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basic_auth.ts
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basic_auth.ts
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import { merge } from "../core/utils/object.ts";
import type { Middleware, RequestHandler } from "../core/server.ts";
export interface Options {
realm: string;
users: Record<string, string>;
}
export const defaults: Options = {
realm: "Basic Authentication",
users: {},
};
// Code from https://deno.land/x/basic_auth@v1.0.1/mod.ts
export default function BasicAuth(
userOptions?: Partial<Options>,
): Middleware {
const options = merge(defaults, userOptions);
return async (request: Request, next: RequestHandler) => {
const authorization = request.headers.get("authorization");
if (authorization && checkAuthorization(authorization, options.users)) {
return await next(request);
}
return new Response("401 Unauthorized", {
status: 401,
statusText: "Unauthorized",
headers: {
"www-authenticate": `Basic realm="${options.realm}"`,
},
});
};
}
function checkAuthorization(
authorization: string,
users: Record<string, string>,
): boolean {
const match = authorization.match(/^Basic\s+(.*)$/);
if (match) {
const [user, pw] = atob(match[1]).split(":");
for (const [u, p] of Object.entries(users)) {
if (user === u && pw == p) {
return true;
}
}
}
return false;
}