39 lines
1.3 KiB
Plaintext
39 lines
1.3 KiB
Plaintext
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.decodeProtectedHeader = void 0;
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const base64url_js_1 = require("./base64url.js");
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const buffer_utils_js_1 = require("../lib/buffer_utils.js");
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const is_object_js_1 = require("../lib/is_object.js");
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function decodeProtectedHeader(token) {
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let protectedB64u;
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if (typeof token === 'string') {
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const parts = token.split('.');
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if (parts.length === 3 || parts.length === 5) {
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;
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[protectedB64u] = parts;
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}
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}
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else if (typeof token === 'object' && token) {
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if ('protected' in token) {
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protectedB64u = token.protected;
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}
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else {
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throw new TypeError('Token does not contain a Protected Header');
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}
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}
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try {
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if (typeof protectedB64u !== 'string' || !protectedB64u) {
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throw new Error();
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}
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const result = JSON.parse(buffer_utils_js_1.decoder.decode((0, base64url_js_1.decode)(protectedB64u)));
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if (!(0, is_object_js_1.default)(result)) {
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throw new Error();
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}
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return result;
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}
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catch {
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throw new TypeError('Invalid Token or Protected Header formatting');
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}
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}
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exports.decodeProtectedHeader = decodeProtectedHeader;
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