70 lines
2.2 KiB
JavaScript
70 lines
2.2 KiB
JavaScript
// src/middleware/bearer-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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var TOKEN_STRINGS = "[A-Za-z0-9._~+/-]+=*";
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var PREFIX = "Bearer";
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var HEADER = "Authorization";
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var bearerAuth = (options) => {
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if (!("token" in options || "verifyToken" in options)) {
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throw new Error('bearer auth middleware requires options for "token"');
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}
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if (!options.realm) {
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options.realm = "";
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}
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if (!options.prefix) {
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options.prefix = PREFIX;
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}
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const realm = options.realm?.replace(/"/g, '\\"');
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return async function bearerAuth2(c, next) {
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const headerToken = c.req.header(options.headerName || HEADER);
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if (!headerToken) {
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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": `${options.prefix} realm="` + realm + '"'
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}
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});
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throw new HTTPException(401, { res });
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} else {
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const regexp = new RegExp("^" + options.prefix + " +(" + TOKEN_STRINGS + ") *$");
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const match = regexp.exec(headerToken);
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if (!match) {
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const res = new Response("Bad Request", {
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status: 400,
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headers: {
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"WWW-Authenticate": `${options.prefix} error="invalid_request"`
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}
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});
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throw new HTTPException(400, { res });
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} else {
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let equal = false;
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if ("verifyToken" in options) {
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equal = await options.verifyToken(match[1], c);
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} else if (typeof options.token === "string") {
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equal = await timingSafeEqual(options.token, match[1], options.hashFunction);
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} else if (Array.isArray(options.token) && options.token.length > 0) {
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for (const token of options.token) {
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if (await timingSafeEqual(token, match[1], options.hashFunction)) {
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equal = true;
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break;
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}
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}
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}
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if (!equal) {
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const res = new Response("Unauthorized", {
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status: 401,
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headers: {
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"WWW-Authenticate": `${options.prefix} error="invalid_token"`
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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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}
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await next();
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};
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};
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export {
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bearerAuth
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};
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