320 lines
8.3 KiB
JavaScript
320 lines
8.3 KiB
JavaScript
import assets from '../common/assets';
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import { getFileList, setFileList } from './api';
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import { encryptStream, decryptStream } from './ece';
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import { arrayToB64, b64ToArray, streamToArrayBuffer } from './utils';
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import { blobStream } from './streams';
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import { getFileListKey, prepareScopedBundleKey, preparePkce } from './fxa';
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import storage from './storage';
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const textEncoder = new TextEncoder();
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const textDecoder = new TextDecoder();
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const anonId = arrayToB64(crypto.getRandomValues(new Uint8Array(16)));
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async function hashId(id) {
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const d = new Date();
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const month = d.getUTCMonth();
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const year = d.getUTCFullYear();
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const encoded = textEncoder.encode(`${id}:${year}:${month}`);
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const hash = await crypto.subtle.digest('SHA-256', encoded);
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return arrayToB64(new Uint8Array(hash.slice(16)));
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}
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export default class User {
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constructor(storage, limits, authConfig) {
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this.authConfig = authConfig;
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this.limits = limits;
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this.storage = storage;
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this.data = storage.user || {};
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}
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get info() {
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return this.data || this.storage.user || {};
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}
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set info(data) {
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this.data = data;
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this.storage.user = data;
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}
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get firstAction() {
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return this.storage.get('firstAction');
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}
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set firstAction(action) {
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this.storage.set('firstAction', action);
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}
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get surveyed() {
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return this.storage.get('surveyed');
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}
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set surveyed(yes) {
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this.storage.set('surveyed', yes);
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}
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get avatar() {
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const defaultAvatar = assets.get('user.svg');
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if (this.info.avatarDefault) {
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return defaultAvatar;
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}
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return this.info.avatar || defaultAvatar;
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}
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get name() {
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return this.info.displayName;
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}
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get email() {
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return this.info.email;
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}
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get loggedIn() {
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return !!this.info.access_token;
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}
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get bearerToken() {
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return this.info.access_token;
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}
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get refreshToken() {
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return this.info.refresh_token;
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}
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get maxSize() {
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return this.loggedIn
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? this.limits.MAX_FILE_SIZE
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: this.limits.ANON.MAX_FILE_SIZE;
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}
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get maxExpireSeconds() {
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return this.loggedIn
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? this.limits.MAX_EXPIRE_SECONDS
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: this.limits.ANON.MAX_EXPIRE_SECONDS;
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}
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get maxDownloads() {
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return this.loggedIn
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? this.limits.MAX_DOWNLOADS
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: this.limits.ANON.MAX_DOWNLOADS;
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}
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get loginRequired() {
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return this.authConfig.fxa_required;
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}
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async metricId() {
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return this.loggedIn ? hashId(this.info.uid) : undefined;
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}
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async deviceId() {
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return this.loggedIn ? hashId(this.storage.id) : hashId(anonId);
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}
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async startAuthFlow(trigger, utms = {}) {
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this.utms = utms;
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this.trigger = trigger;
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try {
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const params = new URLSearchParams({
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entrypoint: `send-${trigger}`,
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form_type: 'email',
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utm_source: utms.source || 'send',
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utm_campaign: utms.campaign || 'none'
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});
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const res = await fetch(
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`${this.authConfig.issuer}/metrics-flow?${params.toString()}`,
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{
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mode: 'cors'
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}
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);
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const { flowId, flowBeginTime } = await res.json();
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this.flowId = flowId;
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this.flowBeginTime = flowBeginTime;
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} catch (e) {
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console.error(e);
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this.flowId = null;
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this.flowBeginTime = null;
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}
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}
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async login(email) {
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const state = arrayToB64(crypto.getRandomValues(new Uint8Array(16)));
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storage.set('oauthState', state);
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const keys_jwk = await prepareScopedBundleKey(this.storage);
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const code_challenge = await preparePkce(this.storage);
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const options = {
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action: 'email',
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access_type: 'offline',
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client_id: this.authConfig.client_id,
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code_challenge,
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code_challenge_method: 'S256',
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response_type: 'code',
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scope: `profile ${this.authConfig.key_scope}`,
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state,
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keys_jwk
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};
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if (email) {
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options.email = email;
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}
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if (this.flowId && this.flowBeginTime) {
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options.flow_id = this.flowId;
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options.flow_begin_time = this.flowBeginTime;
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}
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if (this.trigger) {
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options.entrypoint = `send-${this.trigger}`;
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}
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if (this.utms) {
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options.utm_campaign = this.utms.campaign || 'none';
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options.utm_content = this.utms.content || 'none';
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options.utm_medium = this.utms.medium || 'none';
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options.utm_source = this.utms.source || 'send';
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options.utm_term = this.utms.term || 'none';
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}
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const params = new URLSearchParams(options);
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location.assign(
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`${this.authConfig.authorization_endpoint}?${params.toString()}`
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);
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}
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async finishLogin(code, state) {
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const localState = storage.get('oauthState');
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storage.remove('oauthState');
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if (state !== localState) {
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throw new Error('state mismatch');
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}
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const tokenResponse = await fetch(this.authConfig.token_endpoint, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json'
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},
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body: JSON.stringify({
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code,
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client_id: this.authConfig.client_id,
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code_verifier: this.storage.get('pkceVerifier')
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})
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});
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const auth = await tokenResponse.json();
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const infoResponse = await fetch(this.authConfig.userinfo_endpoint, {
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method: 'GET',
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headers: {
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Authorization: `Bearer ${auth.access_token}`
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}
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});
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const userInfo = await infoResponse.json();
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userInfo.access_token = auth.access_token;
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userInfo.refresh_token = auth.refresh_token;
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userInfo.fileListKey = await getFileListKey(this.storage, auth.keys_jwe);
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this.info = userInfo;
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this.storage.remove('pkceVerifier');
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}
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async refresh() {
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if (!this.refreshToken) {
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return false;
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}
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try {
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const tokenResponse = await fetch(this.authConfig.token_endpoint, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json'
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},
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body: JSON.stringify({
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client_id: this.authConfig.client_id,
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grant_type: 'refresh_token',
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refresh_token: this.refreshToken
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})
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});
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const auth = await tokenResponse.json();
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this.info.access_token = auth.access_token;
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return true;
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} catch (e) {
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return false;
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}
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}
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async logout() {
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try {
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if (this.refreshToken) {
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await fetch(this.authConfig.revocation_endpoint, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json'
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},
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body: JSON.stringify({
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refresh_token: this.refreshToken
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})
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});
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}
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if (this.bearerToken) {
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await fetch(this.authConfig.revocation_endpoint, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json'
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},
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body: JSON.stringify({
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token: this.bearerToken
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})
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});
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}
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} catch (e) {
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console.error(e);
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// oh well, we tried
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}
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this.storage.clearLocalFiles();
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this.info = {};
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}
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async syncFileList() {
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let changes = { incoming: false, outgoing: false, downloadCount: false };
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if (!this.loggedIn) {
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return this.storage.merge();
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}
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let list = [];
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const key = b64ToArray(this.info.fileListKey);
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const sha = await crypto.subtle.digest('SHA-256', key);
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const kid = arrayToB64(new Uint8Array(sha)).substring(0, 16);
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async function retry(e) {
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if (e.message === '401') {
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const refreshed = await this.refresh();
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if (refreshed) {
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return await this.syncFileList();
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} else {
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await this.logout();
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return { incoming: true };
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}
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}
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}
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try {
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const encrypted = await getFileList(
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this.bearerToken,
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this.refreshToken,
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kid
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);
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const decrypted = await streamToArrayBuffer(
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decryptStream(blobStream(encrypted), key)
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);
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list = JSON.parse(textDecoder.decode(decrypted));
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} catch (e) {
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return retry(e);
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}
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changes = await this.storage.merge(list);
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if (!changes.outgoing) {
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return changes;
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}
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try {
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const blob = new Blob([
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textEncoder.encode(JSON.stringify(this.storage.files))
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]);
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const encrypted = await streamToArrayBuffer(
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encryptStream(blobStream(blob), key)
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);
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await setFileList(this.bearerToken, this.refreshToken, kid, encrypted);
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} catch (e) {
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return retry(e);
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}
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return changes;
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}
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toJSON() {
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return this.info;
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}
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}
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