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/**
* Module dependencies
*/
import $ from 'cafy';
import { JSDOM } from 'jsdom';
import { toUnicode, toASCII } from 'punycode';
import uploadFromUrl from '../../common/drive/upload_from_url';
import User, { pack, validateUsername, isValidName, isValidDescription } from '../../../../models/user';
const request = require('request-promise-native');
const WebFinger = require('webfinger.js');
const webFinger = new WebFinger({});
async function getCollectionCount(url) {
if (!url) {
return null;
}
try {
const collection = await request({ url, json: true });
return collection ? collection.totalItems : null;
} catch (exception) {
return null;
}
}
function findUser(q) {
return User.findOne(q, {
fields: {
data: false
}
});
}
function webFingerAndVerify(query, verifier) {
return new Promise((res, rej) => webFinger.lookup(query, (error, result) => {
if (error) {
return rej(error);
}
if (result.object.subject.toLowerCase().replace(/^acct:/, '') !== verifier) {
return rej('WebFinger verfification failed');
}
res(result.object);
}));
}
/**
* Show a user
*
* @param {any} params
* @param {any} me
* @return {Promise<any>}
*/
module.exports = (params, me) => new Promise(async (res, rej) => {
let user;
// Get 'userId' parameter
const [userId, userIdErr] = $(params.userId).optional.id().$;
if (userIdErr) return rej('invalid userId param');
// Get 'username' parameter
const [username, usernameErr] = $(params.username).optional.string().$;
if (usernameErr) return rej('invalid username param');
// Get 'host' parameter
const [host, hostErr] = $(params.host).optional.string().$;
if (hostErr) return rej('invalid username param');
if (userId === undefined && typeof username !== 'string') {
return rej('userId or pair of username and host is required');
}
// Lookup user
if (typeof host === 'string') {
const usernameLower = username.toLowerCase();
const hostLower_ascii = toASCII(host).toLowerCase();
const hostLower = toUnicode(hostLower_ascii);
user = await findUser({ usernameLower, hostLower });
if (user === null) {
const acct_lower = `${usernameLower}@${hostLower_ascii}`;
let activityStreams;
let finger;
let followersCount;
let followingCount;
let likes_count;
let postsCount;
if (!validateUsername(username)) {
return rej('username validation failed');
}
try {
finger = await webFingerAndVerify(acct_lower, acct_lower);
} catch (exception) {
return rej('WebFinger lookup failed');
}
const self = finger.links.find(link => link.rel && link.rel.toLowerCase() === 'self');
if (!self) {
return rej('WebFinger has no reference to self representation');
}
try {
activityStreams = await request({
url: self.href,
headers: {
Accept: 'application/activity+json, application/ld+json'
},
json: true
});
} catch (exception) {
return rej('failed to retrieve ActivityStreams representation');
}
if (!(activityStreams &&
(Array.isArray(activityStreams['@context']) ?
activityStreams['@context'].includes('https://www.w3.org/ns/activitystreams') :
activityStreams['@context'] === 'https://www.w3.org/ns/activitystreams') &&
activityStreams.type === 'Person' &&
typeof activityStreams.preferredUsername === 'string' &&
activityStreams.preferredUsername.toLowerCase() === usernameLower &&
isValidName(activityStreams.name) &&
isValidDescription(activityStreams.summary)
)) {
return rej('failed ActivityStreams validation');
}
try {
[followersCount, followingCount, likes_count, postsCount] = await Promise.all([
getCollectionCount(activityStreams.followers),
getCollectionCount(activityStreams.following),
getCollectionCount(activityStreams.liked),
getCollectionCount(activityStreams.outbox),
webFingerAndVerify(activityStreams.id, acct_lower),
]);
} catch (exception) {
return rej('failed to fetch assets');
}
const summaryDOM = JSDOM.fragment(activityStreams.summary);
// Create user
user = await User.insert({
avatarId: null,
bannerId: null,
createdAt: new Date(),
description: summaryDOM.textContent,
followersCount,
followingCount,
name: activityStreams.name,
postsCount,
likes_count,
liked_count: 0,
driveCapacity: 1073741824, // 1GB
username: username,
usernameLower,
host: toUnicode(finger.subject.replace(/^.*?@/, '')),
hostLower,
account: {
uri: activityStreams.id,
},
});
const [icon, image] = await Promise.all([
activityStreams.icon,
activityStreams.image,
].map(async image => {
if (!image || image.type !== 'Image') {
return { _id: null };
}
try {
return await uploadFromUrl(image.url, user);
} catch (exception) {
return { _id: null };
}
}));
User.update({ _id: user._id }, {
$set: {
avatarId: icon._id,
bannerId: image._id,
},
});
user.avatarId = icon._id;
user.bannerId = icon._id;
}
} else {
const q = userId !== undefined
? { _id: userId }
: { usernameLower: username.toLowerCase(), host: null };
user = await findUser(q);
if (user === null) {
return rej('user not found');
}
}
// Send response
res(await pack(user, me, {
detail: true
}));
});
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