88 lines
2.4 KiB
TypeScript
88 lines
2.4 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and other misskey contributors
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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import { URL } from 'node:url';
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import { toASCII } from 'punycode';
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import { Inject, Injectable } from '@nestjs/common';
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import RE2 from 're2';
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import { DI } from '@/di-symbols.js';
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import type { Config } from '@/config.js';
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import { bindThis } from '@/decorators.js';
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@Injectable()
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export class UtilityService {
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constructor(
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@Inject(DI.config)
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private config: Config,
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) {
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}
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@bindThis
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public getFullApAccount(username: string, host: string | null): string {
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return host ? `${username}@${this.toPuny(host)}` : `${username}@${this.toPuny(this.config.host)}`;
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}
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@bindThis
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public isSelfHost(host: string | null): boolean {
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if (host == null) return true;
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return this.toPuny(this.config.host) === this.toPuny(host);
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}
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@bindThis
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public isBlockedHost(blockedHosts: string[], host: string | null): boolean {
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if (host == null) return false;
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return blockedHosts.some(x => `.${host.toLowerCase()}`.endsWith(`.${x}`));
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}
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@bindThis
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public isSilencedHost(silencedHosts: string[] | undefined, host: string | null): boolean {
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if (!silencedHosts || host == null) return false;
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return silencedHosts.some(x => `.${host.toLowerCase()}`.endsWith(`.${x}`));
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}
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@bindThis
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public isSensitiveWordIncluded(text: string, sensitiveWords: string[]): boolean {
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if (sensitiveWords.length === 0) return false;
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if (text === '') return false;
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const regexpregexp = /^\/(.+)\/(.*)$/;
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const matched = sensitiveWords.some(filter => {
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// represents RegExp
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const regexp = filter.match(regexpregexp);
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// This should never happen due to input sanitisation.
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if (!regexp) {
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const words = filter.split(' ');
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return words.every(keyword => text.includes(keyword));
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}
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try {
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// TODO: RE2インスタンスをキャッシュ
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return new RE2(regexp[1], regexp[2]).test(text);
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} catch (err) {
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// This should never happen due to input sanitisation.
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return false;
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}
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});
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return matched;
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}
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@bindThis
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public extractDbHost(uri: string): string {
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const url = new URL(uri);
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return this.toPuny(url.hostname);
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}
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@bindThis
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public toPuny(host: string): string {
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return toASCII(host.toLowerCase());
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}
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@bindThis
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public toPunyNullable(host: string | null | undefined): string | null {
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if (host == null) return null;
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return toASCII(host.toLowerCase());
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}
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}
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