/* * Copyright (C) 2016-2020 Alex Yatskov <alex@foosoft.net> * 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. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */ class Backend { constructor() { this.translator = new Translator(); this.anki = new AnkiNull(); this.mecab = new Mecab(); this.clipboardMonitor = new ClipboardMonitor(); this.options = null; this.optionsSchema = null; this.optionsContext = { depth: 0, url: window.location.href }; this.isPreparedResolve = null; this.isPreparedPromise = new Promise((resolve) => (this.isPreparedResolve = resolve)); this.clipboardPasteTarget = document.querySelector('#clipboard-paste-target'); this.popupWindow = null; this.apiForwarder = new BackendApiForwarder(); } async prepare() { await this.translator.prepare(); this.optionsSchema = await requestJson(chrome.runtime.getURL('/bg/data/options-schema.json'), 'GET'); this.options = await optionsLoad(); try { this.options = JsonSchema.getValidValueOrDefault(this.optionsSchema, this.options); } catch (e) { // This shouldn't happen, but catch errors just in case of bugs logError(e); } this.onOptionsUpdated('background'); if (isObject(chrome.commands) && isObject(chrome.commands.onCommand)) { chrome.commands.onCommand.addListener((command) => this._runCommand(command)); } if (isObject(chrome.tabs) && isObject(chrome.tabs.onZoomChange)) { chrome.tabs.onZoomChange.addListener((info) => this._onZoomChange(info)); } chrome.runtime.onMessage.addListener(this.onMessage.bind(this)); const options = this.getOptionsSync(this.optionsContext); if (options.general.showGuide) { chrome.tabs.create({url: chrome.runtime.getURL('/bg/guide.html')}); } this.isPreparedResolve(); this.isPreparedResolve = null; this.isPreparedPromise = null; this.clipboardMonitor.onClipboardText = (text) => this._onClipboardText(text); } onOptionsUpdated(source) { this.applyOptions(); const callback = () => this.checkLastError(chrome.runtime.lastError); chrome.tabs.query({}, (tabs) => { for (const tab of tabs) { chrome.tabs.sendMessage(tab.id, {action: 'optionsUpdate', params: {source}}, callback); } }); } onMessage({action, params}, sender, callback) { const handler = Backend._messageHandlers.get(action); if (typeof handler !== 'function') { return false; } try { const promise = handler(this, params, sender); promise.then( (result) => callback({result}), (error) => callback({error: errorToJson(error)}) ); return true; } catch (error) { callback({error: errorToJson(error)}); return false; } } _onClipboardText(text) { this._onCommandSearch({mode: 'popup', query: text}); } _onZoomChange({tabId, oldZoomFactor, newZoomFactor}) { const callback = () => this.checkLastError(chrome.runtime.lastError); chrome.tabs.sendMessage(tabId, {action: 'zoomChanged', params: {oldZoomFactor, newZoomFactor}}, callback); } applyOptions() { const options = this.getOptionsSync(this.optionsContext); if (!options.general.enable) { this.setExtensionBadgeBackgroundColor('#555555'); this.setExtensionBadgeText('off'); } else if (!dictConfigured(options)) { this.setExtensionBadgeBackgroundColor('#f0ad4e'); this.setExtensionBadgeText('!'); } else { this.setExtensionBadgeText(''); } this.anki = options.anki.enable ? new AnkiConnect(options.anki.server) : new AnkiNull(); if (options.parsing.enableMecabParser) { this.mecab.startListener(); } else { this.mecab.stopListener(); } if (options.general.enableClipboardPopups) { this.clipboardMonitor.start(); } else { this.clipboardMonitor.stop(); } } async getOptionsSchema() { if (this.isPreparedPromise !== null) { await this.isPreparedPromise; } return this.optionsSchema; } async getFullOptions() { if (this.isPreparedPromise !== null) { await this.isPreparedPromise; } return this.options; } async setFullOptions(options) { if (this.isPreparedPromise !== null) { await this.isPreparedPromise; } try { this.options = JsonSchema.getValidValueOrDefault(this.optionsSchema, utilIsolate(options)); } catch (e) { // This shouldn't happen, but catch errors just in case of bugs logError(e); } } async getOptions(optionsContext) { if (this.isPreparedPromise !== null) { await this.isPreparedPromise; } return this.getOptionsSync(optionsContext); } getOptionsSync(optionsContext) { return this.getProfileSync(optionsContext).options; } getProfileSync(optionsContext) { const profiles = this.options.profiles; if (typeof optionsContext.index === 'number') { return profiles[optionsContext.index]; } const profile = this.getProfileFromContext(optionsContext); return profile !== null ? profile : this.options.profiles[this.options.profileCurrent]; } getProfileFromContext(optionsContext) { for (const profile of this.options.profiles) { const conditionGroups = profile.conditionGroups; if (conditionGroups.length > 0 && Backend.testConditionGroups(conditionGroups, optionsContext)) { return profile; } } return null; } static testConditionGroups(conditionGroups, data) { if (conditionGroups.length === 0) { return false; } for (const conditionGroup of conditionGroups) { const conditions = conditionGroup.conditions; if (conditions.length > 0 && Backend.testConditions(conditions, data)) { return true; } } return false; } static testConditions(conditions, data) { for (const condition of conditions) { if (!conditionsTestValue(profileConditionsDescriptor, condition.type, condition.operator, condition.value, data)) { return false; } } return true; } setExtensionBadgeBackgroundColor(color) { if (typeof chrome.browserAction.setBadgeBackgroundColor === 'function') { chrome.browserAction.setBadgeBackgroundColor({color}); } } setExtensionBadgeText(text) { if (typeof chrome.browserAction.setBadgeText === 'function') { chrome.browserAction.setBadgeText({text}); } } checkLastError() { // NOP } _runCommand(command, params) { const handler = Backend._commandHandlers.get(command); if (typeof handler !== 'function') { return false; } handler(this, params); return true; } // Message handlers _onApiOptionsSchemaGet() { return this.getOptionsSchema(); } _onApiOptionsGet({optionsContext}) { return this.getOptions(optionsContext); } _onApiOptionsGetFull() { return this.getFullOptions(); } async _onApiOptionsSet({changedOptions, optionsContext, source}) { const options = await this.getOptions(optionsContext); function getValuePaths(obj) { const valuePaths = []; const nodes = [{obj, path: []}]; while (nodes.length > 0) { const node = nodes.pop(); for (const key of Object.keys(node.obj)) { const path = node.path.concat(key); const obj = node.obj[key]; if (obj !== null && typeof obj === 'object') { nodes.unshift({obj, path}); } else { valuePaths.push([obj, path]); } } } return valuePaths; } function modifyOption(path, value, options) { let pivot = options; for (const key of path.slice(0, -1)) { if (!hasOwn(pivot, key)) { return false; } pivot = pivot[key]; } pivot[path[path.length - 1]] = value; return true; } for (const [value, path] of getValuePaths(changedOptions)) { modifyOption(path, value, options); } await this._onApiOptionsSave({source}); } async _onApiOptionsSave({source}) { const options = await this.getFullOptions(); await optionsSave(options); this.onOptionsUpdated(source); } async _onApiKanjiFind({text, optionsContext}) { const options = await this.getOptions(optionsContext); const definitions = await this.translator.findKanji(text, options); definitions.splice(options.general.maxResults); return definitions; } async _onApiTermsFind({text, details, optionsContext}) { const options = await this.getOptions(optionsContext); const [definitions, length] = await this.translator.findTerms(text, details, options); definitions.splice(options.general.maxResults); return {length, definitions}; } async _onApiTextParse({text, optionsContext}) { const options = await this.getOptions(optionsContext); const results = []; while (text.length > 0) { const term = []; const [definitions, sourceLength] = await this.translator.findTermsInternal( text.substring(0, options.scanning.length), dictEnabledSet(options), {}, options ); if (definitions.length > 0) { dictTermsSort(definitions); const {expression, reading} = definitions[0]; const source = text.substring(0, sourceLength); for (const {text, furigana} of jpDistributeFuriganaInflected(expression, reading, source)) { const reading = jpConvertReading(text, furigana, options.parsing.readingMode); term.push({text, reading}); } text = text.substring(source.length); } else { const reading = jpConvertReading(text[0], null, options.parsing.readingMode); term.push({text: text[0], reading}); text = text.substring(1); } results.push(term); } return results; } async _onApiTextParseMecab({text, optionsContext}) { const options = await this.getOptions(optionsContext); const results = {}; const rawResults = await this.mecab.parseText(text); for (const mecabName in rawResults) { const result = []; for (const parsedLine of rawResults[mecabName]) { for (const {expression, reading, source} of parsedLine) { const term = []; if (expression !== null && reading !== null) { for (const {text, furigana} of jpDistributeFuriganaInflected( expression, jpKatakanaToHiragana(reading), source )) { const reading = jpConvertReading(text, furigana, options.parsing.readingMode); term.push({text, reading}); } } else { const reading = jpConvertReading(source, null, options.parsing.readingMode); term.push({text: source, reading}); } result.push(term); } result.push([{text: '\n'}]); } results[mecabName] = result; } return results; } async _onApiDefinitionAdd({definition, mode, context, optionsContext}) { const options = await this.getOptions(optionsContext); const templates = Backend._getTemplates(options); if (mode !== 'kanji') { await audioInject( definition, options.anki.terms.fields, options.audio.sources, optionsContext ); } if (context && context.screenshot) { await this._injectScreenshot( definition, options.anki.terms.fields, context.screenshot ); } const note = await dictNoteFormat(definition, mode, options, templates); return this.anki.addNote(note); } async _onApiDefinitionsAddable({definitions, modes, optionsContext}) { const options = await this.getOptions(optionsContext); const templates = Backend._getTemplates(options); const states = []; try { const notes = []; for (const definition of definitions) { for (const mode of modes) { const note = await dictNoteFormat(definition, mode, options, templates); notes.push(note); } } const cannotAdd = []; const results = await this.anki.canAddNotes(notes); for (let resultBase = 0; resultBase < results.length; resultBase += modes.length) { const state = {}; for (let modeOffset = 0; modeOffset < modes.length; ++modeOffset) { const index = resultBase + modeOffset; const result = results[index]; const info = {canAdd: result}; state[modes[modeOffset]] = info; if (!result) { cannotAdd.push([notes[index], info]); } } states.push(state); } if (cannotAdd.length > 0) { const noteIdsArray = await this.anki.findNoteIds(cannotAdd.map((e) => e[0])); for (let i = 0, ii = Math.min(cannotAdd.length, noteIdsArray.length); i < ii; ++i) { const noteIds = noteIdsArray[i]; if (noteIds.length > 0) { cannotAdd[i][1].noteId = noteIds[0]; } } } } catch (e) { // NOP } return states; } async _onApiNoteView({noteId}) { return this.anki.guiBrowse(`nid:${noteId}`); } async _onApiTemplateRender({template, data, dynamic}) { return ( dynamic ? handlebarsRenderDynamic(template, data) : handlebarsRenderStatic(template, data) ); } async _onApiCommandExec({command, params}) { return this._runCommand(command, params); } async _onApiAudioGetUrl({definition, source, optionsContext}) { const options = await this.getOptions(optionsContext); return await audioGetUrl(definition, source, options); } _onApiScreenshotGet({options}, sender) { if (!(sender && sender.tab)) { return Promise.resolve(); } const windowId = sender.tab.windowId; return new Promise((resolve) => { chrome.tabs.captureVisibleTab(windowId, options, (dataUrl) => resolve(dataUrl)); }); } _onApiForward({action, params}, sender) { if (!(sender && sender.tab)) { return Promise.resolve(); } const tabId = sender.tab.id; return new Promise((resolve) => { chrome.tabs.sendMessage(tabId, {action, params}, (response) => resolve(response)); }); } _onApiFrameInformationGet(params, sender) { const frameId = sender.frameId; return Promise.resolve({frameId}); } _onApiInjectStylesheet({css}, sender) { if (!sender.tab) { return Promise.reject(new Error('Invalid tab')); } const tabId = sender.tab.id; const frameId = sender.frameId; const details = { code: css, runAt: 'document_start', cssOrigin: 'user', allFrames: false }; if (typeof frameId === 'number') { details.frameId = frameId; } return new Promise((resolve, reject) => { chrome.tabs.insertCSS(tabId, details, () => { const e = chrome.runtime.lastError; if (e) { reject(new Error(e.message)); } else { resolve(); } }); }); } async _onApiGetEnvironmentInfo() { const browser = await Backend._getBrowser(); const platform = await new Promise((resolve) => chrome.runtime.getPlatformInfo(resolve)); return { browser, platform: { os: platform.os } }; } async _onApiClipboardGet() { /* Notes: document.execCommand('paste') doesn't work on Firefox. This may be a bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1603985 Therefore, navigator.clipboard.readText() is used on Firefox. navigator.clipboard.readText() can't be used in Chrome for two reasons: * Requires page to be focused, else it rejects with an exception. * When the page is focused, Chrome will request clipboard permission, despite already being an extension with clipboard permissions. It effectively asks for the non-extension permission for clipboard access. */ const browser = await Backend._getBrowser(); if (browser === 'firefox' || browser === 'firefox-mobile') { return await navigator.clipboard.readText(); } else { const clipboardPasteTarget = this.clipboardPasteTarget; clipboardPasteTarget.value = ''; clipboardPasteTarget.focus(); document.execCommand('paste'); const result = clipboardPasteTarget.value; clipboardPasteTarget.value = ''; return result; } } async _onApiGetDisplayTemplatesHtml() { const url = chrome.runtime.getURL('/mixed/display-templates.html'); return await requestText(url, 'GET'); } async _onApiGetQueryParserTemplatesHtml() { const url = chrome.runtime.getURL('/bg/query-parser-templates.html'); return await requestText(url, 'GET'); } _onApiGetZoom(params, sender) { if (!sender || !sender.tab) { return Promise.reject(new Error('Invalid tab')); } return new Promise((resolve, reject) => { const tabId = sender.tab.id; if (!( chrome.tabs !== null && typeof chrome.tabs === 'object' && typeof chrome.tabs.getZoom === 'function' )) { // Not supported resolve({zoomFactor: 1.0}); return; } chrome.tabs.getZoom(tabId, (zoomFactor) => { const e = chrome.runtime.lastError; if (e) { reject(new Error(e.message)); } else { resolve({zoomFactor}); } }); }); } // Command handlers async _onCommandSearch(params) { const {mode='existingOrNewTab', query} = params || {}; const options = await this.getOptions(this.optionsContext); const {popupWidth, popupHeight} = options.general; const baseUrl = chrome.runtime.getURL('/bg/search.html'); const queryParams = {mode}; if (query && query.length > 0) { queryParams.query = query; } const queryString = new URLSearchParams(queryParams).toString(); const url = `${baseUrl}?${queryString}`; const isTabMatch = (url2) => { if (url2 === null || !url2.startsWith(baseUrl)) { return false; } const {baseUrl: baseUrl2, queryParams: queryParams2} = parseUrl(url2); return baseUrl2 === baseUrl && (queryParams2.mode === mode || (!queryParams2.mode && mode === 'existingOrNewTab')); }; const openInTab = async () => { const tab = await Backend._findTab(1000, isTabMatch); if (tab !== null) { await Backend._focusTab(tab); if (queryParams.query) { await new Promise((resolve) => chrome.tabs.sendMessage( tab.id, {action: 'searchQueryUpdate', params: {query: queryParams.query}}, resolve )); } return true; } }; switch (mode) { case 'existingOrNewTab': try { if (await openInTab()) { return; } } catch (e) { // NOP } chrome.tabs.create({url}); return; case 'newTab': chrome.tabs.create({url}); return; case 'popup': try { // chrome.windows not supported (e.g. on Firefox mobile) if (!isObject(chrome.windows)) { return; } if (await openInTab()) { return; } // if the previous popup is open in an invalid state, close it if (this.popupWindow !== null) { const callback = () => this.checkLastError(chrome.runtime.lastError); chrome.windows.remove(this.popupWindow.id, callback); } // open new popup this.popupWindow = await new Promise((resolve) => chrome.windows.create( {url, width: popupWidth, height: popupHeight, type: 'popup'}, resolve )); } catch (e) { // NOP } return; } } _onCommandHelp() { chrome.tabs.create({url: 'https://foosoft.net/projects/yomichan/'}); } _onCommandOptions(params) { if (!(params && params.newTab)) { chrome.runtime.openOptionsPage(); } else { const manifest = chrome.runtime.getManifest(); const url = chrome.runtime.getURL(manifest.options_ui.page); chrome.tabs.create({url}); } } async _onCommandToggle() { const optionsContext = { depth: 0, url: window.location.href }; const source = 'popup'; const options = await this.getOptions(optionsContext); options.general.enable = !options.general.enable; await this._onApiOptionsSave({source}); } // Utilities async _injectScreenshot(definition, fields, screenshot) { let usesScreenshot = false; for (const name in fields) { if (fields[name].includes('{screenshot}')) { usesScreenshot = true; break; } } if (!usesScreenshot) { return; } const dateToString = (date) => { const year = date.getUTCFullYear(); const month = date.getUTCMonth().toString().padStart(2, '0'); const day = date.getUTCDate().toString().padStart(2, '0'); const hours = date.getUTCHours().toString().padStart(2, '0'); const minutes = date.getUTCMinutes().toString().padStart(2, '0'); const seconds = date.getUTCSeconds().toString().padStart(2, '0'); return `${year}-${month}-${day}-${hours}-${minutes}-${seconds}`; }; const now = new Date(Date.now()); const filename = `yomichan_browser_screenshot_${definition.reading}_${dateToString(now)}.${screenshot.format}`; const data = screenshot.dataUrl.replace(/^data:[\w\W]*?,/, ''); try { await this.anki.storeMediaFile(filename, data); } catch (e) { return; } definition.screenshotFileName = filename; } static _getTabUrl(tab) { return new Promise((resolve) => { chrome.tabs.sendMessage(tab.id, {action: 'getUrl'}, {frameId: 0}, (response) => { let url = null; if (!chrome.runtime.lastError) { url = (response !== null && typeof response === 'object' && !Array.isArray(response) ? response.url : null); if (url !== null && typeof url !== 'string') { url = null; } } resolve({tab, url}); }); }); } static async _findTab(timeout, checkUrl) { // This function works around the need to have the "tabs" permission to access tab.url. const tabs = await new Promise((resolve) => chrome.tabs.query({}, resolve)); let matchPromiseResolve = null; const matchPromise = new Promise((resolve) => { matchPromiseResolve = resolve; }); const checkTabUrl = ({tab, url}) => { if (checkUrl(url, tab)) { matchPromiseResolve(tab); } }; const promises = []; for (const tab of tabs) { const promise = Backend._getTabUrl(tab); promise.then(checkTabUrl); promises.push(promise); } const racePromises = [ matchPromise, Promise.all(promises).then(() => null) ]; if (typeof timeout === 'number') { racePromises.push(new Promise((resolve) => setTimeout(() => resolve(null), timeout))); } return await Promise.race(racePromises); } static async _focusTab(tab) { await new Promise((resolve, reject) => { chrome.tabs.update(tab.id, {active: true}, () => { const e = chrome.runtime.lastError; if (e) { reject(e); } else { resolve(); } }); }); if (!(typeof chrome.windows === 'object' && chrome.windows !== null)) { // Windows not supported (e.g. on Firefox mobile) return; } try { const tabWindow = await new Promise((resolve, reject) => { chrome.windows.get(tab.windowId, {}, (tabWindow) => { const e = chrome.runtime.lastError; if (e) { reject(e); } else { resolve(tabWindow); } }); }); if (!tabWindow.focused) { await new Promise((resolve, reject) => { chrome.windows.update(tab.windowId, {focused: true}, () => { const e = chrome.runtime.lastError; if (e) { reject(e); } else { resolve(); } }); }); } } catch (e) { // Edge throws exception for no reason here. } } static async _getBrowser() { if (EXTENSION_IS_BROWSER_EDGE) { return 'edge'; } if (typeof browser !== 'undefined') { try { const info = await browser.runtime.getBrowserInfo(); if (info.name === 'Fennec') { return 'firefox-mobile'; } } catch (e) { // NOP } return 'firefox'; } else { return 'chrome'; } } static _getTemplates(options) { const templates = options.anki.fieldTemplates; return typeof templates === 'string' ? templates : profileOptionsGetDefaultFieldTemplates(); } } Backend._messageHandlers = new Map([ ['optionsSchemaGet', (self, ...args) => self._onApiOptionsSchemaGet(...args)], ['optionsGet', (self, ...args) => self._onApiOptionsGet(...args)], ['optionsGetFull', (self, ...args) => self._onApiOptionsGetFull(...args)], ['optionsSet', (self, ...args) => self._onApiOptionsSet(...args)], ['optionsSave', (self, ...args) => self._onApiOptionsSave(...args)], ['kanjiFind', (self, ...args) => self._onApiKanjiFind(...args)], ['termsFind', (self, ...args) => self._onApiTermsFind(...args)], ['textParse', (self, ...args) => self._onApiTextParse(...args)], ['textParseMecab', (self, ...args) => self._onApiTextParseMecab(...args)], ['definitionAdd', (self, ...args) => self._onApiDefinitionAdd(...args)], ['definitionsAddable', (self, ...args) => self._onApiDefinitionsAddable(...args)], ['noteView', (self, ...args) => self._onApiNoteView(...args)], ['templateRender', (self, ...args) => self._onApiTemplateRender(...args)], ['commandExec', (self, ...args) => self._onApiCommandExec(...args)], ['audioGetUrl', (self, ...args) => self._onApiAudioGetUrl(...args)], ['screenshotGet', (self, ...args) => self._onApiScreenshotGet(...args)], ['forward', (self, ...args) => self._onApiForward(...args)], ['frameInformationGet', (self, ...args) => self._onApiFrameInformationGet(...args)], ['injectStylesheet', (self, ...args) => self._onApiInjectStylesheet(...args)], ['getEnvironmentInfo', (self, ...args) => self._onApiGetEnvironmentInfo(...args)], ['clipboardGet', (self, ...args) => self._onApiClipboardGet(...args)], ['getDisplayTemplatesHtml', (self, ...args) => self._onApiGetDisplayTemplatesHtml(...args)], ['getQueryParserTemplatesHtml', (self, ...args) => self._onApiGetQueryParserTemplatesHtml(...args)], ['getZoom', (self, ...args) => self._onApiGetZoom(...args)] ]); Backend._commandHandlers = new Map([ ['search', (self, ...args) => self._onCommandSearch(...args)], ['help', (self, ...args) => self._onCommandHelp(...args)], ['options', (self, ...args) => self._onCommandOptions(...args)], ['toggle', (self, ...args) => self._onCommandToggle(...args)] ]); window.yomichanBackend = new Backend(); window.yomichanBackend.prepare();