84 lines
2.5 KiB
TypeScript
84 lines
2.5 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {Config} from '~/Config';
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import {FLUXER_USER_AGENT} from '~/Constants';
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import type {ICaptchaService, VerifyCaptchaParams} from '~/infrastructure/ICaptchaService';
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import {Logger} from '~/Logger';
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interface HCaptchaVerifyResponse {
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success: boolean;
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challenge_ts?: string;
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hostname?: string;
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credit?: boolean;
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'error-codes'?: Array<string>;
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score?: number;
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score_reason?: Array<string>;
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}
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export class CaptchaService implements ICaptchaService {
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private readonly secretKey: string;
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private readonly verifyUrl = 'https://api.hcaptcha.com/siteverify';
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constructor() {
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if (!Config.captcha.hcaptcha?.secretKey) {
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throw new Error('HCAPTCHA_SECRET_KEY is required when CAPTCHA_ENABLED is true');
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}
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this.secretKey = Config.captcha.hcaptcha.secretKey;
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}
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async verify({token, remoteIp}: VerifyCaptchaParams): Promise<boolean> {
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try {
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const params = new URLSearchParams();
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params.append('secret', this.secretKey);
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params.append('response', token);
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if (remoteIp) {
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params.append('remoteip', remoteIp);
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}
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const response = await fetch(this.verifyUrl, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/x-www-form-urlencoded',
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'User-Agent': FLUXER_USER_AGENT,
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},
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body: params.toString(),
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});
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if (!response.ok) {
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Logger.error({status: response.status}, 'hCaptcha verify request failed');
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return false;
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}
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const data = (await response.json()) as HCaptchaVerifyResponse;
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if (!data.success) {
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Logger.warn({errorCodes: data['error-codes']}, 'hCaptcha verification failed');
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return false;
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}
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Logger.debug({hostname: data.hostname}, 'hCaptcha verification successful');
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return true;
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} catch (error) {
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Logger.error({error}, 'Error verifying hCaptcha token');
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return false;
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}
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}
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}
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