mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 15:16:34 +00:00
4059dc6187
Because I was working on multiple things at once, this commit also:
- Adds wrappers for/linker flags to wrap CXX exceptions to make them
abort. This saves ~0x8000 of memory in every system module.
- Broadly replaces lines of the pattern if (cond) { return ResultX; }
with R_UNLESS(!cond, ResultX());.
- Reworks the R_TRY_CATCH macros (and the result macros in general).
72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <switch.h>
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#include <stratosphere.hpp>
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#include "updater_files.hpp"
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namespace sts::updater {
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Result ReadFile(size_t *out_size, void *dst, size_t dst_size, const char *path) {
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FILE *fp = fopen(path, "rb");
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if (fp == NULL) {
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return ResultInvalidBootImagePackage();
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}
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ON_SCOPE_EXIT { fclose(fp); };
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std::memset(dst, 0, dst_size);
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size_t read_size = fread(dst, 1, dst_size, fp);
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if (ferror(fp)) {
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return fsdevGetLastResult();
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}
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*out_size = read_size;
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return ResultSuccess();
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}
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Result GetFileHash(size_t *out_size, void *dst_hash, const char *path, void *work_buffer, size_t work_buffer_size) {
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FILE *fp = fopen(path, "rb");
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if (fp == NULL) {
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return ResultInvalidBootImagePackage();
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}
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ON_SCOPE_EXIT { fclose(fp); };
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Sha256Context sha_ctx;
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sha256ContextCreate(&sha_ctx);
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size_t total_size = 0;
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while (true) {
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size_t read_size = fread(work_buffer, 1, work_buffer_size, fp);
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if (ferror(fp)) {
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return fsdevGetLastResult();
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}
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if (read_size == 0) {
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break;
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}
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sha256ContextUpdate(&sha_ctx, work_buffer, read_size);
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total_size += read_size;
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if (read_size != work_buffer_size) {
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break;
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}
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}
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sha256ContextGetHash(&sha_ctx, dst_hash);
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*out_size = total_size;
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return ResultSuccess();
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}
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}
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