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Copy pathhash_stream.cpp
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110 lines (95 loc) · 3.19 KB
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/* Copyright 2017 - 2025 R. Thomas
* Copyright 2017 - 2025 Quarkslab
*
* 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 "logging.hpp"
#include "hash_stream.hpp"
#include "mbedtls/md.h"
namespace LIEF {
inline mbedtls_md_context_t* cast(std::unique_ptr<intptr_t>& in) {
return reinterpret_cast<mbedtls_md_context_t*>(in.get());
}
hashstream::hashstream(HASH type) :
ctx_{reinterpret_cast<intptr_t*>(new mbedtls_md_context_t{})}
{
int ret = 0;
mbedtls_md_init(cast(ctx_));
switch (type) {
case HASH::MD5:
{
const mbedtls_md_info_t* info = mbedtls_md_info_from_type(MBEDTLS_MD_MD5);
ret = mbedtls_md_setup(cast(ctx_), info, 0);
this->output_.resize(mbedtls_md_get_size(info));
break;
}
case HASH::SHA1:
{
const mbedtls_md_info_t* info = mbedtls_md_info_from_type(MBEDTLS_MD_SHA1);
ret = mbedtls_md_setup(cast(ctx_), info, 0);
this->output_.resize(mbedtls_md_get_size(info));
break;
}
case HASH::SHA224:
{
const mbedtls_md_info_t* info = mbedtls_md_info_from_type(MBEDTLS_MD_SHA224);
ret = mbedtls_md_setup(cast(ctx_), info, 0);
this->output_.resize(mbedtls_md_get_size(info));
break;
}
case HASH::SHA256:
{
const mbedtls_md_info_t* info = mbedtls_md_info_from_type(MBEDTLS_MD_SHA256);
ret = mbedtls_md_setup(cast(ctx_), info, 0);
this->output_.resize(mbedtls_md_get_size(info));
break;
}
case HASH::SHA384:
{
const mbedtls_md_info_t* info = mbedtls_md_info_from_type(MBEDTLS_MD_SHA384);
ret = mbedtls_md_setup(cast(ctx_), info, 0);
this->output_.resize(mbedtls_md_get_size(info));
break;
}
case HASH::SHA512:
{
const mbedtls_md_info_t* info = mbedtls_md_info_from_type(MBEDTLS_MD_SHA512);
ret = mbedtls_md_setup(cast(ctx_), info, 0);
this->output_.resize(mbedtls_md_get_size(info));
break;
}
}
mbedtls_md_starts(cast(this->ctx_));
if (ret != 0) {
LIEF_WARN("Error while setting up hash function");
}
}
hashstream& hashstream::write(const uint8_t* s, size_t n) {
int ret = mbedtls_md_update(cast(this->ctx_), s, n);
if (ret != 0) {
LIEF_WARN("mbedtls_md_update(0x{}, 0x{:x}) failed with retcode: 0x{:x}", reinterpret_cast<uintptr_t>(s), n, ret);
}
return *this;
}
hashstream& hashstream::flush() {
int ret = mbedtls_md_finish(cast(this->ctx_), this->output_.data());
if (ret != 0) {
LIEF_WARN("mbedtls_md_finish() failed with retcode: 0x{:x}", ret);
}
return *this;
}
hashstream::~hashstream() {
mbedtls_md_free(cast(ctx_));
delete reinterpret_cast<mbedtls_md_context_t*>(ctx_.release());
}
}