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/*
* 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_utility.h"
using namespace AndroidOlmSdk;
OlmUtility* initializeUtilityMemory()
{
OlmUtility* utilityPtr = NULL;
size_t utilitySize = olm_utility_size();
if(NULL != (utilityPtr=(OlmUtility*)malloc(utilitySize)))
{
utilityPtr = olm_utility(utilityPtr);
LOGD("## initializeUtilityMemory(): success - OLM utility size=%lu",utilitySize);
}
else
{
LOGE("## initializeUtilityMemory(): failure - OOM");
}
return utilityPtr;
}
JNIEXPORT jlong OLM_UTILITY_FUNC_DEF(initUtilityJni)(JNIEnv *env, jobject thiz)
{
OlmUtility* utilityPtr = NULL;
LOGD("## initUtilityJni(): IN");
// init account memory allocation
if(NULL == (utilityPtr = initializeUtilityMemory()))
{
LOGE(" ## initUtilityJni(): failure - init OOM");
}
else
{
LOGD(" ## initUtilityJni(): success");
}
return (jlong)(intptr_t)utilityPtr;
}
JNIEXPORT void OLM_UTILITY_FUNC_DEF(releaseUtilityJni)(JNIEnv *env, jobject thiz)
{
OlmUtility* utilityPtr = NULL;
if(NULL == (utilityPtr = (OlmUtility*)getUtilityInstanceId(env,thiz)))
{
LOGE("## releaseUtilityJni(): failure - utility ptr=NULL");
}
else
{
olm_clear_utility(utilityPtr);
free(utilityPtr);
}
}
/**
* Verify an ed25519 signature.
* If the key was too small then the message will be "OLM.INVALID_BASE64".
* If the signature was invalid then the message will be "OLM.BAD_MESSAGE_MAC".
*
* @param aSignature the base64-encoded message signature to be checked.
* @param aKey the ed25519 key (fingerprint key)
* @param aMessage the message which was signed
* @return 0 if validation succeed, an error message string if operation failed
*/
JNIEXPORT jstring OLM_UTILITY_FUNC_DEF(verifyEd25519SignatureJni)(JNIEnv *env, jobject thiz, jstring aSignature, jstring aKey, jstring aMessage)
{
jstring errorMessageRetValue = 0;
OlmUtility* utilityPtr = NULL;
const char* signaturePtr = NULL;
const char* keyPtr = NULL;
const char* messagePtr = NULL;
LOGD("## verifyEd25519SignatureJni(): IN");
if(NULL == (utilityPtr = (OlmUtility*)getUtilityInstanceId(env,thiz)))
{
LOGE(" ## verifyEd25519SignatureJni(): failure - invalid utility ptr=NULL");
}
else if((0 == aSignature) || (0 == aKey) || (0 == aMessage))
{
LOGE(" ## verifyEd25519SignatureJni(): failure - invalid input parameters ");
}
else if(0 == (signaturePtr = env->GetStringUTFChars(aSignature, 0)))
{
LOGE(" ## verifyEd25519SignatureJni(): failure - signature JNI allocation OOM");
}
else if(0 == (keyPtr = env->GetStringUTFChars(aKey, 0)))
{
LOGE(" ## verifyEd25519SignatureJni(): failure - key JNI allocation OOM");
}
else if(0 == (messagePtr = env->GetStringUTFChars(aMessage, 0)))
{
LOGE(" ## verifyEd25519SignatureJni(): failure - message JNI allocation OOM");
}
else
{
size_t signatureLength = (size_t)env->GetStringUTFLength(aSignature);
size_t keyLength = (size_t)env->GetStringUTFLength(aKey);
size_t messageLength = (size_t)env->GetStringUTFLength(aMessage);
LOGD(" ## verifyEd25519SignatureJni(): signatureLength=%lu keyLength=%lu messageLength=%lu",signatureLength,keyLength,messageLength);
size_t result = olm_ed25519_verify(utilityPtr,
(void const *)keyPtr,
keyLength,
(void const *)messagePtr,
messageLength,
(void*)signaturePtr,
signatureLength);
if(result == olm_error()) {
const char *errorMsgPtr = olm_utility_last_error(utilityPtr);
errorMessageRetValue = env->NewStringUTF(errorMsgPtr);
LOGE("## verifyEd25519SignatureJni(): failure - session creation Msg=%s",errorMsgPtr);
}
else
{
LOGD("## verifyEd25519SignatureJni(): success - result=%ld", result);
}
}
// free alloc
if(NULL != signaturePtr)
{
env->ReleaseStringUTFChars(aSignature, signaturePtr);
}
if(NULL != keyPtr)
{
env->ReleaseStringUTFChars(aKey, keyPtr);
}
if(NULL != messagePtr)
{
env->ReleaseStringUTFChars(aMessage, messagePtr);
}
return errorMessageRetValue;
}
/**
* Compute the digest (SHA 256) for the message passed in parameter.<br>
* The digest value is the function return value.
* @param aMessage
* @return digest of the message if operation succeed, null otherwise
**/
JNIEXPORT jstring OLM_UTILITY_FUNC_DEF(sha256Jni)(JNIEnv *env, jobject thiz, jstring aMessageToHash)
{
jstring sha256RetValue = 0;
OlmUtility* utilityPtr = NULL;
const char* messagePtr = NULL;
void *hashValuePtr = NULL;
LOGD("## sha256Jni(): IN");
if(NULL == (utilityPtr = (OlmUtility*)getUtilityInstanceId(env,thiz)))
{
LOGE(" ## sha256Jni(): failure - invalid utility ptr=NULL");
}
else if(0 == aMessageToHash)
{
LOGE(" ## sha256Jni(): failure - invalid message parameters ");
}
else if(0 == (messagePtr = env->GetStringUTFChars(aMessageToHash, 0)))
{
LOGE(" ## sha256Jni(): failure - message JNI allocation OOM");
}
else
{
// get lengths
size_t messageLength = (size_t)env->GetStringUTFLength(aMessageToHash);
size_t hashLength = olm_sha256_length(utilityPtr);
if(NULL == (hashValuePtr = static_cast<void*>(malloc((hashLength+1)*sizeof(uint8_t)))))
{
LOGE("## sha256Jni(): failure - hash value allocation OOM");
}
else
{
size_t result = olm_sha256(utilityPtr,
(void const *)messagePtr,
messageLength,
(void *)hashValuePtr,
hashLength);
if(result == olm_error())
{
const char *errorMsgPtr = olm_utility_last_error(utilityPtr);
LOGE("## sha256Jni(): failure - hash creation Msg=%s",errorMsgPtr);
}
else
{
// update length
(static_cast<char*>(hashValuePtr))[result] = static_cast<char>('\0');
LOGD("## sha256Jni(): success - result=%lu hashValue=%s",result, (char*)hashValuePtr);
sha256RetValue = env->NewStringUTF((const char*)hashValuePtr);
}
}
}
if(NULL != hashValuePtr)
{
free(hashValuePtr);
}
if(NULL != messagePtr)
{
env->ReleaseStringUTFChars(aMessageToHash, messagePtr);
}
return sha256RetValue;
}
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