96fe4db099
Added type checking and length validation to the `slug` and `password` variables in the `app/api/auth/route.ts` file to prevent potential DoS attacks via excessively long strings passed to expensive crypto functions. Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
54 lines
1.9 KiB
TypeScript
54 lines
1.9 KiB
TypeScript
/**
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* Auth API — validates album passwords and sets auth cookies.
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* POST /api/auth { slug, password }
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*/
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import { NextRequest, NextResponse } from 'next/server';
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import { authenticate, isProtected } from '@/lib/auth';
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import { checkRateLimit } from '@/lib/rate-limit';
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/** Tight limit for auth attempts — 10 per minute per IP. */
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const AUTH_RPM = 10;
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export async function POST(request: NextRequest) {
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// ── Rate limiting (brute-force protection) ──────────
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const ip = request.headers.get('x-forwarded-for')?.split(',')[0].trim() || 'unknown';
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const { success } = checkRateLimit(`auth:${ip}`, AUTH_RPM);
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if (!success) {
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return NextResponse.json({ error: 'Too many attempts, try again later' }, { status: 429 });
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}
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try {
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const body = await request.json();
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const { slug, password } = body;
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if (!slug || !password) {
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return NextResponse.json({ error: 'Missing slug or password' }, { status: 400 });
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}
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// 🛡️ SECURITY: Validate input types and limit length to prevent DoS attacks
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// (e.g. from extremely long strings being passed to expensive crypto functions)
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if (typeof slug !== 'string' || slug.length > 100) {
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return NextResponse.json({ error: 'Invalid slug format or length' }, { status: 400 });
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}
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if (typeof password !== 'string' || password.length > 100) {
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return NextResponse.json({ error: 'Invalid password format or length' }, { status: 400 });
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}
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if (!isProtected(slug)) {
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return NextResponse.json({ error: 'Album is not password-protected' }, { status: 400 });
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}
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const setCookie = authenticate(slug, password);
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if (!setCookie) {
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return NextResponse.json({ error: 'Invalid password' }, { status: 401 });
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}
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return NextResponse.json({ success: true }, { headers: { 'Set-Cookie': setCookie } });
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} catch {
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return NextResponse.json({ error: 'Invalid request body' }, { status: 400 });
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}
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}
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