220 lines
7.9 KiB
JavaScript
220 lines
7.9 KiB
JavaScript
;(function (exports) {
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'use strict';
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var OAUTH3 = exports.OAUTH3 = exports.OAUTH3 || require('./oauth3.core.js').OAUTH3;
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OAUTH3.utils.bufferToBinaryString = function (buf) {
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return Array.prototype.map.call(new Uint8Array(buf), function(ch) {
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return String.fromCharCode(ch);
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}).join('');
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};
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OAUTH3.utils.binaryStringToBuffer = function (str) {
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var buf;
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if ('undefined' !== typeof Uint8Array) {
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buf = new Uint8Array(str.length);
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} else {
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buf = [];
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}
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Array.prototype.forEach.call(str, function (ch, ind) {
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buf[ind] = ch.charCodeAt(0);
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});
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return buf;
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};
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OAUTH3.crypto = {};
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OAUTH3.crypto.fingerprintJWK = function (jwk) {
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var keys;
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if (jwk.kty === 'EC') {
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keys = ['crv', 'x', 'y'];
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} else if (jwk.kty === 'RSA') {
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keys = ['e', 'n'];
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} else if (jwk.kty === 'oct') {
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keys = ['k'];
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} else {
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return OAUTH3.PromiseA.reject(new Error('invalid JWK key type ' + jwk.kty));
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}
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keys.push('kty');
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keys.sort();
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var missing = keys.filter(function (name) { return !jwk.hasOwnProperty(name); });
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if (missing.length > 0) {
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return OAUTH3.PromiseA.reject(new Error('JWK of type '+jwk.kty+' missing fields ' + missing));
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}
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var jwkStr = '{' + keys.map(function (name) { return name+':'+jwk[name]; }).join(',') + '}';
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return window.crypto.subtle.digest({name: 'SHA-256'}, OAUTH3.utils.binaryStringToBuffer(jwkStr))
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.then(OAUTH3.utils.bufferToBinaryString).then(OAUTH3._base64.btoa);
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};
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OAUTH3.crypto._createKey = function (ppid) {
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var ecdsaPromise, kekPromise;
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var salt = window.crypto.getRandomValues(new Uint8Array(16));
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ecdsaPromise = window.crypto.subtle.generateKey({name: 'ECDSA', namedCurve: 'P-256'}, true, ['sign', 'verify'])
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.then(function (key) { return window.crypto.subtle.exportKey('jwk', key.privateKey); })
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.then(function (jwk) {
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return OAUTH3.crypto.fingerprintJWK(jwk).then(function (kid) {
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delete jwk.ext;
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delete jwk.key_ops;
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jwk.alg = 'ES256';
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jwk.kid = kid;
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return OAUTH3.PromiseA.resolve(jwk);
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});
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});
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kekPromise = window.crypto.subtle.importKey('raw', OAUTH3.utils.binaryStringToBuffer(ppid), {name: 'PBKDF2'}, false, ['deriveKey'])
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.then(function (key) {
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var opts = {name: 'PBKDF2', salt: salt, iterations: 8192, hash: {name: 'SHA-256'}};
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return window.crypto.subtle.deriveKey(opts, key, {name: 'AES-GCM', length: 256}, false, ['encrypt']);
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});
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return OAUTH3.PromiseA.all([ecdsaPromise, kekPromise]).then(function (keys) {
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var jwkBuf = OAUTH3.utils.binaryStringToBuffer(JSON.stringify(keys[0]));
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var iv = window.crypto.getRandomValues(new Uint8Array(12));
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return window.crypto.subtle.encrypt({name: 'AES-GCM', iv: iv}, keys[1], jwkBuf).then(function (encrypted) {
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return {
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kid: keys[0].kid
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, key: OAUTH3._base64.btoa(OAUTH3.utils.bufferToBinaryString(encrypted))
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, salt: OAUTH3._base64.btoa(OAUTH3.utils.bufferToBinaryString(salt))
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, iv: OAUTH3._base64.btoa(OAUTH3.utils.bufferToBinaryString(iv))
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};
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});
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});
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};
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OAUTH3.crypto._decryptKey = function (ppid, storedObj) {
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var salt = OAUTH3.utils.binaryStringToBuffer(OAUTH3._base64.atob(storedObj.salt));
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var encJwk = OAUTH3.utils.binaryStringToBuffer(OAUTH3._base64.atob(storedObj.key));
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var iv = OAUTH3.utils.binaryStringToBuffer(OAUTH3._base64.atob(storedObj.iv));
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return window.crypto.subtle.importKey('raw', OAUTH3.utils.binaryStringToBuffer(ppid), {name: 'PBKDF2'}, false, ['deriveKey'])
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.then(function (key) {
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var opts = {name: 'PBKDF2', salt: salt, iterations: 8192, hash: {name: 'SHA-256'}};
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return window.crypto.subtle.deriveKey(opts, key, {name: 'AES-GCM', length: 256}, false, ['decrypt']);
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})
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.then(function (key) {
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return window.crypto.subtle.decrypt({name: 'AES-GCM', iv: iv}, key, encJwk);
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})
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.then(OAUTH3.utils.bufferToBinaryString)
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.then(JSON.parse)
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.then(function (jwk) {
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return window.crypto.subtle.importKey('jwk', jwk, {name: 'ECDSA', namedCurve: jwk.crv}, false, ['sign']);
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});
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};
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OAUTH3.crypto._getKey = function (ppid) {
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return window.crypto.subtle.digest({name: 'SHA-256'}, OAUTH3.utils.binaryStringToBuffer(ppid))
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.then(function (hash) {
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var name = 'kek-' + OAUTH3._base64.btoa(OAUTH3.utils.bufferToBinaryString(hash));
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var promise;
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if (window.localStorage.getItem(name) === null) {
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promise = OAUTH3.crypto._createKey(ppid).then(function (key) {
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window.localStorage.setItem(name, JSON.stringify(key));
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return OAUTH3.resolve(key);
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});
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} else {
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promise = OAUTH3.PromiseA.resolve(JSON.parse(window.localStorage.getItem(name)));
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}
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return promise.then(function (storedObj) {
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return OAUTH3.crypto._decryptKey(ppid, storedObj);
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});
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});
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};
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OAUTH3.crypto._signPayload = function (payload) {
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return OAUTH3.crypto._getKey('some PPID').then(function (key) {
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var header = {type: 'jwt', alg: 'ES256'};
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var input = [
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OAUTH3._base64.encodeUrlSafe(JSON.stringify(header, null))
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, OAUTH3._base64.encodeUrlSafe(JSON.stringify(payload, null))
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].join('.');
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return window.crypto.subtle.sign(
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{name: 'ECDSA', hash: {name: 'SHA-256'}}
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, key
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, OAUTH3.utils.binaryStringToBuffer(input)
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).then(function (signature) {
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var base64Sig = OAUTH3._base64.encodeUrlSafe(OAUTH3.utils.bufferToBinaryString(signature));
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return OAUTH3.PromiseA.resolve(input + '.' + base64Sig);
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});
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});
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};
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OAUTH3.authn.resourceOwnerPassword = OAUTH3.authz.resourceOwnerPassword = function (directive, opts) {
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var providerUri = directive.issuer;
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if (opts.mockError) {
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return OAUTH3.PromiseA.resolve({data: {error_description: "fake error", error: "errorcode", error_uri: "https://blah"}});
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}
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return OAUTH3._mockToken(providerUri, opts);
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};
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OAUTH3.authn.loginMeta = function (directive, opts) {
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if (opts.mockError) {
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return OAUTH3.PromiseA.resolve({ data: { error: { message: "Yikes!", code: 'E' } } });
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}
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return OAUTH3.PromiseA.resolve({ data: {} });
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};
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OAUTH3.authn.otp = function (directive, opts) {
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if (opts.mockError) {
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return OAUTH3.PromiseA.resolve({data: {error: {message: "Yikes!", code: 'E'}}});
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}
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return OAUTH3.PromiseA.resolve({data: {uuid: "uuidblah"}});
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};
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OAUTH3.authz.scopes = function () {
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return {
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pending: ['oauth3_authn'] // not yet accepted
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, granted: [] // all granted, ever
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, requested: ['oauth3_authn'] // all requested, now
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, accepted: [] // granted (ever) and requested (now)
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};
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};
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OAUTH3.authz.grants = function (providerUri, opts) {
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if ('POST' === opts.method) {
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return OAUTH3._mockToken(providerUri, opts);
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}
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return OAUTH3.discover(providerUri, {
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client_id: providerUri
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, debug: opts.debug
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}).then(function (directive) {
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return {
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client: {
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name: "foo"
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, client_id: "localhost.foo.daplie.me:8443"
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, url: "https://localhost.foo.daplie.me:8443"
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}
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, grants: []
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};
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});
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};
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OAUTH3._refreshToken = function (providerUri, opts) {
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return OAUTH3._mockToken(providerUri, opts);
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};
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OAUTH3._mockToken = function (providerUri, opts) {
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var payload = { exp: Math.round(Date.now() / 1000) + 900, sub: 'fakeUserId', scp: opts.scope };
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return OAUTH3.crypto._signPayload(payload).then(function (accessToken) {
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return OAUTH3.hooks.session.refresh(
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opts.session || {
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provider_uri: providerUri
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, client_id: opts.client_id
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, client_uri: opts.client_uri || opts.clientUri
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}
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, { access_token: accessToken
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, refresh_token: accessToken
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, expires_in: "900"
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, scope: opts.scope
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}
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);
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});
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};
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}('undefined' !== typeof exports ? exports : window));
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