main repo

node_modules/jose/dist/node/cjs/runtime/fetch_jwks.js

@@ -0,0 +1,45 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const http = require("http");
+const https = require("https");
+const events_1 = require("events");
+const errors_js_1 = require("../util/errors.js");
+const buffer_utils_js_1 = require("../lib/buffer_utils.js");
+const fetchJwks = async (url, timeout, options) => {
+    let get;
+    switch (url.protocol) {
+        case 'https:':
+            get = https.get;
+            break;
+        case 'http:':
+            get = http.get;
+            break;
+        default:
+            throw new TypeError('Unsupported URL protocol.');
+    }
+    const { agent, headers } = options;
+    const req = get(url.href, {
+        agent,
+        timeout,
+        headers,
+    });
+    const [response] = (await Promise.race([(0, events_1.once)(req, 'response'), (0, events_1.once)(req, 'timeout')]));
+    if (!response) {
+        req.destroy();
+        throw new errors_js_1.JWKSTimeout();
+    }
+    if (response.statusCode !== 200) {
+        throw new errors_js_1.JOSEError('Expected 200 OK from the JSON Web Key Set HTTP response');
+    }
+    const parts = [];
+    for await (const part of response) {
+        parts.push(part);
+    }
+    try {
+        return JSON.parse(buffer_utils_js_1.decoder.decode((0, buffer_utils_js_1.concat)(...parts)));
+    }
+    catch {
+        throw new errors_js_1.JOSEError('Failed to parse the JSON Web Key Set HTTP response as JSON');
+    }
+};
+exports.default = fetchJwks;