initial commit

server/node_modules/jose/dist/node/cjs/jwks/local.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createLocalJWKSet = exports.LocalJWKSet = exports.isJWKSLike = void 0;
+const import_js_1 = require("../key/import.js");
+const errors_js_1 = require("../util/errors.js");
+const is_object_js_1 = require("../lib/is_object.js");
+function getKtyFromAlg(alg) {
+    switch (typeof alg === 'string' && alg.slice(0, 2)) {
+        case 'RS':
+        case 'PS':
+            return 'RSA';
+        case 'ES':
+            return 'EC';
+        case 'Ed':
+            return 'OKP';
+        default:
+            throw new errors_js_1.JOSENotSupported('Unsupported "alg" value for a JSON Web Key Set');
+    }
+}
+function isJWKSLike(jwks) {
+    return (jwks &&
+        typeof jwks === 'object' &&
+        Array.isArray(jwks.keys) &&
+        jwks.keys.every(isJWKLike));
+}
+exports.isJWKSLike = isJWKSLike;
+function isJWKLike(key) {
+    return (0, is_object_js_1.default)(key);
+}
+function clone(obj) {
+    if (typeof structuredClone === 'function') {
+        return structuredClone(obj);
+    }
+    return JSON.parse(JSON.stringify(obj));
+}
+class LocalJWKSet {
+    constructor(jwks) {
+        this._cached = new WeakMap();
+        if (!isJWKSLike(jwks)) {
+            throw new errors_js_1.JWKSInvalid('JSON Web Key Set malformed');
+        }
+        this._jwks = clone(jwks);
+    }
+    async getKey(protectedHeader, token) {
+        const { alg, kid } = { ...protectedHeader, ...token === null || token === void 0 ? void 0 : token.header };
+        const kty = getKtyFromAlg(alg);
+        const candidates = this._jwks.keys.filter((jwk) => {
+            let candidate = kty === jwk.kty;
+            if (candidate && typeof kid === 'string') {
+                candidate = kid === jwk.kid;
+            }
+            if (candidate && typeof jwk.alg === 'string') {
+                candidate = alg === jwk.alg;
+            }
+            if (candidate && typeof jwk.use === 'string') {
+                candidate = jwk.use === 'sig';
+            }
+            if (candidate && Array.isArray(jwk.key_ops)) {
+                candidate = jwk.key_ops.includes('verify');
+            }
+            if (candidate && alg === 'EdDSA') {
+                candidate = jwk.crv === 'Ed25519' || jwk.crv === 'Ed448';
+            }
+            if (candidate) {
+                switch (alg) {
+                    case 'ES256':
+                        candidate = jwk.crv === 'P-256';
+                        break;
+                    case 'ES256K':
+                        candidate = jwk.crv === 'secp256k1';
+                        break;
+                    case 'ES384':
+                        candidate = jwk.crv === 'P-384';
+                        break;
+                    case 'ES512':
+                        candidate = jwk.crv === 'P-521';
+                        break;
+                }
+            }
+            return candidate;
+        });
+        const { 0: jwk, length } = candidates;
+        if (length === 0) {
+            throw new errors_js_1.JWKSNoMatchingKey();
+        }
+        else if (length !== 1) {
+            const error = new errors_js_1.JWKSMultipleMatchingKeys();
+            const { _cached } = this;
+            error[Symbol.asyncIterator] = async function* () {
+                for (const jwk of candidates) {
+                    try {
+                        yield await importWithAlgCache(_cached, jwk, alg);
+                    }
+                    catch {
+                        continue;
+                    }
+                }
+            };
+            throw error;
+        }
+        return importWithAlgCache(this._cached, jwk, alg);
+    }
+}
+exports.LocalJWKSet = LocalJWKSet;
+async function importWithAlgCache(cache, jwk, alg) {
+    const cached = cache.get(jwk) || cache.set(jwk, {}).get(jwk);
+    if (cached[alg] === undefined) {
+        const key = await (0, import_js_1.importJWK)({ ...jwk, ext: true }, alg);
+        if (key instanceof Uint8Array || key.type !== 'public') {
+            throw new errors_js_1.JWKSInvalid('JSON Web Key Set members must be public keys');
+        }
+        cached[alg] = key;
+    }
+    return cached[alg];
+}
+function createLocalJWKSet(jwks) {
+    const set = new LocalJWKSet(jwks);
+    return async function (protectedHeader, token) {
+        return set.getKey(protectedHeader, token);
+    };
+}
+exports.createLocalJWKSet = createLocalJWKSet;