SaveLib PR related fixes (#1011)

* Safety checks in all SFO readings

* SaveData: log backup error and continue & fix possible concurrent file editing

* SaveData: Fix issue with old firmwares

src/core/libraries/app_content/app_content.cpp

@@ -4,6 +4,7 @@
 #include <cmath>
 
 #include "app_content.h"
+#include "common/assert.h"
 #include "common/io_file.h"
 #include "common/logging/log.h"
 #include "common/path_util.h"
@@ -246,7 +247,11 @@ int PS4_SYSV_ABI sceAppContentInitialize(const OrbisAppContentInitParam* initPar
     auto* param_sfo = Common::Singleton<PSF>::Instance();
 
     const auto addons_dir = Common::FS::GetUserPath(Common::FS::PathType::AddonsDir);
-    title_id = *param_sfo->GetString("TITLE_ID");
+    if (const auto value = param_sfo->GetString("TITLE_ID"); value.has_value()) {
+        title_id = *value;
+    } else {
+        UNREACHABLE_MSG("Failed to get TITLE_ID");
+    }
     auto addon_path = addons_dir / title_id;
     if (std::filesystem::exists(addon_path)) {
         for (const auto& entry : std::filesystem::directory_iterator(addon_path)) {

src/core/libraries/save_data/dialog/savedatadialog_ui.cpp

@@ -6,6 +6,7 @@
 #include <magic_enum.hpp>
 
 #include "common/singleton.h"
+#include "common/string_util.h"
 #include "core/file_sys/fs.h"
 #include "core/libraries/save_data/save_instance.h"
 #include "imgui/imgui_std.h"
@@ -46,11 +47,13 @@ void SaveDialogResult::CopyTo(OrbisSaveDataDialogResult& result) const {
     result.mode = this->mode;
     result.result = this->result;
     result.buttonId = this->button_id;
-    if (result.dirName != nullptr) {
-        result.dirName->data.FromString(this->dir_name);
-    }
-    if (result.param != nullptr && this->param.GetString(SaveParams::MAINTITLE).has_value()) {
-        result.param->FromSFO(this->param);
+    if (has_item) {
+        if (result.dirName != nullptr) {
+            result.dirName->data.FromString(this->dir_name);
+        }
+        if (result.param != nullptr && this->param.GetString(SaveParams::MAINTITLE).has_value()) {
+            result.param->FromSFO(this->param);
+        }
     }
     result.userData = this->user_data;
 }
@@ -63,8 +66,9 @@ SaveDialogState::SaveDialogState(const OrbisSaveDataDialogParam& param) {
         this->enable_back = {param.optionParam->back == OptionBack::ENABLE};
     }
 
-    static std::string game_serial{*Common::Singleton<PSF>::Instance()->GetString("CONTENT_ID"), 7,
-                                   9};
+    const auto content_id = Common::Singleton<PSF>::Instance()->GetString("CONTENT_ID");
+    ASSERT_MSG(content_id.has_value(), "Failed to get CONTENT_ID");
+    static std::string game_serial{*content_id, 7, 9};
 
     const auto item = param.items;
     this->user_id = item->userId;
@@ -115,9 +119,9 @@ SaveDialogState::SaveDialogState(const OrbisSaveDataDialogParam& param) {
             .dir_name = std::string{dir_name},
             .icon = icon,
 
-            .title = std::string{*param_sfo.GetString(SaveParams::MAINTITLE)},
-            .subtitle = std::string{*param_sfo.GetString(SaveParams::SUBTITLE)},
-            .details = std::string{*param_sfo.GetString(SaveParams::DETAIL)},
+            .title = std::string{param_sfo.GetString(SaveParams::MAINTITLE).value_or("Unknown")},
+            .subtitle = std::string{param_sfo.GetString(SaveParams::SUBTITLE).value_or("")},
+            .details = std::string{param_sfo.GetString(SaveParams::DETAIL).value_or("")},
             .date = date_str,
             .size = size_str,
             .last_write = param_sfo.GetLastWrite(),
@@ -126,12 +130,12 @@ SaveDialogState::SaveDialogState(const OrbisSaveDataDialogParam& param) {
         });
     }
 
-    if (type == DialogType::SAVE) {
+    if (type == DialogType::SAVE && item->newItem != nullptr) {
         RefCountedTexture icon;
         std::string title{"New Save"};
 
         const auto new_item = item->newItem;
-        if (new_item != nullptr && new_item->iconBuf && new_item->iconSize) {
+        if (new_item->iconBuf && new_item->iconSize) {
             auto buf = (u8*)new_item->iconBuf;
             icon = RefCountedTexture::DecodePngTexture({buf, buf + new_item->iconSize});
         } else {
@@ -140,7 +144,7 @@ SaveDialogState::SaveDialogState(const OrbisSaveDataDialogParam& param) {
                 icon = RefCountedTexture::DecodePngFile(src_icon);
             }
         }
-        if (new_item != nullptr && new_item->title != nullptr) {
+        if (new_item->title != nullptr) {
             title = std::string{new_item->title};
         }
 
@@ -349,8 +353,11 @@ void SaveDialogUi::Finish(ButtonId buttonId, Result r) {
         result->result = r;
         result->button_id = buttonId;
         result->user_data = this->state->user_data;
-        if (state && state->mode != SaveDataDialogMode::LIST && !state->save_list.empty()) {
-            result->dir_name = state->save_list.front().dir_name;
+        if (state) {
+            if (state->mode != SaveDataDialogMode::LIST && !state->save_list.empty()) {
+                result->dir_name = state->save_list.front().dir_name;
+            }
+            result->has_item = state->mode == SaveDataDialogMode::LIST || !state->save_list.empty();
         }
     }
     if (status) {

src/core/libraries/save_data/dialog/savedatadialog_ui.h

@@ -201,6 +201,7 @@ struct SaveDialogResult {
     std::string dir_name{};
     PSF param{};
     void* user_data{};
+    bool has_item{false};
 
     void CopyTo(OrbisSaveDataDialogResult& result) const;
 };

src/core/libraries/save_data/save_backup.cpp

@@ -18,6 +18,7 @@
 constexpr std::string_view sce_sys = "sce_sys";               // system folder inside save
 constexpr std::string_view backup_dir = "sce_backup";         // backup folder
 constexpr std::string_view backup_dir_tmp = "sce_backup_tmp"; // in-progress backup folder
+constexpr std::string_view backup_dir_old = "sce_backup_old"; // previous backup folder
 
 namespace fs = std::filesystem;
 
@@ -26,6 +27,8 @@ namespace Libraries::SaveData::Backup {
 static std::jthread g_backup_thread;
 static std::counting_semaphore g_backup_thread_semaphore{0};
 
+static std::mutex g_backup_running_mutex;
+
 static std::mutex g_backup_queue_mutex;
 static std::deque<BackupRequest> g_backup_queue;
 static std::deque<BackupRequest> g_result_queue;
@@ -34,38 +37,44 @@ static std::atomic_int g_backup_progress = 0;
 static std::atomic g_backup_status = WorkerStatus::NotStarted;
 
 static void backup(const std::filesystem::path& dir_name) {
+    std::unique_lock lk{g_backup_running_mutex};
     if (!fs::exists(dir_name)) {
         return;
     }
+
+    const auto backup_dir = dir_name / ::backup_dir;
+    const auto backup_dir_tmp = dir_name / ::backup_dir_tmp;
+    const auto backup_dir_old = dir_name / ::backup_dir_old;
+
+    fs::remove_all(backup_dir_tmp);
+    fs::remove_all(backup_dir_old);
+
     std::vector<std::filesystem::path> backup_files;
     for (const auto& entry : fs::directory_iterator(dir_name)) {
         const auto filename = entry.path().filename();
-        if (filename != backup_dir && filename != backup_dir_tmp) {
+        if (filename != backup_dir) {
             backup_files.push_back(entry.path());
         }
     }
-    const auto backup_dir = dir_name / ::backup_dir;
-    const auto backup_dir_tmp = dir_name / ::backup_dir_tmp;
 
     g_backup_progress = 0;
 
     int total_count = static_cast<int>(backup_files.size());
     int current_count = 0;
 
-    fs::remove_all(backup_dir_tmp);
     fs::create_directory(backup_dir_tmp);
     for (const auto& file : backup_files) {
         fs::copy(file, backup_dir_tmp / file.filename(), fs::copy_options::recursive);
         current_count++;
         g_backup_progress = current_count * 100 / total_count;
     }
-    bool has_existing = fs::exists(backup_dir);
-    if (has_existing) {
-        fs::rename(backup_dir, dir_name / "sce_backup_old");
+    bool has_existing_backup = fs::exists(backup_dir);
+    if (has_existing_backup) {
+        fs::rename(backup_dir, backup_dir_old);
     }
     fs::rename(backup_dir_tmp, backup_dir);
-    if (has_existing) {
-        fs::remove_all(dir_name / "sce_backup_old");
+    if (has_existing_backup) {
+        fs::remove_all(backup_dir_old);
     }
 }
 
@@ -84,7 +93,11 @@ static void BackupThreadBody() {
         }
         g_backup_status = WorkerStatus::Running;
         LOG_INFO(Lib_SaveData, "Backing up the following directory: {}", req.save_path.string());
-        backup(req.save_path);
+        try {
+            backup(req.save_path);
+        } catch (const std::filesystem::filesystem_error& err) {
+            LOG_ERROR(Lib_SaveData, "Failed to backup {}: {}", req.save_path.string(), err.what());
+        }
         LOG_DEBUG(Lib_SaveData, "Backing up the following directory: {} finished",
                   req.save_path.string());
         {
@@ -146,6 +159,7 @@ bool NewRequest(OrbisUserServiceUserId user_id, std::string_view title_id,
 
 bool Restore(const std::filesystem::path& save_path) {
     LOG_INFO(Lib_SaveData, "Restoring backup for {}", save_path.string());
+    std::unique_lock lk{g_backup_running_mutex};
     if (!fs::exists(save_path) || !fs::exists(save_path / backup_dir)) {
         return false;
     }

src/core/libraries/save_data/save_backup.h

@@ -4,6 +4,7 @@
 #pragma once
 
 #include <filesystem>
+#include <optional>
 
 #include "common/types.h"
 

src/core/libraries/save_data/savedata.cpp

@@ -308,7 +308,9 @@ static std::array<std::optional<SaveInstance>, 16> g_mount_slots;
 static void initialize() {
     g_initialized = true;
     static auto* param_sfo = Common::Singleton<PSF>::Instance();
-    g_game_serial = std::string(*param_sfo->GetString("CONTENT_ID"), 7, 9);
+    const auto content_id = param_sfo->GetString("CONTENT_ID");
+    ASSERT_MSG(content_id.has_value(), "Failed to get CONTENT_ID");
+    g_game_serial = std::string(*content_id, 7, 9);
 }
 
 // game_00other | game*other
@@ -479,9 +481,9 @@ static Error Umount(const OrbisSaveDataMountPoint* mountPoint, bool call_backup
 
 void OrbisSaveDataParam::FromSFO(const PSF& sfo) {
     memset(this, 0, sizeof(OrbisSaveDataParam));
-    title.FromString(*sfo.GetString(SaveParams::MAINTITLE));
-    subTitle.FromString(*sfo.GetString(SaveParams::SUBTITLE));
-    detail.FromString(*sfo.GetString(SaveParams::DETAIL));
+    title.FromString(sfo.GetString(SaveParams::MAINTITLE).value_or("Unknown"));
+    subTitle.FromString(sfo.GetString(SaveParams::SUBTITLE).value_or(""));
+    detail.FromString(sfo.GetString(SaveParams::DETAIL).value_or(""));
     userParam = sfo.GetInteger(SaveParams::SAVEDATA_LIST_PARAM).value_or(0);
     const auto time_since_epoch = sfo.GetLastWrite().time_since_epoch();
     mtime = chrono::duration_cast<chrono::seconds>(time_since_epoch).count();
@@ -1019,7 +1021,7 @@ Error PS4_SYSV_ABI sceSaveDataGetParam(const OrbisSaveDataMountPoint* mountPoint
         } else {
             UNREACHABLE();
         }
-        const size_t s = param_sfo->GetString(key)->copy(param, paramBufSize - 1);
+        const size_t s = param_sfo->GetString(key).value_or("").copy(param, paramBufSize - 1);
         param[s] = '\0'; // null terminate
         if (gotSize != nullptr) {
             *gotSize = s + 1;

src/emulator.cpp

@@ -102,7 +102,9 @@ void Emulator::Run(const std::filesystem::path& file) {
                 auto* param_sfo = Common::Singleton<PSF>::Instance();
                 const bool success = param_sfo->Open(sce_sys_folder / "param.sfo");
                 ASSERT_MSG(success, "Failed to open param.sfo");
-                id = std::string(*param_sfo->GetString("CONTENT_ID"), 7, 9);
+                const auto content_id = param_sfo->GetString("CONTENT_ID");
+                ASSERT_MSG(content_id.has_value(), "Failed to get CONTENT_ID");
+                id = std::string(*content_id, 7, 9);
                 Libraries::NpTrophy::game_serial = id;
                 const auto trophyDir =
                     Common::FS::GetUserPath(Common::FS::PathType::MetaDataDir) / id / "TrophyFiles";
@@ -115,10 +117,10 @@ void Emulator::Run(const std::filesystem::path& file) {
 #ifdef ENABLE_QT_GUI
                 MemoryPatcher::g_game_serial = id;
 #endif
-                title = *param_sfo->GetString("TITLE");
+                title = param_sfo->GetString("TITLE").value_or("Unknown title");
                 LOG_INFO(Loader, "Game id: {} Title: {}", id, title);
                 u32 fw_version = param_sfo->GetInteger("SYSTEM_VER").value_or(0x4700000);
-                app_version = *param_sfo->GetString("APP_VER");
+                app_version = param_sfo->GetString("APP_VER").value_or("Unknown version");
                 LOG_INFO(Loader, "Fw: {:#x} App Version: {}", fw_version, app_version);
             } else if (entry.path().filename() == "playgo-chunk.dat") {
                 auto* playgo = Common::Singleton<PlaygoFile>::Instance();

src/qt_gui/game_info.h

@@ -32,16 +32,31 @@ public:
             QString iconpath = QString::fromStdString(game.icon_path);
             game.icon = QImage(iconpath);
             game.pic_path = game.path + "/sce_sys/pic1.png";
-            game.name = *psf.GetString("TITLE");
-            game.serial = *psf.GetString("TITLE_ID");
-            game.region =
-                GameListUtils::GetRegion(psf.GetString("CONTENT_ID")->at(0)).toStdString();
-            u32 fw_int = *psf.GetInteger("SYSTEM_VER");
-            QString fw = QString::number(fw_int, 16);
-            QString fw_ = fw.length() > 7 ? QString::number(fw_int, 16).left(3).insert(2, '.')
-                                          : fw.left(3).insert(1, '.');
-            game.fw = (fw_int == 0) ? "0.00" : fw_.toStdString();
-            game.version = *psf.GetString("APP_VER");
+            if (const auto title = psf.GetString("TITLE"); title.has_value()) {
+                game.name = *title;
+            }
+            if (const auto title_id = psf.GetString("TITLE_ID"); title_id.has_value()) {
+                game.serial = *title_id;
+            }
+            if (const auto content_id = psf.GetString("CONTENT_ID");
+                content_id.has_value() && !content_id->empty()) {
+                game.region = GameListUtils::GetRegion(content_id->at(0)).toStdString();
+            }
+            if (const auto fw_int_opt = psf.GetInteger("SYSTEM_VER"); fw_int_opt.has_value()) {
+                auto fw_int = *fw_int_opt;
+                if (fw_int == 0) {
+                    game.fw = "0.00";
+                } else {
+                    QString fw = QString::number(fw_int, 16);
+                    QString fw_ = fw.length() > 7
+                                      ? QString::number(fw_int, 16).left(3).insert(2, '.')
+                                      : fw.left(3).insert(1, '.');
+                    game.fw = fw_.toStdString();
+                }
+            }
+            if (auto app_ver = psf.GetString("APP_VER"); app_ver.has_value()) {
+                game.version = *app_ver;
+            }
         }
         return game;
     }

src/qt_gui/gui_context_menus.h

@@ -96,25 +96,37 @@ public:
                     QTableWidgetItem* valueItem;
                     switch (entry.param_fmt) {
                     case PSFEntryFmt::Binary: {
-
-                        const auto bin = *psf.GetBinary(entry.key);
-                        std::string text;
-                        text.reserve(bin.size() * 2);
-                        for (const auto& c : bin) {
-                            static constexpr char hex[] = "0123456789ABCDEF";
-                            text.push_back(hex[c >> 4 & 0xF]);
-                            text.push_back(hex[c & 0xF]);
+                        const auto bin = psf.GetBinary(entry.key);
+                        if (!bin.has_value()) {
+                            valueItem = new QTableWidgetItem(QString("Unknown"));
+                        } else {
+                            std::string text;
+                            text.reserve(bin->size() * 2);
+                            for (const auto& c : *bin) {
+                                static constexpr char hex[] = "0123456789ABCDEF";
+                                text.push_back(hex[c >> 4 & 0xF]);
+                                text.push_back(hex[c & 0xF]);
+                            }
+                            valueItem = new QTableWidgetItem(QString::fromStdString(text));
                         }
-                        valueItem = new QTableWidgetItem(QString::fromStdString(text));
                     } break;
                     case PSFEntryFmt::Text: {
-                        auto text = *psf.GetString(entry.key);
-                        valueItem = new QTableWidgetItem(QString::fromStdString(std::string{text}));
+                        auto text = psf.GetString(entry.key);
+                        if (!text.has_value()) {
+                            valueItem = new QTableWidgetItem(QString("Unknown"));
+                        } else {
+                            valueItem =
+                                new QTableWidgetItem(QString::fromStdString(std::string{*text}));
+                        }
                     } break;
                     case PSFEntryFmt::Integer: {
-                        auto integer = *psf.GetInteger(entry.key);
-                        valueItem =
-                            new QTableWidgetItem(QString("0x") + QString::number(integer, 16));
+                        auto integer = psf.GetInteger(entry.key);
+                        if (!integer.has_value()) {
+                            valueItem = new QTableWidgetItem(QString("Unknown"));
+                        } else {
+                            valueItem =
+                                new QTableWidgetItem(QString("0x") + QString::number(*integer, 16));
+                        }
                     } break;
                     }
 

src/qt_gui/main_window.cpp

@@ -636,9 +636,19 @@ void MainWindow::InstallDragDropPkg(std::filesystem::path file, int pkgNum, int
             QMessageBox msgBox;
             msgBox.setWindowTitle(tr("PKG Extraction"));
 
-            psf.Open(pkg.sfo);
+            if (!psf.Open(pkg.sfo)) {
+                QMessageBox::critical(this, tr("PKG ERROR"),
+                                      "Could not read SFO. Check log for details");
+                return;
+            }
 
-            std::string content_id{*psf.GetString("CONTENT_ID")};
+            std::string content_id;
+            if (auto value = psf.GetString("CONTENT_ID"); value.has_value()) {
+                content_id = std::string{*value};
+            } else {
+                QMessageBox::critical(this, tr("PKG ERROR"), "PSF file there is no CONTENT_ID");
+                return;
+            }
             std::string entitlement_label = Common::SplitString(content_id, '-')[2];
 
             auto addon_extract_path = Common::FS::GetUserPath(Common::FS::PathType::AddonsDir) /
@@ -647,11 +657,21 @@ void MainWindow::InstallDragDropPkg(std::filesystem::path file, int pkgNum, int
             auto category = psf.GetString("CATEGORY");
 
             if (pkgType.contains("PATCH")) {
-                QString pkg_app_version =
-                    QString::fromStdString(std::string{*psf.GetString("APP_VER")});
+                QString pkg_app_version;
+                if (auto app_ver = psf.GetString("APP_VER"); app_ver.has_value()) {
+                    pkg_app_version = QString::fromStdString(std::string{*app_ver});
+                } else {
+                    QMessageBox::critical(this, tr("PKG ERROR"), "PSF file there is no APP_VER");
+                    return;
+                }
                 psf.Open(extract_path / "sce_sys" / "param.sfo");
-                QString game_app_version =
-                    QString::fromStdString(std::string{*psf.GetString("APP_VER")});
+                QString game_app_version;
+                if (auto app_ver = psf.GetString("APP_VER"); app_ver.has_value()) {
+                    game_app_version = QString::fromStdString(std::string{*app_ver});
+                } else {
+                    QMessageBox::critical(this, tr("PKG ERROR"), "PSF file there is no APP_VER");
+                    return;
+                }
                 double appD = game_app_version.toDouble();
                 double pkgD = pkg_app_version.toDouble();
                 if (pkgD == appD) {

src/qt_gui/pkg_viewer.cpp

@@ -110,12 +110,16 @@ void PKGViewer::ProcessPKGInfo() {
 #endif
         package.Open(path);
         psf.Open(package.sfo);
-        QString title_name = QString::fromStdString(std::string{*psf.GetString("TITLE")});
-        QString title_id = QString::fromStdString(std::string{*psf.GetString("TITLE_ID")});
-        QString app_type = game_list_util.GetAppType(*psf.GetInteger("APP_TYPE"));
-        QString app_version = QString::fromStdString(std::string{*psf.GetString("APP_VER")});
-        QString title_category = QString::fromStdString(std::string{*psf.GetString("CATEGORY")});
-        QString pkg_size = game_list_util.FormatSize(package.GetPkgHeader().pkg_size);
+        QString title_name =
+            QString::fromStdString(std::string{psf.GetString("TITLE").value_or("Unknown")});
+        QString title_id =
+            QString::fromStdString(std::string{psf.GetString("TITLE_ID").value_or("Unknown")});
+        QString app_type = GameListUtils::GetAppType(psf.GetInteger("APP_TYPE").value_or(0));
+        QString app_version =
+            QString::fromStdString(std::string{psf.GetString("APP_VER").value_or("Unknown")});
+        QString title_category =
+            QString::fromStdString(std::string{psf.GetString("CATEGORY").value_or("Unknown")});
+        QString pkg_size = GameListUtils::FormatSize(package.GetPkgHeader().pkg_size);
         pkg_content_flag = package.GetPkgHeader().pkg_content_flags;
         QString flagss = "";
         for (const auto& flag : package.flagNames) {
@@ -126,11 +130,17 @@ void PKGViewer::ProcessPKGInfo() {
             }
         }
 
-        u32 fw_int = *psf.GetInteger("SYSTEM_VER");
-        QString fw = QString::number(fw_int, 16);
-        QString fw_ = fw.length() > 7 ? QString::number(fw_int, 16).left(3).insert(2, '.')
+        QString fw_ = "Unknown";
+        if (const auto fw_int_opt = psf.GetInteger("SYSTEM_VER"); fw_int_opt.has_value()) {
+            const u32 fw_int = *fw_int_opt;
+            if (fw_int == 0) {
+                fw_ = "0.00";
+            } else {
+                QString fw = QString::number(fw_int, 16);
+                fw_ = fw.length() > 7 ? QString::number(fw_int, 16).left(3).insert(2, '.')
                                       : fw.left(3).insert(1, '.');
-        fw_ = (fw_int == 0) ? "0.00" : fw_;
+            }
+        }
         char region = package.GetPkgHeader().pkg_content_id[0];
         QString pkg_info = "";
         if (title_category == "gd" && !flagss.contains("PATCH")) {