mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-30 15:52:15 +00:00
351 lines
No EOL
13 KiB
C++
351 lines
No EOL
13 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 <map>
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#include <memory>
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#include <mutex>
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#include <switch.h>
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#include <stratosphere.hpp>
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#include "fsmitm_service.hpp"
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#include "fs_shim.h"
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#include "../utils.hpp"
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#include "fsmitm_boot0storage.hpp"
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#include "fsmitm_romstorage.hpp"
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#include "fsmitm_layeredrom.hpp"
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#include "fs_subdirectory_filesystem.hpp"
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#include "fs_directory_savedata_filesystem.hpp"
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#include "../debug.hpp"
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static HosMutex g_StorageCacheLock;
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static std::unordered_map<u64, std::weak_ptr<IStorageInterface>> g_StorageCache;
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static bool StorageCacheGetEntry(u64 title_id, std::shared_ptr<IStorageInterface> *out) {
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std::scoped_lock<HosMutex> lock(g_StorageCacheLock);
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if (g_StorageCache.find(title_id) == g_StorageCache.end()) {
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return false;
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}
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auto intf = g_StorageCache[title_id].lock();
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if (intf != nullptr) {
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*out = intf;
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return true;
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}
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return false;
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}
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static void StorageCacheSetEntry(u64 title_id, std::shared_ptr<IStorageInterface> *ptr) {
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std::scoped_lock<HosMutex> lock(g_StorageCacheLock);
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/* Ensure we always use the cached copy if present. */
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if (g_StorageCache.find(title_id) != g_StorageCache.end()) {
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auto intf = g_StorageCache[title_id].lock();
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if (intf != nullptr) {
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*ptr = intf;
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}
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}
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g_StorageCache[title_id] = *ptr;
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}
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void FsMitmService::PostProcess(IMitmServiceObject *obj, IpcResponseContext *ctx) {
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auto this_ptr = static_cast<FsMitmService *>(obj);
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switch ((FspSrvCmd)ctx->cmd_id) {
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case FspSrvCmd_SetCurrentProcess:
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if (R_SUCCEEDED(ctx->rc)) {
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this_ptr->has_initialized = true;
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this_ptr->process_id = ctx->request.Pid;
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this_ptr->title_id = this_ptr->process_id;
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if (R_FAILED(MitmQueryUtils::GetAssociatedTidForPid(this_ptr->process_id, &this_ptr->title_id))) {
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/* Log here, if desired. */
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}
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break;
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}
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break;
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default:
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break;
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}
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}
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Result FsMitmService::OpenHblWebContentFileSystem(Out<std::shared_ptr<IFileSystemInterface>> &out_fs) {
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std::shared_ptr<IFileSystemInterface> fs = nullptr;
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u32 out_domain_id = 0;
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Result rc = ResultSuccess;
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ON_SCOPE_EXIT {
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if (R_SUCCEEDED(rc)) {
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out_fs.SetValue(std::move(fs));
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if (out_fs.IsDomain()) {
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out_fs.ChangeObjectId(out_domain_id);
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}
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}
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};
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/* Mount the SD card using fs.mitm's session. */
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FsFileSystem sd_fs;
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rc = fsMountSdcard(&sd_fs);
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if (R_SUCCEEDED(rc)) {
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fs = std::make_shared<IFileSystemInterface>(std::make_unique<SubDirectoryFileSystem>(std::make_shared<ProxyFileSystem>(sd_fs), AtmosphereHblWebContentDir));
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if (out_fs.IsDomain()) {
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out_domain_id = sd_fs.s.object_id;
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}
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}
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return rc;
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}
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Result FsMitmService::OpenFileSystemWithPatch(Out<std::shared_ptr<IFileSystemInterface>> out_fs, u64 title_id, u32 filesystem_type) {
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/* Check for eligibility. */
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{
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FsDir d;
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if (!Utils::IsWebAppletTid(this->title_id) || filesystem_type != FsFileSystemType_ContentManual || !Utils::IsHblTid(title_id) ||
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R_FAILED(Utils::OpenSdDir(AtmosphereHblWebContentDir, &d))) {
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return ResultAtmosphereMitmShouldForwardToSession;
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}
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fsDirClose(&d);
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}
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/* If there's an existing filesystem, don't override. */
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/* TODO: Multiplex, overriding existing content with HBL content. */
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{
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FsFileSystem fs;
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if (R_SUCCEEDED(fsOpenFileSystemWithPatchFwd(this->forward_service.get(), &fs, title_id, static_cast<FsFileSystemType>(filesystem_type)))) {
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fsFsClose(&fs);
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return ResultAtmosphereMitmShouldForwardToSession;
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}
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}
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return this->OpenHblWebContentFileSystem(out_fs);
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}
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Result FsMitmService::OpenFileSystemWithId(Out<std::shared_ptr<IFileSystemInterface>> out_fs, InPointer<char> path, u64 title_id, u32 filesystem_type) {
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/* Check for eligibility. */
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{
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FsDir d;
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if (!Utils::IsWebAppletTid(this->title_id) || filesystem_type != FsFileSystemType_ContentManual || !Utils::IsHblTid(title_id) ||
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R_FAILED(Utils::OpenSdDir(AtmosphereHblWebContentDir, &d))) {
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return ResultAtmosphereMitmShouldForwardToSession;
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}
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fsDirClose(&d);
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}
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/* If there's an existing filesystem, don't override. */
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/* TODO: Multiplex, overriding existing content with HBL content. */
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{
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FsFileSystem fs;
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if (R_SUCCEEDED(fsOpenFileSystemWithIdFwd(this->forward_service.get(), &fs, title_id, static_cast<FsFileSystemType>(filesystem_type), path.pointer))) {
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fsFsClose(&fs);
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return ResultAtmosphereMitmShouldForwardToSession;
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}
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}
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return this->OpenHblWebContentFileSystem(out_fs);
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}
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/* Gate access to the BIS partitions. */
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Result FsMitmService::OpenBisStorage(Out<std::shared_ptr<IStorageInterface>> out_storage, u32 bis_partition_id) {
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std::shared_ptr<IStorageInterface> storage = nullptr;
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u32 out_domain_id = 0;
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Result rc = ResultSuccess;
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ON_SCOPE_EXIT {
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if (R_SUCCEEDED(rc)) {
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out_storage.SetValue(std::move(storage));
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if (out_storage.IsDomain()) {
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out_storage.ChangeObjectId(out_domain_id);
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}
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}
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};
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{
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FsStorage bis_storage;
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rc = fsOpenBisStorageFwd(this->forward_service.get(), &bis_storage, bis_partition_id);
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if (R_SUCCEEDED(rc)) {
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const bool is_sysmodule = TitleIdIsSystem(this->title_id);
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const bool has_bis_write_flag = Utils::HasFlag(this->title_id, "bis_write");
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const bool has_cal0_read_flag = Utils::HasFlag(this->title_id, "cal_read");
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if (bis_partition_id == BisStorageId_Boot0) {
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storage = std::make_shared<IStorageInterface>(new Boot0Storage(bis_storage, this->title_id));
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} else if (bis_partition_id == BisStorageId_Prodinfo) {
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/* PRODINFO should *never* be writable. */
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if (is_sysmodule || has_cal0_read_flag) {
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storage = std::make_shared<IStorageInterface>(new ROProxyStorage(bis_storage));
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} else {
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/* Do not allow non-sysmodules to read *or* write CAL0. */
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fsStorageClose(&bis_storage);
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return ResultFsPermissionDenied;
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}
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} else {
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if (is_sysmodule || has_bis_write_flag) {
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/* Sysmodules should still be allowed to read and write. */
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storage = std::make_shared<IStorageInterface>(new ProxyStorage(bis_storage));
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} else if (Utils::IsHblTid(this->title_id) &&
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((BisStorageId_BcPkg2_1 <= bis_partition_id && bis_partition_id <= BisStorageId_BcPkg2_6) || bis_partition_id == BisStorageId_Boot1)) {
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/* Allow HBL to write to boot1 (safe firm) + package2. */
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/* This is needed to not break compatibility with ChoiDujourNX, which does not check for write access before beginning an update. */
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/* TODO: get fixed so that this can be turned off without causing bricks :/ */
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storage = std::make_shared<IStorageInterface>(new ProxyStorage(bis_storage));
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} else {
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/* Non-sysmodules should be allowed to read. */
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storage = std::make_shared<IStorageInterface>(new ROProxyStorage(bis_storage));
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}
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}
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if (out_storage.IsDomain()) {
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out_domain_id = bis_storage.s.object_id;
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}
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}
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}
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return rc;
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}
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/* Add redirection for RomFS to the SD card. */
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Result FsMitmService::OpenDataStorageByCurrentProcess(Out<std::shared_ptr<IStorageInterface>> out_storage) {
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std::shared_ptr<IStorageInterface> storage = nullptr;
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u32 out_domain_id = 0;
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Result rc = ResultSuccess;
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if (!this->should_override_contents) {
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return ResultAtmosphereMitmShouldForwardToSession;
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}
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bool has_cache = StorageCacheGetEntry(this->title_id, &storage);
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ON_SCOPE_EXIT {
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if (R_SUCCEEDED(rc)) {
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if (!has_cache) {
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StorageCacheSetEntry(this->title_id, &storage);
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}
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out_storage.SetValue(std::move(storage));
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if (out_storage.IsDomain()) {
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out_storage.ChangeObjectId(out_domain_id);
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}
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}
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};
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if (has_cache) {
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if (out_storage.IsDomain()) {
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FsStorage s = {0};
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rc = fsOpenDataStorageByCurrentProcessFwd(this->forward_service.get(), &s);
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if (R_SUCCEEDED(rc)) {
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out_domain_id = s.s.object_id;
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}
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} else {
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rc = ResultSuccess;
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}
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if (R_FAILED(rc)) {
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storage.reset();
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}
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} else {
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FsStorage data_storage;
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FsFile data_file;
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rc = fsOpenDataStorageByCurrentProcessFwd(this->forward_service.get(), &data_storage);
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Log(armGetTls(), 0x100);
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if (R_SUCCEEDED(rc)) {
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if (Utils::HasSdRomfsContent(this->title_id)) {
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/* TODO: Is there a sensible path that ends in ".romfs" we can use?" */
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if (R_SUCCEEDED(Utils::OpenSdFileForAtmosphere(this->title_id, "romfs.bin", FS_OPEN_READ, &data_file))) {
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storage = std::make_shared<IStorageInterface>(new LayeredRomFS(std::make_shared<RomInterfaceStorage>(data_storage), std::make_shared<RomFileStorage>(data_file), this->title_id));
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} else {
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storage = std::make_shared<IStorageInterface>(new LayeredRomFS(std::make_shared<RomInterfaceStorage>(data_storage), nullptr, this->title_id));
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}
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if (out_storage.IsDomain()) {
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out_domain_id = data_storage.s.object_id;
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}
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} else {
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/* If we don't have anything to modify, there's no sense in maintaining a copy of the metadata tables. */
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fsStorageClose(&data_storage);
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rc = ResultAtmosphereMitmShouldForwardToSession;
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}
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}
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}
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return rc;
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}
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/* Add redirection for System Data Archives to the SD card. */
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Result FsMitmService::OpenDataStorageByDataId(Out<std::shared_ptr<IStorageInterface>> out_storage, u64 data_id, u8 sid) {
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FsStorageId storage_id = (FsStorageId)sid;
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FsStorage data_storage;
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FsFile data_file;
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if (!this->should_override_contents) {
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return ResultAtmosphereMitmShouldForwardToSession;
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}
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std::shared_ptr<IStorageInterface> storage = nullptr;
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u32 out_domain_id = 0;
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Result rc = ResultSuccess;
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bool has_cache = StorageCacheGetEntry(data_id, &storage);
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ON_SCOPE_EXIT {
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if (R_SUCCEEDED(rc)) {
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if (!has_cache) {
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StorageCacheSetEntry(data_id, &storage);
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}
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out_storage.SetValue(std::move(storage));
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if (out_storage.IsDomain()) {
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out_storage.ChangeObjectId(out_domain_id);
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}
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}
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};
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if (has_cache) {
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if (out_storage.IsDomain()) {
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FsStorage s = {0};
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rc = fsOpenDataStorageByDataIdFwd(this->forward_service.get(), storage_id, data_id, &s);
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if (R_SUCCEEDED(rc)) {
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out_domain_id = s.s.object_id;
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}
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} else {
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rc = ResultSuccess;
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}
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if (R_FAILED(rc)) {
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storage.reset();
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}
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} else {
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rc = fsOpenDataStorageByDataIdFwd(this->forward_service.get(), storage_id, data_id, &data_storage);
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if (R_SUCCEEDED(rc)) {
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if (Utils::HasSdRomfsContent(data_id)) {
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/* TODO: Is there a sensible path that ends in ".romfs" we can use?" */
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if (R_SUCCEEDED(Utils::OpenSdFileForAtmosphere(data_id, "romfs.bin", FS_OPEN_READ, &data_file))) {
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storage = std::make_shared<IStorageInterface>(new LayeredRomFS(std::make_shared<RomInterfaceStorage>(data_storage), std::make_shared<RomFileStorage>(data_file), data_id));
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} else {
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storage = std::make_shared<IStorageInterface>(new LayeredRomFS(std::make_shared<RomInterfaceStorage>(data_storage), nullptr, data_id));
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}
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if (out_storage.IsDomain()) {
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out_domain_id = data_storage.s.object_id;
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}
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} else {
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/* If we don't have anything to modify, there's no sense in maintaining a copy of the metadata tables. */
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fsStorageClose(&data_storage);
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rc = ResultAtmosphereMitmShouldForwardToSession;
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}
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}
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}
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return rc;
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} |