Move the android project from /Java/Android/OlmLibSdk

1 files changed, 214 insertions, 0 deletions

diff --git a/android/olm-sdk/src/main/jni/olm_jni_helper.cpp b/android/olm-sdk/src/main/jni/olm_jni_helper.cpp
new file mode 100644
index 0000000..a1f5c59
--- /dev/null
+++ b/android/olm-sdk/src/main/jni/olm_jni_helper.cpp
@@ -0,0 +1,214 @@
+/*
+ * 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_jni_helper.h"
+#include "olm/olm.h"
+#include <sys/time.h>
+
+using namespace AndroidOlmSdk;
+
+/**
+* Init a buffer with a given number of random values.
+* @param aBuffer2Ptr the buffer to be initialized
+* @param aRandomSize the number of random values to apply
+* @return true if operation succeed, false otherwise
+**/
+bool setRandomInBuffer(JNIEnv *env, uint8_t **aBuffer2Ptr, size_t aRandomSize)
+{
+    bool retCode = false;
+    int bufferLen = aRandomSize*sizeof(uint8_t);
+
+    if (!aBuffer2Ptr)
+    {
+        LOGE("## setRandomInBuffer(): failure - aBuffer=NULL");
+    }
+    else if (!aRandomSize)
+    {
+        LOGE("## setRandomInBuffer(): failure - random size=0");
+    }
+    else if (!(*aBuffer2Ptr = (uint8_t*)malloc(bufferLen)))
+    {
+        LOGE("## setRandomInBuffer(): failure - alloc mem OOM");
+    }
+    else
+    {
+        LOGD("## setRandomInBuffer(): randomSize=%lu",static_cast<long unsigned int>(aRandomSize));
+
+        // use the secureRandom class
+        jclass cls = env->FindClass("java/security/SecureRandom");
+
+        if (cls)
+        {
+            jobject newObj = 0;
+            jmethodID constructor = env->GetMethodID(cls, "<init>", "()V");
+            jmethodID nextByteMethod = env->GetMethodID(cls, "nextBytes", "([B)V");
+
+            if (constructor)
+            {
+                newObj = env->NewObject(cls, constructor);
+                jbyteArray tempByteArray = env->NewByteArray(bufferLen);
+
+                if (newObj && tempByteArray)
+                {
+                    env->CallVoidMethod(newObj, nextByteMethod, tempByteArray);
+
+                    if (!env->ExceptionOccurred())
+                    {
+                        jbyte* buffer = env->GetByteArrayElements(tempByteArray, NULL);
+
+                        if (buffer)
+                        {
+                            memcpy(*aBuffer2Ptr, buffer, bufferLen);
+                            retCode = true;
+
+                            // clear tempByteArray to hide sensitive data.
+                            memset(buffer, 0, bufferLen);
+                            env->SetByteArrayRegion(tempByteArray, 0, bufferLen, buffer);
+
+                            // ensure that the buffer is released
+                            env->ReleaseByteArrayElements(tempByteArray, buffer, JNI_ABORT);
+                        }
+                    }
+                }
+
+                if (tempByteArray)
+                {
+                    env->DeleteLocalRef(tempByteArray);
+                }
+
+                if (newObj)
+                {
+                    env->DeleteLocalRef(newObj);
+                }
+            }
+        }
+
+        // debug purpose
+        /*for(int i = 0; i < aRandomSize; i++)
+        {
+            LOGD("## setRandomInBuffer(): randomBuffPtr[%ld]=%d",i, (*aBuffer2Ptr)[i]);
+        }*/
+    }
+
+    return retCode;
+}
+
+/**
+* Read the instance ID of the calling object.
+* @param aJniEnv pointer pointing on the JNI function table
+* @param aJavaObject reference to the object on which the method is invoked
+* @param aCallingClass java calling class name
+* @return the related instance ID
+**/
+jlong getInstanceId(JNIEnv* aJniEnv, jobject aJavaObject, const char *aCallingClass)
+{
+    jlong instanceId = 0;
+
+    if (aJniEnv)
+    {
+        jclass requiredClass = aJniEnv->FindClass(aCallingClass);
+        jclass loaderClass = 0;
+
+        if (requiredClass && (JNI_TRUE != aJniEnv->IsInstanceOf(aJavaObject, requiredClass)))
+        {
+            LOGE("## getInstanceId() failure - invalid instance of");
+        }
+        else if ((loaderClass = aJniEnv->GetObjectClass(aJavaObject)))
+        {
+            jfieldID instanceIdField = aJniEnv->GetFieldID(loaderClass, "mNativeId", "J");
+
+            if (instanceIdField)
+            {
+                instanceId = aJniEnv->GetLongField(aJavaObject, instanceIdField);
+                LOGD("## getInstanceId(): read from java instanceId=%lld",instanceId);
+            }
+            else
+            {
+                LOGE("## getInstanceId() ERROR! GetFieldID=null");
+            }
+
+             aJniEnv->DeleteLocalRef(loaderClass);
+        }
+        else
+        {
+            LOGE("## getInstanceId() ERROR! GetObjectClass=null");
+        }
+    }
+    else
+    {
+        LOGE("## getInstanceId() ERROR! aJniEnv=NULL");
+    }
+
+    LOGD("## getInstanceId() success - instanceId=%p (jlong)(intptr_t)instanceId=%lld",(void*)instanceId, (jlong)(intptr_t)instanceId);
+
+    return instanceId;
+}
+
+/**
+* Read the account instance ID of the calling object.
+* @param aJniEnv pointer pointing on the JNI function table
+* @param aJavaObject reference to the object on which the method is invoked
+* @return the related OlmAccount.
+**/
+struct OlmAccount* getAccountInstanceId(JNIEnv* aJniEnv, jobject aJavaObject)
+{
+    return (struct OlmAccount*)getInstanceId(aJniEnv, aJavaObject, CLASS_OLM_ACCOUNT);
+}
+
+/**
+* Read the session instance ID of the calling object (aJavaObject).<br>
+* @param aJniEnv pointer pointing on the JNI function table
+* @param aJavaObject reference to the object on which the method is invoked
+* @return the related OlmSession.
+**/
+struct OlmSession* getSessionInstanceId(JNIEnv* aJniEnv, jobject aJavaObject)
+{
+    return (struct OlmSession*)getInstanceId(aJniEnv, aJavaObject, CLASS_OLM_SESSION);
+}
+
+/**
+* Read the inbound group session instance ID of the calling object (aJavaObject).<br>
+* @param aJniEnv pointer pointing on the JNI function table
+* @param aJavaObject reference to the object on which the method is invoked
+* @return the related OlmInboundGroupSession.
+**/
+struct OlmInboundGroupSession* getInboundGroupSessionInstanceId(JNIEnv* aJniEnv, jobject aJavaObject)
+{
+    return (struct OlmInboundGroupSession*)getInstanceId(aJniEnv, aJavaObject, CLASS_OLM_INBOUND_GROUP_SESSION);
+}
+
+/**
+* Read the outbound group session instance ID of the calling object (aJavaObject).<br>
+* @param aJniEnv pointer pointing on the JNI function table
+* @param aJavaObject reference to the object on which the method is invoked
+* @return the related OlmOutboundGroupSession
+**/
+struct OlmOutboundGroupSession* getOutboundGroupSessionInstanceId(JNIEnv* aJniEnv, jobject aJavaObject)
+{
+    return (struct OlmOutboundGroupSession*)getInstanceId(aJniEnv, aJavaObject, CLASS_OLM_OUTBOUND_GROUP_SESSION);
+}
+
+/**
+* Read the utility instance ID of the calling object (aJavaObject).<br>
+* @param aJniEnv pointer pointing on the JNI function table
+* @param aJavaObject reference to the object on which the method is invoked
+* @return the related OlmUtility
+**/
+struct OlmUtility* getUtilityInstanceId(JNIEnv* aJniEnv, jobject aJavaObject)
+{
+    return (struct OlmUtility*)getInstanceId(aJniEnv, aJavaObject, CLASS_OLM_UTILITY);
+}