Atmosphere/stratosphere/ams_mitm/source/set_mitm/setsys_firmware_version.cpp

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/*
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* Copyright (c) 2018-2019 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 <mutex>
#include <switch.h>
#include "setsys_firmware_version.hpp"
static HosMutex g_version_mutex;
static bool g_got_version = false;
static SetSysFirmwareVersion g_ams_fw_version = {0};
static SetSysFirmwareVersion g_fw_version = {0};
void VersionManager::Initialize() {
std::scoped_lock<HosMutex> lock(g_version_mutex);
if (g_got_version) {
return;
}
/* Mount firmware version data archive. */
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R_ASSERT(romfsMountFromDataArchive(static_cast<u64>(sts::ncm::TitleId::ArchiveSystemVersion), FsStorageId_NandSystem, "sysver"));
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{
ON_SCOPE_EXIT { romfsUnmount("sysver"); };
SetSysFirmwareVersion fw_ver;
/* Firmware version file must exist. */
FILE *f = fopen("sysver:/file", "rb");
if (f == NULL) {
std::abort();
}
/* Must be possible to read firmware version from file. */
if (fread(&fw_ver, sizeof(fw_ver), 1, f) != 1) {
std::abort();
}
fclose(f);
g_fw_version = fw_ver;
g_ams_fw_version = fw_ver;
}
/* Modify the output firmware version. */
{
u32 major, minor, micro;
GetAtmosphereApiVersion(&major, &minor, &micro, nullptr, nullptr);
const char emummc_char = IsEmummc() ? 'E' : 'S';
{
char display_version[sizeof(g_ams_fw_version.display_version)] = {0};
std::snprintf(display_version, sizeof(display_version), "%s|AMS %u.%u.%u|%c", g_ams_fw_version.display_version, major, minor, micro, emummc_char);
std::memcpy(g_ams_fw_version.display_version, display_version, sizeof(g_ams_fw_version.display_version));
}
}
g_got_version = true;
}
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Result VersionManager::GetFirmwareVersion(sts::ncm::TitleId title_id, SetSysFirmwareVersion *out) {
VersionManager::Initialize();
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/* Report atmosphere string to qlaunch, maintenance and nothing else. */
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if (title_id == sts::ncm::TitleId::AppletQlaunch || title_id == sts::ncm::TitleId::AppletMaintenanceMenu) {
*out = g_ams_fw_version;
} else {
*out = g_fw_version;
}
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return ResultSuccess;
}