fox-send/app/user.js

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/* global LIMITS AUTH_CONFIG */
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import assets from '../common/assets';
import { getFileList, setFileList } from './api';
import { encryptStream, decryptStream } from './ece';
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import { arrayToB64, b64ToArray, streamToArrayBuffer } from './utils';
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import { blobStream } from './streams';
import { getFileListKey, prepareScopedBundleKey, preparePkce } from './fxa';
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import storage from './storage';
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const textEncoder = new TextEncoder();
const textDecoder = new TextDecoder();
export default class User {
constructor(storage) {
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this.storage = storage;
this.data = storage.user || {};
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}
get info() {
return this.data || this.storage.user || {};
}
set info(data) {
this.data = data;
this.storage.user = data;
}
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get avatar() {
const defaultAvatar = assets.get('user.svg');
if (this.info.avatarDefault) {
return assets.get('firefox_logo-only.svg');
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}
return this.info.avatar || defaultAvatar;
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}
get name() {
return this.info.displayName;
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}
get email() {
return this.info.email;
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}
get loggedIn() {
return !!this.info.access_token;
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}
get bearerToken() {
return this.info.access_token;
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}
get maxSize() {
return this.loggedIn ? LIMITS.MAX_FILE_SIZE : LIMITS.ANON.MAX_FILE_SIZE;
}
get maxExpireSeconds() {
return this.loggedIn
? LIMITS.MAX_EXPIRE_SECONDS
: LIMITS.ANON.MAX_EXPIRE_SECONDS;
}
get maxDownloads() {
return this.loggedIn ? LIMITS.MAX_DOWNLOADS : LIMITS.ANON.MAX_DOWNLOADS;
}
async login(email) {
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const state = arrayToB64(crypto.getRandomValues(new Uint8Array(16)));
storage.set('oauthState', state);
const keys_jwk = await prepareScopedBundleKey(this.storage);
const code_challenge = await preparePkce(this.storage);
const options = {
client_id: AUTH_CONFIG.client_id,
code_challenge,
code_challenge_method: 'S256',
response_type: 'code',
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scope: `profile ${AUTH_CONFIG.key_scope}`,
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state,
keys_jwk
};
if (email) {
options.email = email;
}
const params = new URLSearchParams(options);
location.assign(
`${AUTH_CONFIG.authorization_endpoint}?${params.toString()}`
);
}
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async finishLogin(code, state) {
const localState = storage.get('oauthState');
storage.remove('oauthState');
if (state !== localState) {
throw new Error('state mismatch');
}
const tokenResponse = await fetch(AUTH_CONFIG.token_endpoint, {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({
code,
client_id: AUTH_CONFIG.client_id,
code_verifier: this.storage.get('pkceVerifier')
})
});
const auth = await tokenResponse.json();
const infoResponse = await fetch(AUTH_CONFIG.userinfo_endpoint, {
method: 'GET',
headers: {
Authorization: `Bearer ${auth.access_token}`
}
});
const userInfo = await infoResponse.json();
userInfo.access_token = auth.access_token;
userInfo.fileListKey = await getFileListKey(this.storage, auth.keys_jwe);
this.info = userInfo;
this.storage.remove('pkceVerifier');
}
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logout() {
this.storage.clearLocalFiles();
this.info = {};
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}
async syncFileList() {
let changes = { incoming: false, outgoing: false, downloadCount: false };
if (!this.loggedIn) {
return this.storage.merge();
}
let list = [];
try {
const encrypted = await getFileList(this.bearerToken);
const decrypted = await streamToArrayBuffer(
decryptStream(blobStream(encrypted), b64ToArray(this.info.fileListKey))
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);
list = JSON.parse(textDecoder.decode(decrypted));
} catch (e) {
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if (e.message === '401') {
this.logout();
return { incoming: true };
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}
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}
changes = await this.storage.merge(list);
if (!changes.outgoing) {
return changes;
}
try {
const blob = new Blob([
textEncoder.encode(JSON.stringify(this.storage.files))
]);
const encrypted = await streamToArrayBuffer(
encryptStream(blobStream(blob), b64ToArray(this.info.fileListKey))
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);
await setFileList(this.bearerToken, encrypted);
} catch (e) {
//
}
return changes;
}
toJSON() {
return this.info;
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}
}