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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* 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.
*/
/**
* @header parcCryptoHash.c
* <#Abstract#>
*
* <#Discussion#>
*
*
* Example:
* @code
* <#example#>
* @endcode
*/
#include <config.h>
#include <stdio.h>
#include <LongBow/runtime.h>
#include <parc/security/parc_CryptoHash.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Object.h>
struct parc_crypto_hash {
PARCCryptoHashType type;
PARCBuffer *digestBuffer;
};
static bool
_parcCryptoHash_FinalRelease(PARCCryptoHash **hashP)
{
PARCCryptoHash *hash = (PARCCryptoHash *) *hashP;
if (hash->digestBuffer != NULL) {
parcBuffer_Release(&hash->digestBuffer);
}
return true;
}
parcObject_Override(PARCCryptoHash, PARCObject,
.destructor = (PARCObjectDestructor *) _parcCryptoHash_FinalRelease,
.equals = (PARCObjectEquals *) parcCryptoHash_Equals);
parcObject_ImplementAcquire(parcCryptoHash, PARCCryptoHash);
parcObject_ImplementRelease(parcCryptoHash, PARCCryptoHash);
PARCCryptoHash *
parcCryptoHash_Create(PARCCryptoHashType digestType, const PARCBuffer *digestBuffer)
{
PARCCryptoHash *parcDigest = parcObject_CreateInstance(PARCCryptoHash);
assertNotNull(parcDigest, "parcMemory_AllocateAndClear(%zu) returned NULL", sizeof(PARCCryptoHash));
parcDigest->type = digestType;
parcDigest->digestBuffer = parcBuffer_Acquire((PARCBuffer *) digestBuffer); // casting to un-const
return parcDigest;
}
/**
* Create a digest, copying the buffer
*
* Example:
* @code
* <#example#>
* @endcode
*/
PARCCryptoHash *
parcCryptoHash_CreateFromArray(PARCCryptoHashType digestType, const void *buffer, size_t length)
{
PARCCryptoHash *parcDigest = parcObject_CreateInstance(PARCCryptoHash);
assertNotNull(parcDigest, "parcMemory_AllocateAndClear(%zu) returned NULL", sizeof(PARCCryptoHash));
parcDigest->type = digestType;
// create a reference counted copy
parcDigest->digestBuffer =
parcBuffer_Flip(parcBuffer_PutArray(parcBuffer_Allocate(length), length, buffer));
return parcDigest;
}
/**
* Returns the digest algorithm.
*
* Example:
* @code
* <#example#>
* @endcode
*/
PARCCryptoHashType
parcCryptoHash_GetDigestType(const PARCCryptoHash *parcDigest)
{
assertNotNull(parcDigest, "Parameter must be non-null");
return parcDigest->type;
}
bool
parcCryptoHash_Equals(const PARCCryptoHash *a, const PARCCryptoHash *b)
{
if (a == b) {
return true;
}
if (a == NULL || b == NULL) {
return false;
}
if (a->type == b->type) {
if (parcBuffer_Equals(a->digestBuffer, b->digestBuffer)) {
return true;
}
}
return false;
}
PARCBuffer *
parcCryptoHash_GetDigest(const PARCCryptoHash *parcDigest)
{
assertNotNull(parcDigest, "Parameter must be non-null");
return parcDigest->digestBuffer;
}
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