOGD("## sessionIdentifierJni(): inbound group session IN");
+
+    if (!sessionPtr)
+    {
+        LOGE(" ## sessionIdentifierJni(): failure - invalid inbound group session instance");
+        errorMessage = "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));
+
+        uint8_t *sessionIdPtr = (uint8_t*)malloc(lengthSessionId*sizeof(uint8_t));
+
+        if (!sessionIdPtr)
+        {
+            LOGE(" ## sessionIdentifierJni(): failure - inbound group session identifier allocation OOM");
+            errorMessage = "inbound group session identifier allocation OOM";
+        }
+        else
+        {
+            size_t result = olm_inbound_group_session_id(sessionPtr, sessionIdPtr, lengthSessionId);
+
+            if (result == olm_error())
+            {
+                errorMessage = (const char *)olm_inbound_group_session_last_error(sessionPtr);
+                LOGE(" ## sessionIdentifierJni(): failure - get inbound group session identifier failure Msg=%s",(const char *)olm_inbound_group_session_last_error(sessionPtr));
+            }
+            else
+            {
+                LOGD(" ## sessionIdentifierJni(): success - inbound group session 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;
+}
+
+/**
+ * Decrypt a message.
+ * An exception is thrown if the operation fails.
+ * @param aEncryptedMsg the encrypted message
+ * @param aDecryptMessageResult the decryptMessage information
+ * @return the decrypted message
+ */
+JNIEXPORT jbyteArray OLM_INBOUND_GROUP_SESSION_FUNC_DEF(decryptMessageJni)(JNIEnv *env, jobject thiz, jbyteArray aEncryptedMsgBuffer, jobject aDecryptionResult)
+{
+    jbyteArray decryptedMsgBuffer = 0;
+    const char* errorMessage = NULL;
+
+    OlmInboundGroupSession *sessionPtr = getInboundGroupSessionInstanceId(env, thiz);
+    jbyte *encryptedMsgPtr = NULL;
+    jclass indexObjJClass = 0;
+    jfieldID indexMsgFieldId;
+
+    LOGD("## decryptMessageJni(): inbound group session IN");
+
+    if (!sessionPtr)
+    {
+        LOGE(" ## decryptMessageJni(): failure - invalid inbound group session ptr=NULL");
+        errorMessage = "invalid inbound group session ptr=NULL";
+    }
+    else if (!aEncryptedMsgBuffer)
+    {
+        LOGE(" ## decryptMessageJni(): failure - invalid encrypted message");
+        errorMessage = "invalid encrypted message";
+    }
+    else if (!aDecryptionResult)
+    {
+        LOGE(" ## decryptMessageJni(): failure - invalid index object");
+        errorMessage = "invalid index object";
+    }
+    else if (!(encryptedMsgPtr = env->GetByteArrayElements(aEncryptedMsgBuffer, 0)))
+    {
+        LOGE(" ## decryptMessageJni(): failure - encrypted message JNI allocation OOM");
+        errorMessage = "encrypted message JNI allocation OOM";
+    }
+    else if (!(indexObjJClass = env->GetObjectClass(aDecryptionResult)))
+    {
+        LOGE("## decryptMessageJni(): failure - unable to get index class");
+        errorMessage = "unable to get index class";
+    }
+    else if (!(indexMsgFieldId = env->GetFieldID(indexObjJClass,"mIndex","J")))
+    {
+        LOGE("## decryptMessageJni(): failure - unable to get index type field");
+        errorMessage = "unable to get index type field";
+    }
+    else
+    {
+        // get encrypted message length
+        size_t encryptedMsgLength = (size_t)env->GetArrayLength(aEncryptedMsgBuffer);
+        uint8_t *tempEncryptedPtr = static_cast<uint8_t*>(malloc(encryptedMsgLength*sizeof(uint8_t)));
+
+        // create a dedicated temp buffer to be used in next Olm API calls
+        if (!tempEncryptedPtr)
+        {
+            LOGE(" ## decryptMessageJni(): failure - tempEncryptedPtr allocation OOM");
+            errorMessage = "tempEncryptedPtr allocation OOM";
+        }
+        else
+        {
+            memcpy(tempEncryptedPtr, encryptedMsgPtr, encryptedMsgLength);
+            LOGD(" ## decryptMessageJni(): encryptedMsgLength=%lu encryptedMsg=%.*s",static_cast<long unsigned int>(encryptedMsgLength), static_cast<int>(encryptedMsgLength), encryptedMsgPtr);
+
+            // get max plaintext length
+            size_t maxPlainTextLength = olm_group_decrypt_max_plaintext_length(sessionPtr,
+                                                                               tempEncryptedPtr,
+                                                                               encryptedMsgLength);
+            if (maxPlainTextLength == olm_error())
+            {
+                errorMessage = olm_inbound_group_session_last_error(sessionPtr);
+                LOGE(" ## decryptMessageJni(): failure - olm_group_decrypt_max_plaintext_length Msg=%s", errorMessage);
+            }
+            else
+            {
+                LOGD(" ## decryptMessageJni(): maxPlaintextLength=%lu",static_cast<long unsigned int>(maxPlainTextLength));
+
+                uint32_t messageIndex = 0;
+
+                // allocate output decrypted message
+                uint8_t *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_group_decrypt(sessionPtr,
+                                                           tempEncryptedPtr,
+                                                           encryptedMsgLength,
+                                                           plainTextMsgPtr,
+                                                           maxPlainTextLength,
+                                                           &messageIndex);
+                if (plaintextLength == olm_error())
+                {
+                    errorMessage = olm_inbound_group_session_last_error(sessionPtr);
+                    LOGE(" ## decryptMessageJni(): failure - olm_group_decrypt Msg=%s", errorMessage);
+                }
+                else
+                {
+                    // update index
+                    env->SetLongField(aDecryptionResult, indexMsgFieldId, (jlong)messageIndex);
+
+                    decryptedMsgBuffer = env->NewByteArray(plaintextLength);
+                    env->SetByteArrayRegion(decryptedMsgBuffer, 0 , plaintextLength, (jbyte*)plainTextMsgPtr);
+
+                    LOGD(" ## decryptMessageJni(): UTF-8 Conversion - decrypted returnedLg=%lu OK",static_cast<long unsigned int>(plaintextLength));
+                }
+
+                if (plainTextMsgPtr)
+                {
+                    memset(plainTextMsgPtr, 0, maxPlainTextLength*sizeof(uint8_t));
+                    free(plainTextMsgPtr);
+                }
+            }
+
+            if (tempEncryptedPtr)
+            {
+                free(tempEncryptedPtr);
+            }
+        }
+    }
+
+    // free alloc
+    if (encryptedMsgPtr)
+    {
+        env->ReleaseByteArrayElements(aEncryptedMsgBuffer, encryptedMsgPtr, JNI_ABORT);
+    }
+
+    if (errorMessage)
+    {
+        env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
+    }
+
+    return decryptedMsgBuffer;
+}
+
+
+/**
+ * Serialize and encrypt session instance into a base64 string.<br>
+ * An exception is thrown if the operation fails.
+ * @param aKeyBuffer key used to encrypt the serialized session data
+ * @return a base64 string if operation succeed, null otherwise
+ **/
+JNIEXPORT jbyteArray OLM_INBOUND_GROUP_SESSION_FUNC_DEF(serializeJni)(JNIEnv *env, jobject thiz, jbyteArray aKeyBuffer)
+{
+    const char* errorMessage = NULL;
+
+    jbyteArray pickledDataRet = 0;
+    jbyte* keyPtr = NULL;
+    OlmInboundGroupSession* sessionPtr = getInboundGroupSessionInstanceId(env, thiz);
+
+    LOGD("## inbound group session 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 = "keyPtr JNI allocation OOM";
+    }
+    else
+    {
+        size_t pickledLength = olm_pickle_inbound_group_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_inbound_group_session(sessionPtr,
+                                                             (void const *)keyPtr,
+                                                              keyLength,
+                                                              (void*)pickledPtr,
+                                                              pickledLength);
+            if (result == olm_error())
+            {
+                errorMessage = olm_inbound_group_session_last_error(sessionPtr);
+                LOGE(" ## serializeJni(): failure - olm_pickle_outbound_group_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));
+
+                pickledDataRet = env->NewByteArray(pickledLength);
+                env->SetByteArrayRegion(pickledDataRet, 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 pickledDataRet;
+}
+
+/**
+ * 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_INBOUND_GROUP_SESSION_FUNC_DEF(deserializeJni)(JNIEnv *env, jobject thiz, jbyteArray aSerializedDataBuffer, jbyteArray aKeyBuffer)
+{
+    const char* errorMessage = NULL;
+
+    OlmInboundGroupSession* sessionPtr = NULL;
+    size_t sessionSize = olm_inbound_group_session_size();
+    jbyte* keyPtr = NULL;
+    jbyte* pickledPtr = NULL;
+
+    LOGD("## deserializeJni(): IN");
+
+    if (!sessionSize)
+    {
+        LOGE(" ## deserializeJni(): failure - inbound group session size = 0");
+        errorMessage = "inbound group session size = 0";
+    }
+    else if (!(sessionPtr = (OlmInboundGroupSession*)malloc(sessionSize)))
+    {
+        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
+    {
+        sessionPtr = olm_inbound_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_inbound_group_session(sessionPtr,
+                                                           (void const *)keyPtr,
+                                                           keyLength,
+                                                           (void*)pickledPtr,
+                                                           pickledLength);
+        if (result == olm_error())
+        {
+            errorMessage = olm_inbound_group_session_last_error(sessionPtr);
+            LOGE(" ## deserializeJni(): failure - olm_unpickle_inbound_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_inbound_group_session(sessionPtr);
+            free(sessionPtr);
+        }
+        env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
+    }
+
+    return (jlong)(intptr_t)sessionPtr;
+}
-- 
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