mirror of
https://github.com/titanscouting/tra-analysis.git
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280 lines
15 KiB
JavaScript
280 lines
15 KiB
JavaScript
/*! firebase-admin v6.0.0 */
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"use strict";
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/*!
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* Copyright 2018 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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var error_1 = require("../utils/error");
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var validator = require("../utils/validator");
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var jwt = require("jsonwebtoken");
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// Audience to use for Firebase Auth Custom tokens
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var FIREBASE_AUDIENCE = 'https://identitytoolkit.googleapis.com/google.identity.identitytoolkit.v1.IdentityToolkit';
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exports.ALGORITHM_RS256 = 'RS256';
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// URL containing the public keys for the Google certs (whose private keys are used to sign Firebase
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// Auth ID tokens)
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var CLIENT_CERT_URL = 'https://www.googleapis.com/robot/v1/metadata/x509/securetoken@system.gserviceaccount.com';
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// URL containing the public keys for Firebase session cookies. This will be updated to a different URL soon.
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var SESSION_COOKIE_CERT_URL = 'https://www.googleapis.com/identitytoolkit/v3/relyingparty/publicKeys';
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/** User facing token information related to the Firebase ID token. */
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exports.ID_TOKEN_INFO = {
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url: 'https://firebase.google.com/docs/auth/admin/verify-id-tokens',
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verifyApiName: 'verifyIdToken()',
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jwtName: 'Firebase ID token',
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shortName: 'ID token',
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expiredErrorCode: 'auth/id-token-expired',
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};
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/** User facing token information related to the Firebase session cookie. */
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exports.SESSION_COOKIE_INFO = {
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url: 'https://firebase.google.com/docs/auth/admin/manage-cookies',
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verifyApiName: 'verifySessionCookie()',
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jwtName: 'Firebase session cookie',
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shortName: 'session cookie',
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expiredErrorCode: 'auth/session-cookie-expired',
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};
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/**
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* Class for verifying general purpose Firebase JWTs. This verifies ID tokens and session cookies.
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*/
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var FirebaseTokenVerifier = /** @class */ (function () {
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function FirebaseTokenVerifier(clientCertUrl, algorithm, issuer, projectId, tokenInfo) {
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this.clientCertUrl = clientCertUrl;
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this.algorithm = algorithm;
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this.issuer = issuer;
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this.projectId = projectId;
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this.tokenInfo = tokenInfo;
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if (!validator.isURL(clientCertUrl)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "The provided public client certificate URL is an invalid URL.");
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}
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else if (!validator.isNonEmptyString(algorithm)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "The provided JWT algorithm is an empty string.");
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}
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else if (!validator.isURL(issuer)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "The provided JWT issuer is an invalid URL.");
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}
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else if (!validator.isNonNullObject(tokenInfo)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "The provided JWT information is not an object or null.");
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}
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else if (!validator.isURL(tokenInfo.url)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "The provided JWT verification documentation URL is invalid.");
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}
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else if (!validator.isNonEmptyString(tokenInfo.verifyApiName)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "The JWT verify API name must be a non-empty string.");
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}
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else if (!validator.isNonEmptyString(tokenInfo.jwtName)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "The JWT public full name must be a non-empty string.");
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}
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else if (!validator.isNonEmptyString(tokenInfo.shortName)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "The JWT public short name must be a non-empty string.");
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}
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else if (!validator.isNonEmptyString(tokenInfo.expiredErrorCode)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "The JWT expiration error code must be a non-empty string.");
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}
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this.shortNameArticle = tokenInfo.shortName.charAt(0).match(/[aeiou]/i) ? 'an' : 'a';
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// For backward compatibility, the project ID is validated in the verification call.
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}
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/**
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* Verifies the format and signature of a Firebase Auth JWT token.
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*
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* @param {string} jwtToken The Firebase Auth JWT token to verify.
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* @return {Promise<object>} A promise fulfilled with the decoded claims of the Firebase Auth ID
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* token.
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*/
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FirebaseTokenVerifier.prototype.verifyJWT = function (jwtToken) {
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var _this = this;
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if (!validator.isString(jwtToken)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, "First argument to " + this.tokenInfo.verifyApiName + " must be a " + this.tokenInfo.jwtName + " string.");
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}
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if (!validator.isNonEmptyString(this.projectId)) {
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throw new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_CREDENTIAL, "Must initialize app with a cert credential or set your Firebase project ID as the " +
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("GOOGLE_CLOUD_PROJECT environment variable to call " + this.tokenInfo.verifyApiName + "."));
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}
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var fullDecodedToken = jwt.decode(jwtToken, {
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complete: true,
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});
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var header = fullDecodedToken && fullDecodedToken.header;
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var payload = fullDecodedToken && fullDecodedToken.payload;
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var projectIdMatchMessage = " Make sure the " + this.tokenInfo.shortName + " comes from the same " +
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"Firebase project as the service account used to authenticate this SDK.";
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var verifyJwtTokenDocsMessage = " See " + this.tokenInfo.url + " " +
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("for details on how to retrieve " + this.shortNameArticle + " " + this.tokenInfo.shortName + ".");
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var errorMessage;
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if (!fullDecodedToken) {
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errorMessage = "Decoding " + this.tokenInfo.jwtName + " failed. Make sure you passed the entire string JWT " +
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("which represents " + this.shortNameArticle + " " + this.tokenInfo.shortName + ".") + verifyJwtTokenDocsMessage;
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}
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else if (typeof header.kid === 'undefined') {
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var isCustomToken = (payload.aud === FIREBASE_AUDIENCE);
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var isLegacyCustomToken = (header.alg === 'HS256' && payload.v === 0 && 'd' in payload && 'uid' in payload.d);
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if (isCustomToken) {
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errorMessage = this.tokenInfo.verifyApiName + " expects " + this.shortNameArticle + " " +
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(this.tokenInfo.shortName + ", but was given a custom token.");
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}
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else if (isLegacyCustomToken) {
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errorMessage = this.tokenInfo.verifyApiName + " expects " + this.shortNameArticle + " " +
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(this.tokenInfo.shortName + ", but was given a legacy custom token.");
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}
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else {
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errorMessage = 'Firebase ID token has no "kid" claim.';
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}
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errorMessage += verifyJwtTokenDocsMessage;
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}
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else if (header.alg !== this.algorithm) {
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errorMessage = this.tokenInfo.jwtName + " has incorrect algorithm. Expected \"" + this.algorithm + "\" but got " +
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"\"" + header.alg + "\"." + verifyJwtTokenDocsMessage;
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}
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else if (payload.aud !== this.projectId) {
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errorMessage = this.tokenInfo.jwtName + " has incorrect \"aud\" (audience) claim. Expected \"" +
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this.projectId + "\" but got \"" + payload.aud + "\"." + projectIdMatchMessage +
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verifyJwtTokenDocsMessage;
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}
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else if (payload.iss !== this.issuer + this.projectId) {
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errorMessage = this.tokenInfo.jwtName + " has incorrect \"iss\" (issuer) claim. Expected " +
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("\"" + this.issuer + "\"") + this.projectId + "\" but got \"" +
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payload.iss + "\"." + projectIdMatchMessage + verifyJwtTokenDocsMessage;
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}
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else if (typeof payload.sub !== 'string') {
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errorMessage = this.tokenInfo.jwtName + " has no \"sub\" (subject) claim." + verifyJwtTokenDocsMessage;
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}
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else if (payload.sub === '') {
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errorMessage = this.tokenInfo.jwtName + " has an empty string \"sub\" (subject) claim." + verifyJwtTokenDocsMessage;
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}
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else if (payload.sub.length > 128) {
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errorMessage = this.tokenInfo.jwtName + " has \"sub\" (subject) claim longer than 128 characters." +
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verifyJwtTokenDocsMessage;
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}
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if (typeof errorMessage !== 'undefined') {
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return Promise.reject(new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, errorMessage));
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}
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return this.fetchPublicKeys().then(function (publicKeys) {
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if (!publicKeys.hasOwnProperty(header.kid)) {
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return Promise.reject(new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, _this.tokenInfo.jwtName + " has \"kid\" claim which does not correspond to a known public key. " +
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("Most likely the " + _this.tokenInfo.shortName + " is expired, so get a fresh token from your ") +
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"client app and try again."));
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}
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else {
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return _this.verifyJwtSignatureWithKey(jwtToken, publicKeys[header.kid]);
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}
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});
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};
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/**
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* Verifies the JWT signature using the provided public key.
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* @param {string} jwtToken The JWT token to verify.
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* @param {string} publicKey The public key certificate.
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* @return {Promise<object>} A promise that resolves with the decoded JWT claims on successful
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* verification.
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*/
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FirebaseTokenVerifier.prototype.verifyJwtSignatureWithKey = function (jwtToken, publicKey) {
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var _this = this;
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var errorMessage;
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var verifyJwtTokenDocsMessage = " See " + this.tokenInfo.url + " " +
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("for details on how to retrieve " + this.shortNameArticle + " " + this.tokenInfo.shortName + ".");
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return new Promise(function (resolve, reject) {
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jwt.verify(jwtToken, publicKey, {
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algorithms: [_this.algorithm],
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}, function (error, decodedToken) {
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if (error) {
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if (error.name === 'TokenExpiredError') {
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errorMessage = _this.tokenInfo.jwtName + " has expired. Get a fresh token from your client " +
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("app and try again (" + _this.tokenInfo.expiredErrorCode + ").") + verifyJwtTokenDocsMessage;
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}
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else if (error.name === 'JsonWebTokenError') {
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errorMessage = _this.tokenInfo.jwtName + " has invalid signature." + verifyJwtTokenDocsMessage;
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}
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return reject(new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INVALID_ARGUMENT, errorMessage));
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}
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else {
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decodedToken.uid = decodedToken.sub;
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resolve(decodedToken);
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}
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});
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});
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};
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/**
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* Fetches the public keys for the Google certs.
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*
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* @return {Promise<object>} A promise fulfilled with public keys for the Google certs.
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*/
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FirebaseTokenVerifier.prototype.fetchPublicKeys = function () {
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var _this = this;
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var publicKeysExist = (typeof this.publicKeys !== 'undefined');
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var publicKeysExpiredExists = (typeof this.publicKeysExpireAt !== 'undefined');
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var publicKeysStillValid = (publicKeysExpiredExists && Date.now() < this.publicKeysExpireAt);
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if (publicKeysExist && publicKeysStillValid) {
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return Promise.resolve(this.publicKeys);
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}
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return new Promise(function (resolve, reject) {
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var https = require('https');
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https.get(_this.clientCertUrl, function (res) {
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var buffers = [];
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res.on('data', function (buffer) { return buffers.push(buffer); });
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res.on('end', function () {
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try {
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var response = JSON.parse(Buffer.concat(buffers).toString());
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if (response.error) {
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var errorMessage = 'Error fetching public keys for Google certs: ' + response.error;
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/* istanbul ignore else */
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if (response.error_description) {
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errorMessage += ' (' + response.error_description + ')';
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}
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reject(new error_1.FirebaseAuthError(error_1.AuthClientErrorCode.INTERNAL_ERROR, errorMessage));
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}
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else {
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/* istanbul ignore else */
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if (res.headers.hasOwnProperty('cache-control')) {
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var cacheControlHeader = res.headers['cache-control'];
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var parts = cacheControlHeader.split(',');
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parts.forEach(function (part) {
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var subParts = part.trim().split('=');
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if (subParts[0] === 'max-age') {
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var maxAge = +subParts[1];
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_this.publicKeysExpireAt = Date.now() + (maxAge * 1000);
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}
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});
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}
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_this.publicKeys = response;
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resolve(response);
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}
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}
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catch (e) {
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/* istanbul ignore next */
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reject(e);
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}
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});
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}).on('error', reject);
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});
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};
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return FirebaseTokenVerifier;
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}());
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exports.FirebaseTokenVerifier = FirebaseTokenVerifier;
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/**
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* Creates a new FirebaseTokenVerifier to verify Firebase ID tokens.
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*
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* @param {string} projectId Project ID string.
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* @return {FirebaseTokenVerifier}
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*/
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function createIdTokenVerifier(projectId) {
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return new FirebaseTokenVerifier(CLIENT_CERT_URL, exports.ALGORITHM_RS256, 'https://securetoken.google.com/', projectId, exports.ID_TOKEN_INFO);
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}
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exports.createIdTokenVerifier = createIdTokenVerifier;
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/**
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* Creates a new FirebaseTokenVerifier to verify Firebase session cookies.
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*
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* @param {string} projectId Project ID string.
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* @return {FirebaseTokenVerifier}
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*/
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function createSessionCookieVerifier(projectId) {
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return new FirebaseTokenVerifier(SESSION_COOKIE_CERT_URL, exports.ALGORITHM_RS256, 'https://session.firebase.google.com/', projectId, exports.SESSION_COOKIE_INFO);
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}
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exports.createSessionCookieVerifier = createSessionCookieVerifier;
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