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Atmosphere/libraries/libstratosphere/source/cfg/cfg_flags.cpp
2021-03-21 13:16:30 -07:00

106 lines
3.8 KiB
C++

/*
* Copyright (c) 2018-2020 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>
namespace ams::cfg {
namespace {
std::atomic<u32> g_flag_mount_count;
/* Helper. */
void GetFlagMountName(char *dst) {
util::SNPrintf(dst, fs::MountNameLengthMax + 1, "#flag%08x", g_flag_mount_count.fetch_add(1));
}
bool HasFlagFile(const char *flag_path) {
/* All flags are not present until the SD card is. */
if (!IsSdCardInitialized()) {
return false;
}
/* Mount the SD card. */
char mount_name[fs::MountNameLengthMax + 1];
GetFlagMountName(mount_name);
if (R_FAILED(fs::MountSdCard(mount_name))) {
return false;
}
ON_SCOPE_EXIT { fs::Unmount(mount_name); };
/* Check if the entry exists. */
char full_path[fs::EntryNameLengthMax + 1];
util::SNPrintf(full_path, sizeof(full_path), "%s:/%s", mount_name, flag_path[0] == '/' ? flag_path + 1 : flag_path);
bool has_file;
if (R_FAILED(fs::HasFile(std::addressof(has_file), full_path))) {
return false;
}
return has_file;
}
Result DeleteFlagFile(const char *flag_path) {
/* We need the SD card to be available to delete anything. */
AMS_ABORT_UNLESS(IsSdCardInitialized());
/* Mount the sd card. */
char mount_name[fs::MountNameLengthMax + 1];
GetFlagMountName(mount_name);
R_TRY(fs::MountSdCard(mount_name));
ON_SCOPE_EXIT { fs::Unmount(mount_name); };
/* Get the flag path. */
char full_path[fs::EntryNameLengthMax + 1];
util::SNPrintf(full_path, sizeof(full_path), "%s:/%s", mount_name, flag_path[0] == '/' ? flag_path + 1 : flag_path);
/* Delete the file. */
R_TRY(fs::DeleteFile(full_path));
return ResultSuccess();
}
}
/* Flag utilities. */
bool HasFlag(const sm::MitmProcessInfo &process_info, const char *flag) {
return HasContentSpecificFlag(process_info.program_id, flag) || (process_info.override_status.IsHbl() && HasHblFlag(flag));
}
bool HasContentSpecificFlag(ncm::ProgramId program_id, const char *flag) {
char content_flag[fs::EntryNameLengthMax + 1];
util::SNPrintf(content_flag, sizeof(content_flag) - 1, "/atmosphere/contents/%016lx/flags/%s.flag", static_cast<u64>(program_id), flag);
return HasFlagFile(content_flag);
}
bool HasGlobalFlag(const char *flag) {
char global_flag[fs::EntryNameLengthMax + 1];
util::SNPrintf(global_flag, sizeof(global_flag) - 1, "/atmosphere/flags/%s.flag", flag);
return HasFlagFile(global_flag);
}
bool HasHblFlag(const char *flag) {
char hbl_flag[0x100];
util::SNPrintf(hbl_flag, sizeof(hbl_flag) - 1, "hbl_%s", flag);
return HasGlobalFlag(hbl_flag);
}
Result DeleteGlobalFlag(const char *flag) {
char global_flag[fs::EntryNameLengthMax + 1];
util::SNPrintf(global_flag, sizeof(global_flag) - 1, "/atmosphere/flags/%s.flag", flag);
return DeleteFlagFile(global_flag);
}
}