FIX Catcha

2026-05-24 10:56:28 +03:30
parent 4d4106a8ab
commit 866696094f
18 changed files with 243 additions and 223 deletions
--- a/src/captcha/captcha-challenge.service.ts
+++ b/src/captcha/captcha-challenge.service.ts
@@ -0,0 +1,88 @@
+import { Injectable, NotFoundException } from "@nestjs/common";
+import { randomUUID } from "node:crypto";
+import {
+  CaptchaAuthErrorCode,
+  throwCaptchaAuthError,
+} from "src/auth/auth-services/captcha-auth.error";
+import { CaptchaResponseDto } from "src/auth/dto/captcha-response.dto";
+import { CaptchaService } from "src/captcha/captcha.service";
+import { CaptchaChallengeDbService } from "src/captcha/entities/db-service/captcha-challenge.db.service";
+import { HashService } from "src/utils/hash/hash.service";
+
+@Injectable()
+export class CaptchaChallengeService {
+  constructor(
+    private readonly captchaService: CaptchaService,
+    private readonly hashService: HashService,
+    private readonly captchaChallengeDbService: CaptchaChallengeDbService,
+  ) {}
+
+  async issue(): Promise<CaptchaResponseDto> {
+    const generated = this.captchaService.generate();
+    const captchaId = randomUUID();
+    const answerHash = await this.hashService.hash(
+      this.captchaService.normalizeAnswer(generated.text),
+    );
+
+    await this.captchaChallengeDbService.create({
+      captchaId,
+      answerHash,
+      image: generated.image,
+      expiresAt: generated.expiresAt,
+      expireAt: new Date(generated.expiresAt),
+      usedAt: null,
+    });
+
+    return {
+      captchaId,
+      image: generated.image,
+      expiresAt: generated.expiresAt,
+    };
+  }
+
+  async getImageById(captchaId: string): Promise<string> {
+    const challenge =
+      await this.captchaChallengeDbService.findByCaptchaId(captchaId);
+    if (!challenge) {
+      throw new NotFoundException("Captcha not found");
+    }
+    return this.decodeImage(challenge.image);
+  }
+
+  async verify(captchaId: string | undefined, answer: string | undefined): Promise<void> {
+    if (!captchaId?.trim()) {
+      throwCaptchaAuthError(CaptchaAuthErrorCode.CAPTCHA_REQUIRED);
+    }
+    if (!answer?.trim()) {
+      throwCaptchaAuthError(CaptchaAuthErrorCode.CAPTCHA_REQUIRED);
+    }
+
+    const challenge = await this.captchaChallengeDbService.findByCaptchaId(
+      captchaId.trim(),
+    );
+    if (!challenge) {
+      throwCaptchaAuthError(CaptchaAuthErrorCode.CAPTCHA_NOT_FOUND);
+    }
+    if (challenge.usedAt) {
+      throwCaptchaAuthError(CaptchaAuthErrorCode.CAPTCHA_INVALID);
+    }
+    if (challenge.expiresAt < Date.now()) {
+      throwCaptchaAuthError(CaptchaAuthErrorCode.CAPTCHA_EXPIRED);
+    }
+
+    const ok = await this.hashService.compare(
+      this.captchaService.normalizeAnswer(answer),
+      challenge.answerHash,
+    );
+    if (!ok) {
+      throwCaptchaAuthError(CaptchaAuthErrorCode.CAPTCHA_INVALID);
+    }
+
+    await this.captchaChallengeDbService.markUsed(challenge.captchaId);
+  }
+
+  private decodeImage(imageDataUri: string): string {
+    const base64 = imageDataUri.replace(/^data:image\/svg\+xml;base64,/, "");
+    return Buffer.from(base64, "base64").toString("utf8");
+  }
+}