diff options
Diffstat (limited to 'android/olm-sdk/src/main/jni/olm_utility.cpp')
| -rw-r--r-- | android/olm-sdk/src/main/jni/olm_utility.cpp | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/android/olm-sdk/src/main/jni/olm_utility.cpp b/android/olm-sdk/src/main/jni/olm_utility.cpp new file mode 100644 index 0000000..f6fe719 --- /dev/null +++ b/android/olm-sdk/src/main/jni/olm_utility.cpp @@ -0,0 +1,228 @@ +/* + * 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_utility.h" + +using namespace AndroidOlmSdk; + +OlmUtility* initializeUtilityMemory() +{ + size_t utilitySize = olm_utility_size(); + OlmUtility* utilityPtr = (OlmUtility*)malloc(utilitySize); + + if (utilityPtr) + { + utilityPtr = olm_utility(utilityPtr); + LOGD("## initializeUtilityMemory(): success - OLM utility size=%lu",static_cast<long unsigned int>(utilitySize)); + } + else + { + LOGE("## initializeUtilityMemory(): failure - OOM"); + } + + return utilityPtr; +} + +JNIEXPORT jlong OLM_UTILITY_FUNC_DEF(createUtilityJni)(JNIEnv *env, jobject thiz) +{ + OlmUtility* utilityPtr = initializeUtilityMemory(); + + LOGD("## createUtilityJni(): IN"); + + // init account memory allocation + if (!utilityPtr) + { + LOGE(" ## createUtilityJni(): failure - init OOM"); + env->ThrowNew(env->FindClass("java/lang/Exception"), "init OOM"); + } + else + { + LOGD(" ## createUtilityJni(): success"); + } + + return (jlong)(intptr_t)utilityPtr; +} + + +JNIEXPORT void OLM_UTILITY_FUNC_DEF(releaseUtilityJni)(JNIEnv *env, jobject thiz) +{ + OlmUtility* utilityPtr = getUtilityInstanceId(env, thiz); + + LOGD("## releaseUtilityJni(): IN"); + + if (!utilityPtr) + { + LOGE("## releaseUtilityJni(): failure - utility ptr=NULL"); + } + else + { + olm_clear_utility(utilityPtr); + free(utilityPtr); + } +} + + +/** + * Verify an ed25519 signature. + * @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, jbyteArray aSignatureBuffer, jbyteArray aKeyBuffer, jbyteArray aMessageBuffer) +{ + jstring errorMessageRetValue = 0; + OlmUtility* utilityPtr = getUtilityInstanceId(env, thiz); + jbyte* signaturePtr = NULL; + jbyte* keyPtr = NULL; + jbyte* messagePtr = NULL; + + LOGD("## verifyEd25519SignatureJni(): IN"); + + if (!utilityPtr) + { + LOGE(" ## verifyEd25519SignatureJni(): failure - invalid utility ptr=NULL"); + } + else if (!aSignatureBuffer || !aKeyBuffer || !aMessageBuffer) + { + LOGE(" ## verifyEd25519SignatureJni(): failure - invalid input parameters "); + } + else if (!(signaturePtr = env->GetByteArrayElements(aSignatureBuffer, 0))) + { + LOGE(" ## verifyEd25519SignatureJni(): failure - signature JNI allocation OOM"); + } + else if (!(keyPtr = env->GetByteArrayElements(aKeyBuffer, 0))) + { + LOGE(" ## verifyEd25519SignatureJni(): failure - key JNI allocation OOM"); + } + else if (!(messagePtr = env->GetByteArrayElements(aMessageBuffer, 0))) + { + LOGE(" ## verifyEd25519SignatureJni(): failure - message JNI allocation OOM"); + } + else + { + size_t signatureLength = (size_t)env->GetArrayLength(aSignatureBuffer); + size_t keyLength = (size_t)env->GetArrayLength(aKeyBuffer); + size_t messageLength = (size_t)env->GetArrayLength(aMessageBuffer); + LOGD(" ## verifyEd25519SignatureJni(): signatureLength=%lu keyLength=%lu messageLength=%lu",static_cast<long unsigned int>(signatureLength),static_cast<long unsigned int>(keyLength),static_cast<long unsigned int>(messageLength)); + LOGD(" ## verifyEd25519SignatureJni(): key=%.*s", static_cast<int>(keyLength), keyPtr); + + 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 - olm_ed25519_verify Msg=%s",errorMsgPtr); + } + else + { + LOGD("## verifyEd25519SignatureJni(): success - result=%lu", static_cast<long unsigned int>(result)); + } + } + + // free alloc + if (signaturePtr) + { + env->ReleaseByteArrayElements(aSignatureBuffer, signaturePtr, JNI_ABORT); + } + + if (keyPtr) + { + env->ReleaseByteArrayElements(aKeyBuffer, keyPtr, JNI_ABORT); + } + + if (messagePtr) + { + env->ReleaseByteArrayElements(aMessageBuffer, messagePtr, JNI_ABORT); + } + + return errorMessageRetValue; +} + +/** + * Compute the digest (SHA 256) for the message passed in parameter.<br> + * The digest value is the function return value. + * An exception is thrown if the operation fails. + * @param aMessage the message + * @return digest of the message. + **/ +JNIEXPORT jbyteArray OLM_UTILITY_FUNC_DEF(sha256Jni)(JNIEnv *env, jobject thiz, jbyteArray aMessageToHashBuffer) +{ + jbyteArray sha256Ret = 0; + + OlmUtility* utilityPtr = getUtilityInstanceId(env, thiz); + jbyte* messagePtr = NULL; + + LOGD("## sha256Jni(): IN"); + + if (!utilityPtr) + { + LOGE(" ## sha256Jni(): failure - invalid utility ptr=NULL"); + } + else if(!aMessageToHashBuffer) + { + LOGE(" ## sha256Jni(): failure - invalid message parameters "); + } + else if(!(messagePtr = env->GetByteArrayElements(aMessageToHashBuffer, 0))) + { + LOGE(" ## sha256Jni(): failure - message JNI allocation OOM"); + } + else + { + // get lengths + size_t messageLength = (size_t)env->GetArrayLength(aMessageToHashBuffer); + size_t hashLength = olm_sha256_length(utilityPtr); + void* hashValuePtr = malloc((hashLength)*sizeof(uint8_t)); + + if (!hashValuePtr) + { + 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()) + { + LOGE("## sha256Jni(): failure - hash creation Msg=%s",(const char *)olm_utility_last_error(utilityPtr)); + } + else + { + LOGD("## sha256Jni(): success - result=%lu hashValue=%.*s",static_cast<long unsigned int>(result), static_cast<int>(result), (char*)hashValuePtr); + sha256Ret = env->NewByteArray(result); + env->SetByteArrayRegion(sha256Ret, 0 , result, (jbyte*)hashValuePtr); + } + + free(hashValuePtr); + } + } + + if (messagePtr) + { + env->ReleaseByteArrayElements(aMessageToHashBuffer, messagePtr, JNI_ABORT); + } + + return sha256Ret; +}
\ No newline at end of file |