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import { URL } from 'node:url';
import { Inject, Injectable } from '@nestjs/common';
import chalk from 'chalk';
import { IsNull } from 'typeorm';
import { DI } from '@/di-symbols.js';
import type { UsersRepository } from '@/models/index.js';
import type { LocalUser, RemoteUser } from '@/models/entities/User.js';
import type { Config } from '@/config.js';
import type Logger from '@/logger.js';
import { UtilityService } from '@/core/UtilityService.js';
import { WebfingerService } from '@/core/WebfingerService.js';
import { RemoteLoggerService } from '@/core/RemoteLoggerService.js';
import { ApPersonService } from '@/core/activitypub/models/ApPersonService.js';
import { bindThis } from '@/decorators.js';
@Injectable()
export class RemoteUserResolveService {
private logger: Logger;
constructor(
@Inject(DI.config)
private config: Config,
@Inject(DI.usersRepository)
private usersRepository: UsersRepository,
private utilityService: UtilityService,
private webfingerService: WebfingerService,
private remoteLoggerService: RemoteLoggerService,
private apPersonService: ApPersonService,
) {
this.logger = this.remoteLoggerService.logger.createSubLogger('resolve-user');
}
@bindThis
public async resolveUser(username: string, host: string | null): Promise<LocalUser | RemoteUser> {
const usernameLower = username.toLowerCase();
if (host == null) {
this.logger.info(`return local user: ${usernameLower}`);
return await this.usersRepository.findOneBy({ usernameLower, host: IsNull() }).then(u => {
if (u == null) {
throw new Error('user not found');
} else {
return u;
}
}) as LocalUser;
}
host = this.utilityService.toPuny(host);
if (this.config.host === host) {
this.logger.info(`return local user: ${usernameLower}`);
return await this.usersRepository.findOneBy({ usernameLower, host: IsNull() }).then(u => {
if (u == null) {
throw new Error('user not found');
} else {
return u;
}
}) as LocalUser;
}
const user = await this.usersRepository.findOneBy({ usernameLower, host }) as RemoteUser | null;
const acctLower = `${usernameLower}@${host}`;
if (user == null) {
const self = await this.resolveSelf(acctLower);
this.logger.succ(`return new remote user: ${chalk.magenta(acctLower)}`);
return await this.apPersonService.createPerson(self.href);
}
// ユーザー情報が古い場合は、WebFilgerからやりなおして返す
if (user.lastFetchedAt == null || Date.now() - user.lastFetchedAt.getTime() > 1000 * 60 * 60 * 24) {
// 繋がらないインスタンスに何回も試行するのを防ぐ, 後続の同様処理の連続試行を防ぐ ため 試行前にも更新する
await this.usersRepository.update(user.id, {
lastFetchedAt: new Date(),
});
this.logger.info(`try resync: ${acctLower}`);
const self = await this.resolveSelf(acctLower);
if (user.uri !== self.href) {
// if uri mismatch, Fix (user@host <=> AP's Person id(RemoteUser.uri)) mapping.
this.logger.info(`uri missmatch: ${acctLower}`);
this.logger.info(`recovery missmatch uri for (username=${username}, host=${host}) from ${user.uri} to ${self.href}`);
// validate uri
const uri = new URL(self.href);
if (uri.hostname !== host) {
throw new Error('Invalid uri');
}
await this.usersRepository.update({
usernameLower,
host: host,
}, {
uri: self.href,
});
} else {
this.logger.info(`uri is fine: ${acctLower}`);
}
await this.apPersonService.updatePerson(self.href);
this.logger.info(`return resynced remote user: ${acctLower}`);
return await this.usersRepository.findOneBy({ uri: self.href }).then(u => {
if (u == null) {
throw new Error('user not found');
} else {
return u as LocalUser | RemoteUser;
}
});
}
this.logger.info(`return existing remote user: ${acctLower}`);
return user;
}
@bindThis
private async resolveSelf(acctLower: string) {
this.logger.info(`WebFinger for ${chalk.yellow(acctLower)}`);
const finger = await this.webfingerService.webfinger(acctLower).catch(err => {
this.logger.error(`Failed to WebFinger for ${chalk.yellow(acctLower)}: ${ err.statusCode ?? err.message }`);
throw new Error(`Failed to WebFinger for ${acctLower}: ${ err.statusCode ?? err.message }`);
});
const self = finger.links.find(link => link.rel != null && link.rel.toLowerCase() === 'self');
if (!self) {
this.logger.error(`Failed to WebFinger for ${chalk.yellow(acctLower)}: self link not found`);
throw new Error('self link not found');
}
return self;
}
}
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