78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
/*
|
|
* Copyright (c) 2017-2018 Hugh Bailey <obs.jim@gmail.com>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include "updater.hpp"
|
|
|
|
#include <util/windows/WinHandle.hpp>
|
|
#include <vector>
|
|
|
|
using namespace std;
|
|
|
|
void HashToString(const uint8_t *in, wchar_t *out)
|
|
{
|
|
const wchar_t alphabet[] = L"0123456789abcdef";
|
|
|
|
for (int i = 0; i != BLAKE2_HASH_LENGTH; ++i) {
|
|
out[2 * i] = alphabet[in[i] / 16];
|
|
out[2 * i + 1] = alphabet[in[i] % 16];
|
|
}
|
|
|
|
out[BLAKE2_HASH_LENGTH * 2] = 0;
|
|
}
|
|
|
|
void StringToHash(const wchar_t *in, BYTE *out)
|
|
{
|
|
unsigned int temp;
|
|
|
|
for (int i = 0; i < BLAKE2_HASH_LENGTH; i++) {
|
|
swscanf_s(in + i * 2, L"%02x", &temp);
|
|
out[i] = (BYTE)temp;
|
|
}
|
|
}
|
|
|
|
bool CalculateFileHash(const wchar_t *path, BYTE *hash)
|
|
{
|
|
blake2b_state blake2;
|
|
if (blake2b_init(&blake2, BLAKE2_HASH_LENGTH) != 0)
|
|
return false;
|
|
|
|
WinHandle handle = CreateFileW(path, GENERIC_READ, FILE_SHARE_READ,
|
|
nullptr, OPEN_EXISTING, 0, nullptr);
|
|
if (handle == INVALID_HANDLE_VALUE)
|
|
return false;
|
|
|
|
vector<BYTE> buf;
|
|
buf.resize(65536);
|
|
|
|
for (;;) {
|
|
DWORD read = 0;
|
|
if (!ReadFile(handle, buf.data(), (DWORD)buf.size(), &read,
|
|
nullptr))
|
|
return false;
|
|
|
|
if (!read)
|
|
break;
|
|
|
|
if (blake2b_update(&blake2, buf.data(), read) != 0)
|
|
return false;
|
|
}
|
|
|
|
if (blake2b_final(&blake2, hash, BLAKE2_HASH_LENGTH) != 0)
|
|
return false;
|
|
|
|
return true;
|
|
}
|