Add serialization for outbound group session

5 files changed, 167 insertions, 3 deletions

diff --git a/java/android/OlmLibSdk/olm-sdk/src/main/jni/Android.mk b/java/android/OlmLibSdk/olm-sdk/src/main/jni/Android.mk
index 92a9359..7a8f20b 100644
--- a/java/android/OlmLibSdk/olm-sdk/src/main/jni/Android.mk
+++ b/java/android/OlmLibSdk/olm-sdk/src/main/jni/Android.mk
@@ -47,7 +47,8 @@ olm_account.cpp \
 olm_session.cpp \
 olm_jni_helper.cpp \
 olm_inbound_group_session.cpp \
-olm_outbound_group_session.cpp
+olm_outbound_group_session.cpp \
+olm_utility.cpp
 
 LOCAL_LDLIBS := -llog
 
diff --git a/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_account.cpp b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_account.cpp
index fd3a977..1a1b360 100644
--- a/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_account.cpp
+++ b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_account.cpp
@@ -642,7 +642,6 @@ JNIEXPORT jstring OLM_ACCOUNT_FUNC_DEF(initWithSerializedDataJni)(JNIEnv *env, j
         {
             LOGD(" ## initWithSerializedDataJni(): success - result=%lu ", result);
         }
-
     }
 
     // free alloc
diff --git a/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_outbound_group_session.cpp b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_outbound_group_session.cpp
index 55c6539..67bf8bd 100644
--- a/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_outbound_group_session.cpp
+++ b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_outbound_group_session.cpp
@@ -330,4 +330,166 @@ JNIEXPORT jstring OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(encryptMessageJni)(JNIEnv
 }
 
 
+/**
+* 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_OUTBOUND_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;
+    OlmOutboundGroupSession* sessionPtr = NULL;
+
+    LOGD("## outbound group session serializeDataWithKeyJni(): IN");
+
+    if(NULL == (sessionPtr = (OlmOutboundGroupSession*)getOutboundGroupSessionInstanceId(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_outbound_group_session_length(sessionPtr);
+        size_t keyLength = (size_t)env->GetStringUTFLength(aKey);
+        LOGD(" ## serializeDataWithKeyJni(): pickledLength=%lu keyLength=%lu",pickledLength, 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_outbound_group_session(sessionPtr,
+                                                             (void const *)keyPtr,
+                                                              keyLength,
+                                                              (void*)pickledPtr,
+                                                              pickledLength);
+            if(result == olm_error())
+            {
+                const char *errorMsgPtr = olm_outbound_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", result, static_cast<char*>(pickledPtr));
+            }
+        }
+    }
+
+    // free alloc
+    if(NULL != keyPtr)
+    {
+     env->ReleaseStringUTFChars(aKey, keyPtr);
+    }
+
+    if(NULL != pickledPtr)
+    {
+        free(pickledPtr);
+    }
+
+    return pickledDataRetValue;
+}
+
+
+JNIEXPORT jstring OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(initWithSerializedDataJni)(JNIEnv *env, jobject thiz, jstring aSerializedData, jstring aKey)
+{
+    OlmOutboundGroupSession* sessionPtr = NULL;
+    jstring errorMessageRetValue = 0;
+    const char *keyPtr = NULL;
+    const char *pickledPtr = NULL;
+
+    LOGD("## initWithSerializedDataJni(): IN");
+
+    if(NULL == (sessionPtr = (OlmOutboundGroupSession*)getOutboundGroupSessionInstanceId(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",pickledLength, keyLength);
+        LOGD(" ## initWithSerializedDataJni(): key=%s",(char const *)keyPtr);
+        LOGD(" ## initWithSerializedDataJni(): pickled=%s",(char const *)pickledPtr);
+
+        size_t result = olm_unpickle_outbound_group_session(sessionPtr,
+                                                            (void const *)keyPtr,
+                                                            keyLength,
+                                                            (void*)pickledPtr,
+                                                            pickledLength);
+        if(result == olm_error())
+        {
+            const char *errorMsgPtr = olm_outbound_group_session_last_error(sessionPtr);
+            LOGE(" ## initWithSerializedDataJni(): failure - olm_unpickle_outbound_group_session() Msg=%s",errorMsgPtr);
+            errorMessageRetValue = env->NewStringUTF(errorMsgPtr);
+        }
+        else
+        {
+            LOGD(" ## initWithSerializedDataJni(): success - result=%lu ", result);
+        }
+    }
+
+    // free alloc
+    if(NULL != keyPtr)
+    {
+        env->ReleaseStringUTFChars(aKey, keyPtr);
+    }
+
+    if(NULL != pickledPtr)
+    {
+        env->ReleaseStringUTFChars(aSerializedData, pickledPtr);
+    }
+
+    return errorMessageRetValue;
+}
 
diff --git a/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_outbound_group_session.h b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_outbound_group_session.h
index 6e264aa..22c32a7 100644
--- a/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_outbound_group_session.h
+++ b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_outbound_group_session.h
@@ -38,6 +38,9 @@ JNIEXPORT jstring OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(sessionKeyJni)(JNIEnv *env
 
 JNIEXPORT jstring OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(encryptMessageJni)(JNIEnv *env, jobject thiz, jstring aClearMsgPtr);
 
+// serialization
+JNIEXPORT jstring OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(serializeDataWithKeyJni)(JNIEnv *env, jobject thiz, jstring aKey, jobject aErrorMsg);
+JNIEXPORT jstring OLM_OUTBOUND_GROUP_SESSION_FUNC_DEF(initWithSerializedDataJni)(JNIEnv *env, jobject thiz, jstring aSerializedData, jstring aKey);
 
 #ifdef __cplusplus
 }
diff --git a/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_session.cpp b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_session.cpp
index 3422fee..9f64d2e 100644
--- a/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_session.cpp
+++ b/java/android/OlmLibSdk/olm-sdk/src/main/jni/olm_session.cpp
@@ -41,7 +41,6 @@ OlmSession* initializeSessionMemory()
     return sessionPtr;
 }
 
-
 JNIEXPORT jlong OLM_SESSION_FUNC_DEF(createNewSessionJni)(JNIEnv *env, jobject thiz)
 {
     LOGD("## createNewSessionJni(): IN");