115 lines
3.3 KiB
TypeScript
115 lines
3.3 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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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 isMediaSilencedHost(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 concatNoteContentsForKeyWordCheck(content: {
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cw?: string | null;
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text?: string | null;
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pollChoices?: string[] | null;
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others?: string[] | null;
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}): string {
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/**
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* ノートの内容を結合してキーワードチェック用の文字列を生成する
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* cwとtextは内容が繋がっているかもしれないので間に何も入れずにチェックする
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*/
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return `${content.cw ?? ''}${content.text ?? ''}\n${(content.pollChoices ?? []).join('\n')}\n${(content.others ?? []).join('\n')}`;
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}
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@bindThis
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public isKeyWordIncluded(text: string, keyWords: string[]): boolean {
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if (keyWords.length === 0) return false;
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if (text === '') return false;
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const regexpregexp = /^\/(.+)\/(.*)$/;
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const matched = keyWords.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.host);
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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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@bindThis
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public punyHost(url: string): string {
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const urlObj = new URL(url);
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const host = `${this.toPuny(urlObj.hostname)}${urlObj.port.length > 0 ? ':' + urlObj.port : ''}`;
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return host;
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}
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}
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