mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2026-08-19 14:14:04 +00:00
Hard reset app (#3182)
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Pezsma
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/*
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* Copyright (C) 2026 Pezsma
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for 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; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "ui_hard_reset.hpp"
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#include "portapack.hpp"
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#include "file.hpp"
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#include "file_path.hpp"
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#include "ui_touch_calibration.hpp"
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#include "ui_external_items_menu_loader.hpp"
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#include "app_settings.hpp"
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using namespace portapack;
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namespace pmem = portapack::persistent_memory;
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namespace ui::external_app::hard_reset {
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HardResetView::HardResetView(ui::NavigationView& nav)
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: nav_(nav) {
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add_children({&chk_settings_file,
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&chk_bad_apps,
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&chk_pmem,
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&txt_settings_file_count,
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&txt_bad_apps_count,
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&btn_yes,
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&btn_no,
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&text,
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&txt_wait});
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txt_wait.set_style(Theme::getInstance()->warning_dark);
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btn_yes.on_select = [this](Button&) {
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{ // to free painter after draw
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Painter painter;
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txt_wait.hidden(false);
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text.hidden(true);
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painter.fill_rectangle(text.screen_rect(), this->style().background);
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txt_wait.paint(painter);
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}
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if (chk_settings_file.value()) {
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clear_settings_folder();
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}
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if (chk_bad_apps.value()) {
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delete_bad_apps(apps_dir);
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}
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if (chk_pmem.value()) {
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pmem::cache::defaults();
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StatusRefreshMessage message{};
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EventDispatcher::send_message(message);
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nav_.replace<TouchCalibrationView>();
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} else {
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nav_.pop();
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}
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};
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btn_no.on_select = [this](Button&) {
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nav_.pop();
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};
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txt_settings_file_count.set_style(Theme::getInstance()->fg_magenta);
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txt_bad_apps_count.set_style(Theme::getInstance()->fg_magenta);
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signal_token_tick_second = rtc_time::signal_tick_second += [this]() {
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this->calculate();
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rtc_time::signal_tick_second -= signal_token_tick_second;
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};
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}
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HardResetView::~HardResetView() {
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rtc_time::signal_tick_second -= signal_token_tick_second;
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}
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void HardResetView::calculate() {
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settings_file_count = count_ini_files_in_directory(settings_dir);
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txt_settings_file_count.set(to_string_dec_uint(settings_file_count));
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bad_apps_count = count_bad_apps(apps_dir);
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txt_bad_apps_count.set(to_string_dec_uint(bad_apps_count));
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if (settings_file_count > 0) {
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chk_settings_file.set_value(true);
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}
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if (bad_apps_count > 0) {
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chk_bad_apps.set_value(true);
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}
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chk_pmem.set_value(true);
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txt_wait.hidden(true);
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text.set("Warning! Checked items will beerased (bad apps, P.Mem, settings). Uncheck to keep. Touch calibration is required only if P.Mem is reset.");
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}
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void HardResetView::focus() {
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btn_no.focus();
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}
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uint16_t HardResetView::count_ini_files_in_directory(const std::filesystem::path& dir_path) {
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int count = 0;
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for (const auto& entry : std::filesystem::directory_iterator(dir_path, u"*.ini")) {
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if (std::filesystem::is_regular_file(entry.status())) {
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count++;
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}
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}
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return count;
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}
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void HardResetView::delete_ini_files_in_directory(const std::filesystem::path& dir_path) {
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bool found_and_deleted;
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do {
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found_and_deleted = false;
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for (const auto& entry : std::filesystem::directory_iterator(dir_path, u"*.ini")) {
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if (std::filesystem::is_regular_file(entry.status())) {
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auto full_path = dir_path / entry.path().filename();
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delete_file(full_path);
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found_and_deleted = true;
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break; // iterator can become invalid if the dir is modified, so break and restart the loop after deletion
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}
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}
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} while (found_and_deleted);
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}
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void HardResetView::clear_settings_folder() {
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delete_ini_files_in_directory(settings_dir);
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}
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bool HardResetView::is_bad_app(const std::filesystem::path& file_path, bool is_ppma) {
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File app;
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if (app.open(file_path)) {
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return true;
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}
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bool is_bad = false;
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if (is_ppma) {
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application_information_t app_info = {};
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auto readResult = app.read(&app_info, sizeof(application_information_t));
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if (!readResult || readResult.value() != sizeof(application_information_t)) {
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is_bad = true;
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} else if (app_info.header_version != CURRENT_HEADER_VERSION) {
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is_bad = true;
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} else if (VERSION_MD5 != app_info.app_version) {
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is_bad = true;
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} else {
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// --- CHECKSUM VALIDATION ---
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// Similar to run_external_app: read through the file and calculate the checksum
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app.seek(0);
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uint32_t checksum = 0;
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uint8_t buffer[512]; // 512-byte buffer to conserve RAM
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while (true) {
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auto res = app.read(buffer, sizeof(buffer));
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if (!res) break;
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checksum += simple_checksum((uint32_t)buffer, res.value());
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if (res.value() < sizeof(buffer)) break; // End of file
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}
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if (checksum != EXT_APP_EXPECTED_CHECKSUM) {
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is_bad = true; // The file body is corrupted / truncated!
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}
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}
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} else {
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// PPMP validation
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standalone_application_information_t app_info = {};
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auto readResult = app.read(&app_info, sizeof(standalone_application_information_t));
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if (!readResult || readResult.value() != sizeof(standalone_application_information_t)) {
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is_bad = true;
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} else if (app_info.header_version > CURRENT_STANDALONE_APPLICATION_API_VERSION) {
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is_bad = true;
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}
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}
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app.close();
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return is_bad;
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}
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uint16_t HardResetView::count_bad_apps(const std::filesystem::path& apps_dir) {
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int bad_count = 0;
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// Check .ppma files
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for (const auto& entry : std::filesystem::directory_iterator(apps_dir, u"*.ppma")) {
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auto file_path = apps_dir / entry.path();
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if (is_bad_app(file_path, true)) {
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bad_count++;
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}
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}
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// Check .ppmp files
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for (const auto& entry : std::filesystem::directory_iterator(apps_dir, u"*.ppmp")) {
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auto file_path = apps_dir / entry.path();
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if (is_bad_app(file_path, false)) {
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bad_count++;
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}
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}
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return bad_count;
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}
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void HardResetView::delete_bad_apps(const std::filesystem::path& apps_dir) {
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// Delete bad .ppma files
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bool deleted_something;
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do {
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deleted_something = false;
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for (const auto& entry : std::filesystem::directory_iterator(apps_dir, u"*.ppma")) {
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auto file_path = apps_dir / entry.path();
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if (is_bad_app(file_path, true)) {
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delete_file(file_path);
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deleted_something = true;
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break;
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}
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}
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} while (deleted_something);
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// Delete bad .ppmp files
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do {
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deleted_something = false;
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for (const auto& entry : std::filesystem::directory_iterator(apps_dir, u"*.ppmp")) {
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auto file_path = apps_dir / entry.path();
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if (is_bad_app(file_path, false)) {
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delete_file(file_path);
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deleted_something = true;
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break;
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}
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}
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} while (deleted_something);
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}
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} // namespace ui::external_app::hard_reset
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