KrikoriosandClaude Opus 5
bc23c94ea2
Sign-in gains a "Keep me signed in" checkbox: checked issues a 30-day token and prefills the address next launch, unchecked drops the session to 12 hours and forgets the address. The TTL is chosen server-side in the login route. Emailed codes are now reachable without retyping. OtpField opts into the iOS one-time-code keyboard suggestion and raises a paste chip when the user returns from Gmail with a code on the clipboard. The mails put the code first in the subject and body, which is what makes Gmail render its "Copy code" notification action at all. Fixes found along the way: - Session was wiped on every launch. decodeJwtExp used atob, which neither RN 0.74 nor Expo SDK 51 defines, so it threw, returned null, and the caller read that as "expired" and deleted the token. Replaced with a dependency-free base64url decoder, and restore now only discards a session it can prove is expired. - Verification and reset codes counted attempts but never enforced them, leaving a 6-digit code open to unlimited guessing. Both routes now charge the attempt before comparing so concurrent guesses can't race past the cap of five, and compare in constant time. - A wrong verification code showed the "Verified" success screen: onModalHide fired unconditionally, so the failure state advanced the flow. Only an explicit "verified" state does that now. - fetchAPI discarded the server's error body, so the UI substring-matched synthetic status strings and showed "Could not sign in" for everything. It now throws ApiError carrying status and the server's message. - Login answered a missing account faster than a wrong password; it now runs the same scrypt work either way. - Blank email or password is caught client-side instead of surfacing as an opaque 400, and a failed attempt only clears the password on a 401. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
50 lines
1.9 KiB
TypeScript
50 lines
1.9 KiB
TypeScript
// Shared helpers for the 6-digit email codes used by sign-up verification and
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// password reset. Both flows store a salted hash keyed by email, so the code
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// itself only ever lives in the outgoing mail.
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import { createHash, randomInt, timingSafeEqual } from "crypto";
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export const CODE_TTL_MINUTES = 15;
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// A 6-digit code is only 1,000,000 wide, so the attempt cap is what actually
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// makes it safe to email. Both code tables carry an `attempts` column.
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export const MAX_CODE_ATTEMPTS = 5;
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export const generateCode = (): string =>
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String(randomInt(0, 1_000_000)).padStart(6, "0");
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export const hashCode = (email: string, code: string): string =>
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createHash("sha256").update(`${email}:${code}`).digest("hex");
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export const codeMatches = (
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storedHash: string,
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email: string,
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code: string,
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): boolean => {
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const expected = Buffer.from(storedHash, "hex");
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const actual = Buffer.from(hashCode(email, code), "hex");
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return expected.length === actual.length && timingSafeEqual(expected, actual);
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};
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// Gmail and iOS Mail only offer a one-tap "copy code" / keyboard suggestion
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// when the code leads the subject line and the body opens with a recognised
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// phrasing. Keep both formats intact when editing this copy.
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export const verificationEmail = (code: string) => ({
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subject: `${code} is your Waseel verification code`,
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text:
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`${code} is your Waseel verification code.\n\n` +
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`Welcome to Waseel! Enter this code in the app to finish signing up.\n` +
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`It expires in ${CODE_TTL_MINUTES} minutes.\n`,
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});
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export const resetEmail = (code: string) => ({
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subject: `${code} is your Waseel password reset code`,
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text:
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`${code} is your Waseel password reset code.\n\n` +
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`We received a request to reset your Waseel password. Enter this code in ` +
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`the app to choose a new one.\n` +
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`It expires in ${CODE_TTL_MINUTES} minutes. If you didn't ask for this, ` +
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`you can ignore this email.\n`,
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});
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