70 lines
2.2 KiB
JavaScript
70 lines
2.2 KiB
JavaScript
// src/middleware/basic-auth/index.ts
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import { HTTPException } from "../../http-exception.js";
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import { timingSafeEqual } from "../../utils/buffer.js";
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import { decodeBase64 } from "../../utils/encode.js";
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var CREDENTIALS_REGEXP = /^ *(?:[Bb][Aa][Ss][Ii][Cc]) +([A-Za-z0-9._~+/-]+=*) *$/;
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var USER_PASS_REGEXP = /^([^:]*):(.*)$/;
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var utf8Decoder = new TextDecoder();
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var auth = (req) => {
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const match = CREDENTIALS_REGEXP.exec(req.header("Authorization") || "");
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if (!match) {
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return void 0;
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}
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let userPass = void 0;
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try {
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userPass = USER_PASS_REGEXP.exec(utf8Decoder.decode(decodeBase64(match[1])));
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} catch {
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}
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if (!userPass) {
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return void 0;
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}
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return { username: userPass[1], password: userPass[2] };
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};
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var basicAuth = (options, ...users) => {
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const usernamePasswordInOptions = "username" in options && "password" in options;
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const verifyUserInOptions = "verifyUser" in options;
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if (!(usernamePasswordInOptions || verifyUserInOptions)) {
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throw new Error(
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'basic auth middleware requires options for "username and password" or "verifyUser"'
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);
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}
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if (!options.realm) {
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options.realm = "Secure Area";
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}
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if (usernamePasswordInOptions) {
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users.unshift({ username: options.username, password: options.password });
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}
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return async function basicAuth2(ctx, next) {
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const requestUser = auth(ctx.req);
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if (requestUser) {
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if (verifyUserInOptions) {
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if (await options.verifyUser(requestUser.username, requestUser.password, ctx)) {
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await next();
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return;
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}
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} else {
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for (const user of users) {
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const [usernameEqual, passwordEqual] = await Promise.all([
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timingSafeEqual(user.username, requestUser.username, options.hashFunction),
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timingSafeEqual(user.password, requestUser.password, options.hashFunction)
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]);
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if (usernameEqual && passwordEqual) {
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await next();
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return;
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}
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}
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}
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}
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const res = new Response("Unauthorized", {
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status: 401,
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headers: {
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"WWW-Authenticate": 'Basic realm="' + options.realm?.replace(/"/g, '\\"') + '"'
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}
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});
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throw new HTTPException(401, { res });
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};
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};
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export {
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basicAuth
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};
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