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import { toUnicode, toASCII } from 'punycode';
import User, { IUser, IRemoteUser } from '../models/user';
import webFinger from './webfinger';
import config from '../config';
import { createPerson, updatePerson } from './activitypub/models/person';
import { URL } from 'url';
import * as debug from 'debug';
const log = debug('misskey:remote:resolve-user');
export default async (username: string, _host: string, option?: any, resync?: boolean): Promise<IUser> => {
const usernameLower = username.toLowerCase();
if (_host == null) {
log(`return local user: ${usernameLower}`);
return await User.findOne({ usernameLower, host: null });
}
const configHostAscii = toASCII(config.host).toLowerCase();
const configHost = toUnicode(configHostAscii);
const hostAscii = toASCII(_host).toLowerCase();
const host = toUnicode(hostAscii);
if (configHost == host) {
log(`return local user: ${usernameLower}`);
return await User.findOne({ usernameLower, host: null });
}
const user = await User.findOne({ usernameLower, host }, option);
const acctLower = `${usernameLower}@${hostAscii}`;
if (user === null) {
const self = await resolveSelf(acctLower);
log(`return new remote user: ${acctLower}`);
return await createPerson(self.href);
}
if (resync) {
log(`try resync: ${acctLower}`);
const self = await resolveSelf(acctLower);
if ((user as IRemoteUser).uri !== self.href) {
// if uri mismatch, Fix (user@host <=> AP's Person id(IRemoteUser.uri)) mapping.
log(`uri missmatch: ${acctLower}`);
console.log(`recovery missmatch uri for (username=${username}, host=${host}) from ${(user as IRemoteUser).uri} to ${self.href}`);
// validate uri
const uri = new URL(self.href);
if (uri.hostname !== hostAscii) {
throw new Error(`Invalied uri`);
}
await User.update({
usernameLower,
host: host
}, {
$set: {
uri: self.href
}
});
} else {
log(`uri is fine: ${acctLower}`);
}
await updatePerson(self.href);
log(`return resynced remote user: ${acctLower}`);
return await User.findOne({ uri: self.href });
}
log(`return existing remote user: ${acctLower}`);
return user;
};
async function resolveSelf(acctLower: string) {
log(`WebFinger for ${acctLower}`);
const finger = await webFinger(acctLower);
const self = finger.links.find(link => link.rel && link.rel.toLowerCase() === 'self');
if (!self) {
throw new Error('self link not found');
}
return self;
}
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