mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-15 00:16:48 +00:00
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "updater_files.hpp"
|
|
|
|
namespace ams::updater {
|
|
|
|
Result ReadFile(size_t *out_size, void *dst, size_t dst_size, const char *path) {
|
|
/* Open the file. */
|
|
fs::FileHandle file;
|
|
R_TRY_CATCH(fs::OpenFile(std::addressof(file), path, fs::OpenMode_Read)) {
|
|
R_CONVERT(fs::ResultPathNotFound, updater::ResultInvalidBootImagePackage())
|
|
} R_END_TRY_CATCH;
|
|
ON_SCOPE_EXIT { fs::CloseFile(file); };
|
|
|
|
std::memset(dst, 0, dst_size);
|
|
return fs::ReadFile(out_size, file, 0, dst, dst_size, fs::ReadOption());
|
|
}
|
|
|
|
Result GetFileHash(size_t *out_size, void *dst_hash, const char *path, void *work_buffer, size_t work_buffer_size) {
|
|
/* Open the file. */
|
|
fs::FileHandle file;
|
|
R_TRY_CATCH(fs::OpenFile(std::addressof(file), path, fs::OpenMode_Read)) {
|
|
R_CONVERT(fs::ResultPathNotFound, updater::ResultInvalidBootImagePackage())
|
|
} R_END_TRY_CATCH;
|
|
ON_SCOPE_EXIT { fs::CloseFile(file); };
|
|
|
|
/* Read in chunks, hashing as we go. */
|
|
crypto::Sha256Generator generator;
|
|
generator.Initialize();
|
|
|
|
size_t total_size = 0;
|
|
while (true) {
|
|
size_t size;
|
|
R_TRY(fs::ReadFile(std::addressof(size), file, total_size, work_buffer, work_buffer_size, fs::ReadOption()));
|
|
|
|
generator.Update(work_buffer, size);
|
|
total_size += size;
|
|
|
|
if (size != work_buffer_size) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
generator.GetHash(dst_hash, crypto::Sha256Generator::HashSize);
|
|
*out_size = total_size;
|
|
return ResultSuccess();
|
|
}
|
|
|
|
}
|