mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2025-10-31 19:25:46 +01:00
520 lines
18 KiB
C++
520 lines
18 KiB
C++
/*
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* Copyright (c) 2018 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 <atomic>
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#include <algorithm>
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#include <strings.h>
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#include "debug.hpp"
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#include "fsmitm_utils.hpp"
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#include "ini.h"
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#include "sha256.h"
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static FsFileSystem g_sd_filesystem = {0};
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static std::vector<u64> g_mitm_flagged_tids;
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static std::vector<u64> g_disable_mitm_flagged_tids;
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static std::atomic_bool g_has_initialized = false;
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static std::atomic_bool g_has_hid_session = false;
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static u64 g_override_key_combination = KEY_R;
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static u64 g_override_hbl_tid = 0x010000000000100DULL;
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static bool g_override_by_default = true;
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/* Static buffer for loader.ini contents at runtime. */
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static char g_config_ini_data[0x800];
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/* Backup file for CAL0 partition. */
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static constexpr size_t ProdinfoSize = 0x8000;
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static FsFile g_cal0_file = {0};
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static u8 g_cal0_storage_backup[ProdinfoSize];
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static u8 g_cal0_backup[ProdinfoSize];
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static bool IsHexadecimal(const char *str) {
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while (*str) {
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if (isxdigit(*str)) {
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str++;
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} else {
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return false;
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}
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}
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return true;
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}
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void Utils::InitializeSdThreadFunc(void *args) {
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/* Get required services. */
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Handle tmp_hnd = 0;
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static const char * const required_active_services[] = {"pcv", "gpio", "pinmux", "psc:c"};
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for (unsigned int i = 0; i < sizeof(required_active_services) / sizeof(required_active_services[0]); i++) {
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if (R_FAILED(smGetServiceOriginal(&tmp_hnd, smEncodeName(required_active_services[i])))) {
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/* TODO: Panic */
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} else {
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svcCloseHandle(tmp_hnd);
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}
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}
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/* Mount SD. */
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while (R_FAILED(fsMountSdcard(&g_sd_filesystem))) {
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svcSleepThread(1000000ULL);
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}
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/* Back up CAL0, if it's not backed up already. */
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fsFsCreateDirectory(&g_sd_filesystem, "/atmosphere/automatic_backups");
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{
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FsStorage cal0_storage;
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if (R_FAILED(fsOpenBisStorage(&cal0_storage, BisStorageId_Prodinfo)) || R_FAILED(fsStorageRead(&cal0_storage, 0, g_cal0_storage_backup, ProdinfoSize))) {
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std::abort();
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}
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fsStorageClose(&cal0_storage);
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char serial_number[0x40] = {0};
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memcpy(serial_number, g_cal0_storage_backup + 0x250, 0x18);
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char prodinfo_backup_path[FS_MAX_PATH] = {0};
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if (strlen(serial_number) > 0) {
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snprintf(prodinfo_backup_path, sizeof(prodinfo_backup_path) - 1, "/atmosphere/automatic_backups/%s_PRODINFO.bin", serial_number);
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} else {
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snprintf(prodinfo_backup_path, sizeof(prodinfo_backup_path) - 1, "/atmosphere/automatic_backups/PRODINFO.bin");
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}
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fsFsCreateFile(&g_sd_filesystem, prodinfo_backup_path, ProdinfoSize, 0);
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if (R_SUCCEEDED(fsFsOpenFile(&g_sd_filesystem, prodinfo_backup_path, FS_OPEN_READ | FS_OPEN_WRITE, &g_cal0_file))) {
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bool has_auto_backup = false;
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size_t read = 0;
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if (R_SUCCEEDED(fsFileRead(&g_cal0_file, 0, g_cal0_backup, sizeof(g_cal0_backup), &read)) && read == sizeof(g_cal0_backup)) {
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bool is_cal0_valid = true;
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is_cal0_valid &= memcmp(g_cal0_backup, "CAL0", 4) == 0;
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is_cal0_valid &= memcmp(g_cal0_backup + 0x250, serial_number, 0x18) == 0;
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u32 cal0_size = ((u32 *)g_cal0_backup)[2];
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is_cal0_valid &= cal0_size + 0x40 <= ProdinfoSize;
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if (is_cal0_valid) {
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struct sha256_state sha_ctx;
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u8 calc_hash[0x20];
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sha256_init(&sha_ctx);
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sha256_update(&sha_ctx, g_cal0_backup + 0x40, cal0_size);
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sha256_finalize(&sha_ctx);
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sha256_finish(&sha_ctx, calc_hash);
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is_cal0_valid &= memcmp(calc_hash, g_cal0_backup + 0x20, sizeof(calc_hash)) == 0;
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}
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has_auto_backup = is_cal0_valid;
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}
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if (!has_auto_backup) {
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fsFileSetSize(&g_cal0_file, ProdinfoSize);
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fsFileWrite(&g_cal0_file, 0, g_cal0_backup, ProdinfoSize);
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fsFileFlush(&g_cal0_file);
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}
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/* NOTE: g_cal0_file is intentionally not closed here. This prevents any other process from opening it. */
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memset(g_cal0_storage_backup, 0, sizeof(g_cal0_storage_backup));
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memset(g_cal0_backup, 0, sizeof(g_cal0_backup));
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}
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}
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/* Check for MitM flags. */
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FsDir titles_dir;
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if (R_SUCCEEDED(fsFsOpenDirectory(&g_sd_filesystem, "/atmosphere/titles", FS_DIROPEN_DIRECTORY, &titles_dir))) {
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FsDirectoryEntry dir_entry;
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FsFile f;
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u64 read_entries;
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while (R_SUCCEEDED((fsDirRead(&titles_dir, 0, &read_entries, 1, &dir_entry))) && read_entries == 1) {
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if (strlen(dir_entry.name) == 0x10 && IsHexadecimal(dir_entry.name)) {
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u64 title_id = strtoul(dir_entry.name, NULL, 16);
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char title_path[FS_MAX_PATH] = {0};
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strcpy(title_path, "/atmosphere/titles/");
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strcat(title_path, dir_entry.name);
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strcat(title_path, "/flags/fsmitm.flag");
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if (R_SUCCEEDED(fsFsOpenFile(&g_sd_filesystem, title_path, FS_OPEN_READ, &f))) {
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g_mitm_flagged_tids.push_back(title_id);
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fsFileClose(&f);
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} else {
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/* TODO: Deprecate. */
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memset(title_path, 0, sizeof(title_path));
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strcpy(title_path, "/atmosphere/titles/");
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strcat(title_path, dir_entry.name);
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strcat(title_path, "/fsmitm.flag");
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if (R_SUCCEEDED(fsFsOpenFile(&g_sd_filesystem, title_path, FS_OPEN_READ, &f))) {
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g_mitm_flagged_tids.push_back(title_id);
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fsFileClose(&f);
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}
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}
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memset(title_path, 0, sizeof(title_path));
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strcpy(title_path, "/atmosphere/titles/");
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strcat(title_path, dir_entry.name);
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strcat(title_path, "/flags/fsmitm_disable.flag");
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if (R_SUCCEEDED(fsFsOpenFile(&g_sd_filesystem, title_path, FS_OPEN_READ, &f))) {
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g_disable_mitm_flagged_tids.push_back(title_id);
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fsFileClose(&f);
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} else {
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/* TODO: Deprecate. */
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memset(title_path, 0, sizeof(title_path));
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strcpy(title_path, "/atmosphere/titles/");
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strcat(title_path, dir_entry.name);
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strcat(title_path, "/fsmitm_disable.flag");
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if (R_SUCCEEDED(fsFsOpenFile(&g_sd_filesystem, title_path, FS_OPEN_READ, &f))) {
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g_disable_mitm_flagged_tids.push_back(title_id);
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fsFileClose(&f);
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}
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}
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}
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}
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fsDirClose(&titles_dir);
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}
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Utils::RefreshConfiguration();
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g_has_initialized = true;
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svcExitThread();
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}
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void Utils::InitializeHidThreadFunc(void *args) {
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while (R_FAILED(hidInitialize())) {
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svcSleepThread(1000ULL);
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}
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g_has_hid_session = true;
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svcExitThread();
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}
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bool Utils::IsSdInitialized() {
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return g_has_initialized;
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}
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bool Utils::IsHidInitialized() {
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return g_has_hid_session;
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}
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Result Utils::OpenSdFile(const char *fn, int flags, FsFile *out) {
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if (!IsSdInitialized()) {
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return 0xFA202;
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}
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return fsFsOpenFile(&g_sd_filesystem, fn, flags, out);
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}
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Result Utils::OpenSdFileForAtmosphere(u64 title_id, const char *fn, int flags, FsFile *out) {
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if (!IsSdInitialized()) {
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return 0xFA202;
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}
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char path[FS_MAX_PATH];
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if (*fn == '/') {
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snprintf(path, sizeof(path), "/atmosphere/titles/%016lx%s", title_id, fn);
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} else {
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snprintf(path, sizeof(path), "/atmosphere/titles/%016lx/%s", title_id, fn);
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}
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return fsFsOpenFile(&g_sd_filesystem, path, flags, out);
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}
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Result Utils::OpenRomFSSdFile(u64 title_id, const char *fn, int flags, FsFile *out) {
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if (!IsSdInitialized()) {
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return 0xFA202;
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}
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return OpenRomFSFile(&g_sd_filesystem, title_id, fn, flags, out);
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}
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Result Utils::OpenSdDir(const char *path, FsDir *out) {
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if (!IsSdInitialized()) {
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return 0xFA202;
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}
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return fsFsOpenDirectory(&g_sd_filesystem, path, FS_DIROPEN_DIRECTORY | FS_DIROPEN_FILE, out);
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}
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Result Utils::OpenSdDirForAtmosphere(u64 title_id, const char *path, FsDir *out) {
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if (!IsSdInitialized()) {
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return 0xFA202;
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}
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char safe_path[FS_MAX_PATH];
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if (*path == '/') {
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snprintf(safe_path, sizeof(safe_path), "/atmosphere/titles/%016lx%s", title_id, path);
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} else {
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snprintf(safe_path, sizeof(safe_path), "/atmosphere/titles/%016lx/%s", title_id, path);
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}
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return fsFsOpenDirectory(&g_sd_filesystem, safe_path, FS_DIROPEN_DIRECTORY | FS_DIROPEN_FILE, out);
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}
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Result Utils::OpenRomFSSdDir(u64 title_id, const char *path, FsDir *out) {
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if (!IsSdInitialized()) {
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return 0xFA202;
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}
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return OpenRomFSDir(&g_sd_filesystem, title_id, path, out);
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}
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Result Utils::OpenRomFSFile(FsFileSystem *fs, u64 title_id, const char *fn, int flags, FsFile *out) {
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char path[FS_MAX_PATH];
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if (*fn == '/') {
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snprintf(path, sizeof(path), "/atmosphere/titles/%016lx/romfs%s", title_id, fn);
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} else {
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snprintf(path, sizeof(path), "/atmosphere/titles/%016lx/romfs/%s", title_id, fn);
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}
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return fsFsOpenFile(fs, path, flags, out);
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}
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Result Utils::OpenRomFSDir(FsFileSystem *fs, u64 title_id, const char *path, FsDir *out) {
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char safe_path[FS_MAX_PATH];
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if (*path == '/') {
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snprintf(safe_path, sizeof(safe_path), "/atmosphere/titles/%016lx/romfs%s", title_id, path);
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} else {
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snprintf(safe_path, sizeof(safe_path), "/atmosphere/titles/%016lx/romfs/%s", title_id, path);
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}
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return fsFsOpenDirectory(fs, safe_path, FS_DIROPEN_DIRECTORY | FS_DIROPEN_FILE, out);
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}
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bool Utils::HasSdRomfsContent(u64 title_id) {
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/* Check for romfs.bin. */
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FsFile data_file;
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if (R_SUCCEEDED(Utils::OpenSdFileForAtmosphere(title_id, "romfs.bin", FS_OPEN_READ, &data_file))) {
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fsFileClose(&data_file);
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return true;
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}
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/* Check for romfs folder with non-zero content. */
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FsDir dir;
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if (R_FAILED(Utils::OpenRomFSSdDir(title_id, "", &dir))) {
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return false;
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}
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ON_SCOPE_EXIT {
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fsDirClose(&dir);
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};
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FsDirectoryEntry dir_entry;
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u64 read_entries;
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return R_SUCCEEDED(fsDirRead(&dir, 0, &read_entries, 1, &dir_entry)) && read_entries == 1;
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}
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Result Utils::SaveSdFileForAtmosphere(u64 title_id, const char *fn, void *data, size_t size) {
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if (!IsSdInitialized()) {
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return 0xFA202;
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}
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Result rc = 0;
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char path[FS_MAX_PATH];
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if (*fn == '/') {
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snprintf(path, sizeof(path), "/atmosphere/titles/%016lx%s", title_id, fn);
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} else {
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snprintf(path, sizeof(path), "/atmosphere/titles/%016lx/%s", title_id, fn);
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}
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/* Unconditionally create. */
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FsFile f;
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fsFsCreateFile(&g_sd_filesystem, path, size, 0);
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/* Try to open. */
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rc = fsFsOpenFile(&g_sd_filesystem, path, FS_OPEN_READ | FS_OPEN_WRITE, &f);
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if (R_FAILED(rc)) {
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return rc;
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}
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/* Always close, if we opened. */
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ON_SCOPE_EXIT {
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fsFileClose(&f);
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};
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/* Try to make it big enough. */
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rc = fsFileSetSize(&f, size);
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if (R_FAILED(rc)) {
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return rc;
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}
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/* Try to write the data. */
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rc = fsFileWrite(&f, 0, data, size);
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return rc;
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}
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bool Utils::HasTitleFlag(u64 tid, const char *flag) {
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if (IsSdInitialized()) {
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FsFile f;
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char flag_path[FS_MAX_PATH];
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memset(flag_path, 0, sizeof(flag_path));
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snprintf(flag_path, sizeof(flag_path) - 1, "flags/%s.flag", flag);
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if (OpenSdFileForAtmosphere(tid, flag_path, FS_OPEN_READ, &f)) {
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fsFileClose(&f);
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return true;
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}
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/* TODO: Deprecate. */
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snprintf(flag_path, sizeof(flag_path) - 1, "%s.flag", flag);
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if (OpenSdFileForAtmosphere(tid, flag_path, FS_OPEN_READ, &f)) {
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fsFileClose(&f);
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return true;
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}
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}
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return false;
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}
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bool Utils::HasGlobalFlag(const char *flag) {
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if (IsSdInitialized()) {
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FsFile f;
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char flag_path[FS_MAX_PATH] = {0};
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snprintf(flag_path, sizeof(flag_path), "/atmosphere/flags/%s.flag", flag);
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if (fsFsOpenFile(&g_sd_filesystem, flag_path, FS_OPEN_READ, &f)) {
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fsFileClose(&f);
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return true;
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}
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}
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return false;
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}
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bool Utils::HasHblFlag(const char *flag) {
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char hbl_flag[FS_MAX_PATH] = {0};
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snprintf(hbl_flag, sizeof(hbl_flag), "hbl_%s", flag);
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return HasGlobalFlag(hbl_flag);
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}
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bool Utils::HasFlag(u64 tid, const char *flag) {
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return HasTitleFlag(tid, flag) || (tid == g_override_hbl_tid && HasHblFlag(flag));
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}
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bool Utils::HasSdMitMFlag(u64 tid) {
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if (tid == g_override_hbl_tid) {
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return true;
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}
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if (IsSdInitialized()) {
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return std::find(g_mitm_flagged_tids.begin(), g_mitm_flagged_tids.end(), tid) != g_mitm_flagged_tids.end();
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}
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return false;
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}
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bool Utils::HasSdDisableMitMFlag(u64 tid) {
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if (IsSdInitialized()) {
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return std::find(g_disable_mitm_flagged_tids.begin(), g_disable_mitm_flagged_tids.end(), tid) != g_disable_mitm_flagged_tids.end();
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}
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return false;
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}
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Result Utils::GetKeysDown(u64 *keys) {
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if (!Utils::IsHidInitialized()) {
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return MAKERESULT(Module_Libnx, LibnxError_InitFail_HID);
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}
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hidScanInput();
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*keys = hidKeysDown(CONTROLLER_P1_AUTO);
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return 0x0;
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}
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bool Utils::HasOverrideButton(u64 tid) {
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if (tid < 0x0100000000010000ULL || !IsSdInitialized()) {
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/* Disable button override disable for non-applications. */
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return true;
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}
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/* Unconditionally refresh loader.ini contents. */
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RefreshConfiguration();
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u64 kDown = 0;
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bool keys_triggered = (R_SUCCEEDED(GetKeysDown(&kDown)) && ((kDown & g_override_key_combination) != 0));
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return IsSdInitialized() && (g_override_by_default ^ keys_triggered);
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}
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static int FsMitMIniHandler(void *user, const char *section, const char *name, const char *value) {
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/* Taken and modified, with love, from Rajkosto's implementation. */
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if (strcasecmp(section, "config") == 0) {
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if (strcasecmp(name, "hbl_tid") == 0) {
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u64 override_tid = strtoul(value, NULL, 16);
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if (override_tid != 0) {
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g_override_hbl_tid = override_tid;
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}
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} else if (strcasecmp(name, "override_key") == 0) {
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if (value[0] == '!') {
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g_override_by_default = true;
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value++;
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} else {
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g_override_by_default = false;
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}
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if (strcasecmp(value, "A") == 0) {
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g_override_key_combination = KEY_A;
|
|
} else if (strcasecmp(value, "B") == 0) {
|
|
g_override_key_combination = KEY_B;
|
|
} else if (strcasecmp(value, "X") == 0) {
|
|
g_override_key_combination = KEY_X;
|
|
} else if (strcasecmp(value, "Y") == 0) {
|
|
g_override_key_combination = KEY_Y;
|
|
} else if (strcasecmp(value, "LS") == 0) {
|
|
g_override_key_combination = KEY_LSTICK;
|
|
} else if (strcasecmp(value, "RS") == 0) {
|
|
g_override_key_combination = KEY_RSTICK;
|
|
} else if (strcasecmp(value, "L") == 0) {
|
|
g_override_key_combination = KEY_L;
|
|
} else if (strcasecmp(value, "R") == 0) {
|
|
g_override_key_combination = KEY_R;
|
|
} else if (strcasecmp(value, "ZL") == 0) {
|
|
g_override_key_combination = KEY_ZL;
|
|
} else if (strcasecmp(value, "ZR") == 0) {
|
|
g_override_key_combination = KEY_ZR;
|
|
} else if (strcasecmp(value, "PLUS") == 0) {
|
|
g_override_key_combination = KEY_PLUS;
|
|
} else if (strcasecmp(value, "MINUS") == 0) {
|
|
g_override_key_combination = KEY_MINUS;
|
|
} else if (strcasecmp(value, "DLEFT") == 0) {
|
|
g_override_key_combination = KEY_DLEFT;
|
|
} else if (strcasecmp(value, "DUP") == 0) {
|
|
g_override_key_combination = KEY_DUP;
|
|
} else if (strcasecmp(value, "DRIGHT") == 0) {
|
|
g_override_key_combination = KEY_DRIGHT;
|
|
} else if (strcasecmp(value, "DDOWN") == 0) {
|
|
g_override_key_combination = KEY_DDOWN;
|
|
} else if (strcasecmp(value, "SL") == 0) {
|
|
g_override_key_combination = KEY_SL;
|
|
} else if (strcasecmp(value, "SR") == 0) {
|
|
g_override_key_combination = KEY_SR;
|
|
} else {
|
|
g_override_key_combination = 0;
|
|
}
|
|
}
|
|
} else {
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
void Utils::RefreshConfiguration() {
|
|
FsFile config_file;
|
|
if (R_FAILED(fsFsOpenFile(&g_sd_filesystem, "/atmosphere/loader.ini", FS_OPEN_READ, &config_file))) {
|
|
return;
|
|
}
|
|
|
|
u64 size;
|
|
if (R_FAILED(fsFileGetSize(&config_file, &size))) {
|
|
return;
|
|
}
|
|
|
|
size = std::min(size, (decltype(size))0x7FF);
|
|
|
|
/* Read in string. */
|
|
std::fill(g_config_ini_data, g_config_ini_data + 0x800, 0);
|
|
size_t r_s;
|
|
fsFileRead(&config_file, 0, g_config_ini_data, size, &r_s);
|
|
fsFileClose(&config_file);
|
|
|
|
ini_parse_string(g_config_ini_data, FsMitMIniHandler, NULL);
|
|
} |