60 lines
2.0 KiB
TypeScript
60 lines
2.0 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 crypto from 'node:crypto';
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import {
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SMS_MASK_VISIBLE_PREFIX_LENGTH,
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SMS_VERIFICATION_CACHE_PREFIX,
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SMS_VERIFICATION_CODE_LENGTH,
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SMS_VERIFICATION_MESSAGE_TEMPLATE,
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} from '@fluxer/constants/src/SmsVerificationConstants';
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export function buildSmsVerificationCacheKey(phone: string): string {
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return `${SMS_VERIFICATION_CACHE_PREFIX}${phone}`;
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}
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export function generateSmsVerificationCode(): string {
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const maxCodeValue = 10 ** SMS_VERIFICATION_CODE_LENGTH;
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const value = crypto.randomInt(0, maxCodeValue);
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return value.toString().padStart(SMS_VERIFICATION_CODE_LENGTH, '0');
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}
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export function buildSmsVerificationMessage(code: string, ttlSeconds: number): string {
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const ttlMinutes = Math.max(1, Math.floor(ttlSeconds / 60));
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return SMS_VERIFICATION_MESSAGE_TEMPLATE.replace('{code}', code).replace('{minutes}', String(ttlMinutes));
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}
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export function timingSafeEqualStrings(left: string, right: string): boolean {
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const leftBuffer = Buffer.from(left);
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const rightBuffer = Buffer.from(right);
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if (leftBuffer.length !== rightBuffer.length) {
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return false;
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}
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return crypto.timingSafeEqual(leftBuffer, rightBuffer);
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}
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export function maskPhoneNumber(phone: string): string {
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if (phone.length <= SMS_MASK_VISIBLE_PREFIX_LENGTH) {
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return `${phone}***`;
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}
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return `${phone.slice(0, SMS_MASK_VISIBLE_PREFIX_LENGTH)}***`;
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}
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