mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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262 lines
10 KiB
C++
262 lines
10 KiB
C++
/*
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* Copyright (c) 2018-2020 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 <stratosphere.hpp>
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#include "amsmitm_initialization.hpp"
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#include "amsmitm_fs_utils.hpp"
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namespace ams::mitm::fs {
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using namespace ams::fs;
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namespace {
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/* Globals. */
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FsFileSystem g_sd_filesystem;
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/* Helpers. */
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Result EnsureSdInitialized() {
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R_UNLESS(serviceIsActive(&g_sd_filesystem.s), ams::fs::ResultSdCardNotPresent());
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return ResultSuccess();
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}
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void FormatAtmosphereRomfsPath(char *dst_path, size_t dst_path_size, ncm::ProgramId program_id, const char *src_path) {
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return FormatAtmosphereSdPath(dst_path, dst_path_size, program_id, "romfs", src_path);
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}
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}
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void OpenGlobalSdCardFileSystem() {
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R_ABORT_UNLESS(fsOpenSdCardFileSystem(&g_sd_filesystem));
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}
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Result CreateSdFile(const char *path, s64 size, s32 option) {
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R_TRY(EnsureSdInitialized());
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return fsFsCreateFile(&g_sd_filesystem, path, size, option);
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}
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Result DeleteSdFile(const char *path) {
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R_TRY(EnsureSdInitialized());
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return fsFsDeleteFile(&g_sd_filesystem, path);
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}
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bool HasSdFile(const char *path) {
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if (R_FAILED(EnsureSdInitialized())) {
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return false;
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}
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FsDirEntryType type;
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if (R_FAILED(fsFsGetEntryType(&g_sd_filesystem, path, &type))) {
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return false;
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}
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return type == FsDirEntryType_File;
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}
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bool HasAtmosphereSdFile(const char *path) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), path);
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return HasSdFile(fixed_path);
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}
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Result DeleteAtmosphereSdFile(const char *path) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), path);
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return DeleteSdFile(fixed_path);
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}
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Result CreateAtmosphereSdFile(const char *path, s64 size, s32 option) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), path);
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return CreateSdFile(fixed_path, size, option);
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}
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Result OpenSdFile(FsFile *out, const char *path, u32 mode) {
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R_TRY(EnsureSdInitialized());
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return fsFsOpenFile(&g_sd_filesystem, path, mode, out);
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}
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Result OpenAtmosphereSdFile(FsFile *out, const char *path, u32 mode) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), path);
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return OpenSdFile(out, fixed_path, mode);
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}
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Result OpenAtmosphereSdFile(FsFile *out, ncm::ProgramId program_id, const char *path, u32 mode) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), program_id, path);
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return OpenSdFile(out, fixed_path, mode);
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}
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Result OpenAtmosphereSdRomfsFile(FsFile *out, ncm::ProgramId program_id, const char *path, u32 mode) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereRomfsPath(fixed_path, sizeof(fixed_path), program_id, path);
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return OpenSdFile(out, fixed_path, mode);
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}
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Result OpenAtmosphereRomfsFile(FsFile *out, ncm::ProgramId program_id, const char *path, u32 mode, FsFileSystem *fs) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereRomfsPath(fixed_path, sizeof(fixed_path), program_id, path);
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return fsFsOpenFile(fs, fixed_path, mode, out);
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}
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Result CreateSdDirectory(const char *path) {
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R_TRY(EnsureSdInitialized());
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return fsFsCreateDirectory(&g_sd_filesystem, path);
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}
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Result CreateAtmosphereSdDirectory(const char *path) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), path);
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return CreateSdDirectory(fixed_path);
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}
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Result OpenSdDirectory(FsDir *out, const char *path, u32 mode) {
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R_TRY(EnsureSdInitialized());
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return fsFsOpenDirectory(&g_sd_filesystem, path, mode, out);
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}
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Result OpenAtmosphereSdDirectory(FsDir *out, const char *path, u32 mode) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), path);
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return OpenSdDirectory(out, fixed_path, mode);
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}
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Result OpenAtmosphereSdDirectory(FsDir *out, ncm::ProgramId program_id, const char *path, u32 mode) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), program_id, path);
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return OpenSdDirectory(out, fixed_path, mode);
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}
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Result OpenAtmosphereSdRomfsDirectory(FsDir *out, ncm::ProgramId program_id, const char *path, u32 mode) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereRomfsPath(fixed_path, sizeof(fixed_path), program_id, path);
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return OpenSdDirectory(out, fixed_path, mode);
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}
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Result OpenAtmosphereRomfsDirectory(FsDir *out, ncm::ProgramId program_id, const char *path, u32 mode, FsFileSystem *fs) {
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereRomfsPath(fixed_path, sizeof(fixed_path), program_id, path);
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return fsFsOpenDirectory(fs, fixed_path, mode, out);
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}
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void FormatAtmosphereSdPath(char *dst_path, size_t dst_path_size, const char *src_path) {
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if (src_path[0] == '/') {
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util::SNPrintf(dst_path, dst_path_size, "/atmosphere%s", src_path);
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} else {
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util::SNPrintf(dst_path, dst_path_size, "/atmosphere/%s", src_path);
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}
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}
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void FormatAtmosphereSdPath(char *dst_path, size_t dst_path_size, const char *subdir, const char *src_path) {
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if (src_path[0] == '/') {
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util::SNPrintf(dst_path, dst_path_size, "/atmosphere/%s%s", subdir, src_path);
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} else {
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util::SNPrintf(dst_path, dst_path_size, "/atmosphere/%s/%s", subdir, src_path);
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}
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}
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void FormatAtmosphereSdPath(char *dst_path, size_t dst_path_size, ncm::ProgramId program_id, const char *src_path) {
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if (src_path[0] == '/') {
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util::SNPrintf(dst_path, dst_path_size, "/atmosphere/contents/%016lx%s", static_cast<u64>(program_id), src_path);
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} else {
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util::SNPrintf(dst_path, dst_path_size, "/atmosphere/contents/%016lx/%s", static_cast<u64>(program_id), src_path);
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}
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}
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void FormatAtmosphereSdPath(char *dst_path, size_t dst_path_size, ncm::ProgramId program_id, const char *subdir, const char *src_path) {
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if (src_path[0] == '/') {
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util::SNPrintf(dst_path, dst_path_size, "/atmosphere/contents/%016lx/%s%s", static_cast<u64>(program_id), subdir, src_path);
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} else {
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util::SNPrintf(dst_path, dst_path_size, "/atmosphere/contents/%016lx/%s/%s", static_cast<u64>(program_id), subdir, src_path);
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}
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}
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bool HasSdRomfsContent(ncm::ProgramId program_id) {
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/* Check if romfs.bin is present. */
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{
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FsFile romfs_file;
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if (R_SUCCEEDED(OpenAtmosphereSdFile(&romfs_file, program_id, "romfs.bin", OpenMode_Read))) {
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fsFileClose(&romfs_file);
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return true;
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}
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}
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/* Check for romfs folder with content. */
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FsDir romfs_dir;
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if (R_FAILED(OpenAtmosphereSdRomfsDirectory(&romfs_dir, program_id, "", OpenDirectoryMode_All))) {
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return false;
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}
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ON_SCOPE_EXIT { fsDirClose(&romfs_dir); };
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/* Verify the folder has at least one entry. */
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s64 num_entries = 0;
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return R_SUCCEEDED(fsDirGetEntryCount(&romfs_dir, &num_entries)) && num_entries > 0;
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}
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Result SaveAtmosphereSdFile(FsFile *out, ncm::ProgramId program_id, const char *path, void *data, size_t size) {
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R_TRY(EnsureSdInitialized());
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), program_id, path);
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/* Unconditionally create. */
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/* Don't check error, as a failure here should be okay. */
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FsFile f;
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fsFsCreateFile(&g_sd_filesystem, fixed_path, size, 0);
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/* Try to open. */
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R_TRY(fsFsOpenFile(&g_sd_filesystem, fixed_path, OpenMode_ReadWrite, &f));
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auto file_guard = SCOPE_GUARD { fsFileClose(&f); };
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/* Try to set the size. */
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R_TRY(fsFileSetSize(&f, static_cast<s64>(size)));
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/* Try to write data. */
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R_TRY(fsFileWrite(&f, 0, data, size, FsWriteOption_Flush));
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/* Set output. */
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file_guard.Cancel();
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*out = f;
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return ResultSuccess();
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}
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Result CreateAndOpenAtmosphereSdFile(FsFile *out, ncm::ProgramId program_id, const char *path, size_t size) {
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R_TRY(EnsureSdInitialized());
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char fixed_path[ams::fs::EntryNameLengthMax + 1];
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FormatAtmosphereSdPath(fixed_path, sizeof(fixed_path), program_id, path);
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/* Unconditionally create. */
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/* Don't check error, as a failure here should be okay. */
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FsFile f;
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fsFsCreateFile(&g_sd_filesystem, fixed_path, size, 0);
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/* Try to open. */
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R_TRY(fsFsOpenFile(&g_sd_filesystem, fixed_path, OpenMode_ReadWrite, &f));
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auto file_guard = SCOPE_GUARD { fsFileClose(&f); };
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/* Try to set the size. */
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R_TRY(fsFileSetSize(&f, static_cast<s64>(size)));
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/* Set output. */
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file_guard.Cancel();
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*out = f;
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return ResultSuccess();
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}
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}
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