Sharkey/packages/backend/src/core/CaptchaService.ts

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import { Inject, Injectable } from '@nestjs/common';
import { DI } from '@/di-symbols.js';
import type { UsersRepository } from '@/models/index.js';
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import type { Config } from '@/config.js';
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import { HttpRequestService } from '@/core/HttpRequestService.js';
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type CaptchaResponse = {
success: boolean;
'error-codes'?: string[];
};
@Injectable()
export class CaptchaService {
constructor(
@Inject(DI.config)
private config: Config,
private httpRequestService: HttpRequestService,
) {
}
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private async getCaptchaResponse(url: string, secret: string, response: string): Promise<CaptchaResponse> {
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const params = new URLSearchParams({
secret,
response,
});
const res = await fetch(url, {
method: 'POST',
body: params,
headers: {
'User-Agent': this.config.userAgent,
},
// TODO
//timeout: 10 * 1000,
agent: (url, bypassProxy) => this.httpRequestService.getAgentByUrl(url, bypassProxy),
}).catch(err => {
throw `${err.message ?? err}`;
});
if (!res.ok) {
throw `${res.status}`;
}
return await res.json() as CaptchaResponse;
}
public async verifyRecaptcha(secret: string, response: string | null | undefined): Promise<void> {
if (response == null) {
throw 'recaptcha-failed: no response provided';
}
const result = await this.getCaptchaResponse('https://www.recaptcha.net/recaptcha/api/siteverify', secret, response).catch(err => {
throw `recaptcha-request-failed: ${err}`;
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});
if (result.success !== true) {
const errorCodes = result['error-codes'] ? result['error-codes'].join(', ') : '';
throw `recaptcha-failed: ${errorCodes}`;
}
}
public async verifyHcaptcha(secret: string, response: string | null | undefined): Promise<void> {
if (response == null) {
throw 'hcaptcha-failed: no response provided';
}
const result = await this.getCaptchaResponse('https://hcaptcha.com/siteverify', secret, response).catch(err => {
throw `hcaptcha-request-failed: ${err}`;
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});
if (result.success !== true) {
const errorCodes = result['error-codes'] ? result['error-codes'].join(', ') : '';
throw `hcaptcha-failed: ${errorCodes}`;
}
}
public async verifyTurnstile(secret: string, response: string | null | undefined): Promise<void> {
if (response == null) {
throw 'turnstile-failed: no response provided';
}
const result = await this.getCaptchaResponse('https://challenges.cloudflare.com/turnstile/v0/siteverify', secret, response).catch(err => {
throw `turnstile-request-failed: ${err}`;
});
if (result.success !== true) {
const errorCodes = result['error-codes'] ? result['error-codes'].join(', ') : '';
throw `turnstile-failed: ${errorCodes}`;
}
}
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}