yomichan/ext/bg/js/settings/backup.js

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/*
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* Copyright (C) 2019-2020 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/*global apiOptionsGetFull, apiGetEnvironmentInfo
utilBackend, utilIsolate, utilBackgroundIsolate, utilReadFileArrayBuffer
optionsGetDefault, optionsUpdateVersion
profileOptionsGetDefaultFieldTemplates*/
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// Exporting
let _settingsExportToken = null;
let _settingsExportRevoke = null;
const SETTINGS_EXPORT_CURRENT_VERSION = 0;
function _getSettingsExportDateString(date, dateSeparator, dateTimeSeparator, timeSeparator, resolution) {
const values = [
date.getUTCFullYear().toString(),
dateSeparator,
(date.getUTCMonth() + 1).toString().padStart(2, '0'),
dateSeparator,
date.getUTCDate().toString().padStart(2, '0'),
dateTimeSeparator,
date.getUTCHours().toString().padStart(2, '0'),
timeSeparator,
date.getUTCMinutes().toString().padStart(2, '0'),
timeSeparator,
date.getUTCSeconds().toString().padStart(2, '0')
];
return values.slice(0, resolution * 2 - 1).join('');
}
async function _getSettingsExportData(date) {
const optionsFull = await apiOptionsGetFull();
const environment = await apiGetEnvironmentInfo();
const fieldTemplatesDefault = profileOptionsGetDefaultFieldTemplates();
// Format options
for (const {options} of optionsFull.profiles) {
if (options.anki.fieldTemplates === fieldTemplatesDefault || !options.anki.fieldTemplates) {
delete options.anki.fieldTemplates; // Default
}
}
const data = {
version: SETTINGS_EXPORT_CURRENT_VERSION,
date: _getSettingsExportDateString(date, '-', ' ', ':', 6),
url: chrome.runtime.getURL('/'),
manifest: chrome.runtime.getManifest(),
environment,
userAgent: navigator.userAgent,
options: optionsFull
};
return data;
}
function _saveBlob(blob, fileName) {
if (typeof navigator === 'object' && typeof navigator.msSaveBlob === 'function') {
if (navigator.msSaveBlob(blob)) {
return;
}
}
const blobUrl = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = blobUrl;
a.download = fileName;
a.rel = 'noopener';
a.target = '_blank';
const revoke = () => {
URL.revokeObjectURL(blobUrl);
a.href = '';
_settingsExportRevoke = null;
};
_settingsExportRevoke = revoke;
a.dispatchEvent(new MouseEvent('click'));
setTimeout(revoke, 60000);
}
async function _onSettingsExportClick() {
if (_settingsExportRevoke !== null) {
_settingsExportRevoke();
_settingsExportRevoke = null;
}
const date = new Date(Date.now());
const token = {};
_settingsExportToken = token;
const data = await _getSettingsExportData(date);
if (_settingsExportToken !== token) {
// A new export has been started
return;
}
_settingsExportToken = null;
const fileName = `yomichan-settings-${_getSettingsExportDateString(date, '-', '-', '-', 6)}.json`;
const blob = new Blob([JSON.stringify(data, null, 4)], {type: 'application/json'});
_saveBlob(blob, fileName);
}
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// Importing
async function _settingsImportSetOptionsFull(optionsFull) {
return utilIsolate(await utilBackend().setFullOptions(
utilBackgroundIsolate(optionsFull)
));
}
function _showSettingsImportError(error) {
logError(error);
document.querySelector('#settings-import-error-modal-message').textContent = `${error}`;
$('#settings-import-error-modal').modal('show');
}
async function _showSettingsImportWarnings(warnings) {
const modalNode = $('#settings-import-warning-modal');
const buttons = document.querySelectorAll('.settings-import-warning-modal-import-button');
const messageContainer = document.querySelector('#settings-import-warning-modal-message');
if (modalNode.length === 0 || buttons.length === 0 || messageContainer === null) {
return {result: false};
}
// Set message
const fragment = document.createDocumentFragment();
for (const warning of warnings) {
const node = document.createElement('li');
node.textContent = `${warning}`;
fragment.appendChild(node);
}
messageContainer.textContent = '';
messageContainer.appendChild(fragment);
// Show modal
modalNode.modal('show');
// Wait for modal to close
return new Promise((resolve) => {
const onButtonClick = (e) => {
e.preventDefault();
complete({
result: true,
sanitize: e.currentTarget.dataset.importSanitize === 'true'
});
modalNode.modal('hide');
};
const onModalHide = () => {
complete({result: false});
};
let completed = false;
const complete = (result) => {
if (completed) { return; }
completed = true;
modalNode.off('hide.bs.modal', onModalHide);
for (const button of buttons) {
button.removeEventListener('click', onButtonClick, false);
}
resolve(result);
};
// Hook events
modalNode.on('hide.bs.modal', onModalHide);
for (const button of buttons) {
button.addEventListener('click', onButtonClick, false);
}
});
}
function _isLocalhostUrl(urlString) {
try {
const url = new URL(urlString);
switch (url.hostname.toLowerCase()) {
case 'localhost':
case '127.0.0.1':
case '[::1]':
switch (url.protocol.toLowerCase()) {
case 'http:':
case 'https:':
return true;
}
break;
}
} catch (e) {
// NOP
}
return false;
}
function _settingsImportSanitizeProfileOptions(options, dryRun) {
const warnings = [];
const anki = options.anki;
if (isObject(anki)) {
const fieldTemplates = anki.fieldTemplates;
if (typeof fieldTemplates === 'string') {
warnings.push('anki.fieldTemplates contains a non-default value');
if (!dryRun) {
delete anki.fieldTemplates;
}
}
const server = anki.server;
if (typeof server === 'string' && server.length > 0 && !_isLocalhostUrl(server)) {
warnings.push('anki.server uses a non-localhost URL');
if (!dryRun) {
delete anki.server;
}
}
}
const audio = options.audio;
if (isObject(audio)) {
const customSourceUrl = audio.customSourceUrl;
if (typeof customSourceUrl === 'string' && customSourceUrl.length > 0 && !_isLocalhostUrl(customSourceUrl)) {
warnings.push('audio.customSourceUrl uses a non-localhost URL');
if (!dryRun) {
delete audio.customSourceUrl;
}
}
}
return warnings;
}
function _settingsImportSanitizeOptions(optionsFull, dryRun) {
const warnings = new Set();
const profiles = optionsFull.profiles;
if (Array.isArray(profiles)) {
for (const profile of profiles) {
if (!isObject(profile)) { continue; }
const options = profile.options;
if (!isObject(options)) { continue; }
const warnings2 = _settingsImportSanitizeProfileOptions(options, dryRun);
for (const warning of warnings2) {
warnings.add(warning);
}
}
}
return warnings;
}
function _utf8Decode(arrayBuffer) {
try {
return new TextDecoder('utf-8').decode(arrayBuffer);
} catch (e) {
const binaryString = String.fromCharCode.apply(null, new Uint8Array(arrayBuffer));
return decodeURIComponent(escape(binaryString));
}
}
async function _importSettingsFile(file) {
const dataString = _utf8Decode(await utilReadFileArrayBuffer(file));
const data = JSON.parse(dataString);
// Type check
if (!isObject(data)) {
throw new Error(`Invalid data type: ${typeof data}`);
}
// Version check
const version = data.version;
if (!(
typeof version === 'number' &&
Number.isFinite(version) &&
version === Math.floor(version)
)) {
throw new Error(`Invalid version: ${version}`);
}
if (!(
version >= 0 &&
version <= SETTINGS_EXPORT_CURRENT_VERSION
)) {
throw new Error(`Unsupported version: ${version}`);
}
// Verify options exists
let optionsFull = data.options;
if (!isObject(optionsFull)) {
throw new Error(`Invalid options type: ${typeof optionsFull}`);
}
// Upgrade options
optionsFull = optionsUpdateVersion(optionsFull, {});
// Check for warnings
const sanitizationWarnings = _settingsImportSanitizeOptions(optionsFull, true);
// Show sanitization warnings
if (sanitizationWarnings.size > 0) {
const {result, sanitize} = await _showSettingsImportWarnings(sanitizationWarnings);
if (!result) { return; }
if (sanitize !== false) {
_settingsImportSanitizeOptions(optionsFull, false);
}
}
// Assign options
await _settingsImportSetOptionsFull(optionsFull);
// Reload settings page
window.location.reload();
}
function _onSettingsImportClick() {
document.querySelector('#settings-import-file').click();
}
function _onSettingsImportFileChange(e) {
const files = e.target.files;
if (files.length === 0) { return; }
const file = files[0];
e.target.value = null;
_importSettingsFile(file).catch(_showSettingsImportError);
}
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// Resetting
function _onSettingsResetClick() {
$('#settings-reset-modal').modal('show');
}
async function _onSettingsResetConfirmClick() {
$('#settings-reset-modal').modal('hide');
// Get default options
const optionsFull = optionsGetDefault();
// Assign options
await _settingsImportSetOptionsFull(optionsFull);
// Reload settings page
window.location.reload();
}
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// Setup
window.addEventListener('DOMContentLoaded', () => {
document.querySelector('#settings-export').addEventListener('click', _onSettingsExportClick, false);
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document.querySelector('#settings-import').addEventListener('click', _onSettingsImportClick, false);
document.querySelector('#settings-import-file').addEventListener('change', _onSettingsImportFileChange, false);
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document.querySelector('#settings-reset').addEventListener('click', _onSettingsResetClick, false);
document.querySelector('#settings-reset-modal-confirm').addEventListener('click', _onSettingsResetConfirmClick, false);
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}, false);