diff --git a/README.md b/README.md index 9413b53..32db1c9 100644 --- a/README.md +++ b/README.md @@ -15,15 +15,14 @@ JavaScript implementation of the "Edgio Token" (`ectoken`) - see main repo [ecto ## Install -1. Clone this repo. -2. `cd` into the repo directory -3. Run `npm install` +``` +$ npm install @edgio/js-ectoken +``` ## Usage -This library is provided in CommonJS (CJS) format. To include the library in a script, `require` it: ```js -const { ECToken, encrypt, decrypt } = require('./ECToken.js') +const { ECToken, encrypt, decrypt } = require('@edgio/js-ectoken') const ec_token = new ECToken() ec_token.addValue('ec_country_allow', 'US') @@ -33,6 +32,19 @@ const token = await encrypt('my-secret-key', ec_token) const plaintext = await decrypt('my-secret-key', token) ``` +If installing this library as a replacement for [`ectoken-nodejs`](https://github.com/hattan/ectoken-nodejs), import the `V3` namespace instead: + +```js +const { V3 } = require('@edgio/js-ectoken') + +const token = await V3.encrypt('my-secret-key', 'some_param=valueA&some_other_param=valueB') +const plaintext = await V3.decrypt('my-secret-key', token) +``` + +**Please Note**: because this version of the token generator uses `crypto.subtle`, the `encrypt` and `decrypt` functions **are now asynchronous.** + +The `ECToken` helper class is optional for both the namespaced and non-namespaced import variations. The `encrypt` function will accept either an `ECToken` object or a plain `string`. + ## Contribute We welcome issues, questions, and pull requests. diff --git a/example.js b/example.js new file mode 100644 index 0000000..18db681 --- /dev/null +++ b/example.js @@ -0,0 +1,23 @@ +const { ECToken, encrypt, decrypt } = require('./index.js'); +// Alternatively: +// const { V3 } = require('./index.js') + +(async () => { + // Create the token. + const ec_token = new ECToken() + ec_token.addValue('ec_country_allow', 'US') + ec_token.addValue('ec_country_allow', 'CA') + ec_token.addValue('ec_expire', (Date.now() / 1000) + (60 * 60 * 24)) + + // Encrypt and encode it. + const ec_token_str = await encrypt('my-secret-key', ec_token) + console.log(`Encoded: ${ec_token_str}`) + + console.log(' ') + + // Now decrypt it back to plaintext. + const plaintext = await decrypt('my-secret-key', ec_token_str) + console.log(`Plaintext: ${plaintext}`) + + process.exit() +})(); diff --git a/index.js b/index.js index eae5bbc..49e7ab9 100644 --- a/index.js +++ b/index.js @@ -1,21 +1,10 @@ -const { ECToken, encrypt, decrypt } = require('./ECToken.js'); +'use strict'; +const { V3, encrypt, decrypt } = require('./lib/crypto') +const { ECToken } = require('./lib/ECToken') -(async () => { - // Create the token. - const ec_token = new ECToken() - ec_token.addValue('ec_country_allow', 'US') - ec_token.addValue('ec_country_allow', 'CA') - ec_token.addValue('ec_expire', (Date.now() / 1000) + (60 * 60 * 24)) - - // Encrypt and encode it. - const ec_token_str = await encrypt('my-secret-key', ec_token) - console.log(`Encoded: ${ec_token_str}`) - - console.log(' ') - - // Now decrypt it back to plaintext. - const plaintext = await decrypt('my-secret-key', ec_token_str) - console.log(`Plaintext: ${plaintext}`) - - process.exit() -})() +module.exports = { + V3, + ECToken, + encrypt, + decrypt +} diff --git a/lib/ECToken.js b/lib/ECToken.js new file mode 100644 index 0000000..a9a2dd4 --- /dev/null +++ b/lib/ECToken.js @@ -0,0 +1,73 @@ +/** + * A class to manage Edgecast Token creation. + */ +class ECToken { + constructor() { + // Set default values for all valid token fields. + this.values = { + ec_expire: 0, + ec_country_allow: [], + ec_country_deny: [], + ec_url_allow: [], + ec_host_allow: [], + ec_host_deny: [], + ec_ref_allow: [], + ec_ref_deny: [], + ec_clientip: [], + ec_proto_allow: [], + ec_proto_deny: [] + } + } + + /** + * Set or append a value to the token. + * @param {String} key The key to set or append. + * @param {String} value The value to add. + * @returns None + */ + addValue(key, value) { + if (!(key in this.values)) { + throw new Error(`Invalid key: ${key}`) + } + + if (key === 'ec_expire') { + this.values.ec_expire = parseInt(value) + return + } + + // All other keys can be multivalue. + if (!this.values[key].includes(value)) { + this.values[key].push(value) + } + } + + /** + * @deprecated since v2.0.0; use toString() instead. + */ + serialize() { + return this.toString() + } + + /** + * Serialize the token object as a valid EdgeCast Token. + * @returns {String} + */ + toString() { + let token = Object.keys(this.values).reduce((acc, curr) => { + if (curr === 'ec_expire' && this.values.ec_expire && this.values.ec_expire > 0) { + acc.push(`ec_expire=${this.values.ec_expire}`) + } else { + if (this.values[curr].length) { + acc.push(`${curr}=${this.values[curr].join(',')}`) + } + } + return acc + }, []).join('&') + return token + } +} + +// Export the ECToken helper class. +module.exports = { + ECToken +} diff --git a/ECToken.js b/lib/crypto.js similarity index 67% rename from ECToken.js rename to lib/crypto.js index 072ea2a..ce534de 100644 --- a/ECToken.js +++ b/lib/crypto.js @@ -4,76 +4,14 @@ const base64url = require('base64url') const iv_size_bytes = 12 /** - * An EdgeCast Token - */ -class ECToken { - constructor() { - // Set default values for all valid token fields. - this.values = { - ec_expire: 0, - ec_country_allow: [], - ec_country_deny: [], - ec_url_allow: [], - ec_host_allow: [], - ec_host_deny: [], - ec_ref_allow: [], - ec_ref_deny: [], - ec_clientip: [], - ec_proto_allow: [], - ec_proto_deny: [] - } - } - - /** - * Set or append a value to the token. - * @param {String} key The key to set or append. - * @param {String} value The value to add. - * @returns None - */ - addValue(key, value) { - if (!(key in this.values)) { - throw new Error(`Invalid key: ${key}`) - } - - if (key === 'ec_expire') { - this.values.ec_expire = parseInt(value) - return - } - - // All other keys can be multivalue. - if (!this.values[key].includes(value)) { - this.values[key].push(value) - } - } - - /** - * Serialize the token object as a valid EdgeCast Token. - * @returns {String} The serialized output containing all the options the user set. - */ - serialize() { - let token = Object.keys(this.values).reduce((acc, curr) => { - if (curr === 'ec_expire' && this.values.ec_expire && this.values.ec_expire > 0) { - acc.push(`ec_expire=${this.values.ec_expire}`) - } else { - if (this.values[curr].length) { - acc.push(`${curr}=${this.values[curr].join(',')}`) - } - } - return acc - }, []).join('&') - return token - } -} - -/** - * Encrypt an ECToken with a key. + * Encrypt an ECToken string with a key. * @param {String} key The secret key to encode the token. - * @param {ECToken} token The token to encrypt. + * @param {ECToken|string} token The token to encrypt. * @param {Boolean} verbose Whether to print verbose output. * @returns {Promise} The encrypted token. */ async function encrypt(key, token, verbose = false) { - const token_str = new TextEncoder().encode(token.serialize()) + const token_str = new TextEncoder().encode(token.toString()) const key_encoded = new TextEncoder().encode(key) const key_digest = await crypto.subtle.digest('SHA-256', key_encoded) @@ -160,8 +98,14 @@ async function decrypt(key, token, verbose = false) { return new TextDecoder().decode(decrypted_str) } +// For backwards compatibility with Verizon ectoken, namespace the encrypt/decrypt +// functions, but also export them individually for backwards compatibility with +// this library. module.exports = { - ECToken, + V3: { + encrypt, + decrypt + }, encrypt, decrypt -} +} \ No newline at end of file diff --git a/package-lock.json b/package-lock.json index ed82cf3..5aa9160 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,17 +1,92 @@ { "name": "@edgio/ectoken", - "version": "1.0.0", + "version": "2.0.0", "lockfileVersion": 3, "requires": true, "packages": { "": { "name": "@edgio/ectoken", - "version": "1.0.0", + "version": "2.0.0", "license": "Apache-2.0", "dependencies": { "base64url": "^3.0.1" + }, + "devDependencies": { + "chai": "^4", + "chai-as-promised": "^7.1.2", + "mocha": "^10.4.0" + }, + "engines": { + "node": ">= 15.0.0" + } + }, + "node_modules/ansi-colors": { + "version": "4.1.1", + "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-4.1.1.tgz", + "integrity": 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+ "engines": { + "node": ">= 15.0.0" + }, + "homepage": "https://github.com/Edgio/js-ectoken#readme", "dependencies": { "base64url": "^3.0.1" }, "publishConfig": { "access": "public" + }, + "devDependencies": { + "chai": "^4", + "chai-as-promised": "^7.1.2", + "mocha": "^10.4.0" } } diff --git a/test/test.js b/test/test.js new file mode 100644 index 0000000..0422d34 --- /dev/null +++ b/test/test.js @@ -0,0 +1,84 @@ +'use strict'; + +const chai = require('chai') +const expect = chai.expect +const chaiAsPromised = require('chai-as-promised') +chai.use(chaiAsPromised) +const { ECToken, encrypt, decrypt } = require('../index.js') + +describe('ECToken Helper Class', function() { + it('should add a single value correctly', function() { + const token = new ECToken + token.addValue('ec_country_allow', 'CA') + expect(token.values.ec_country_allow).to.deep.equal(['CA']) + }) + + it('should add multiple values correctly', function() { + const token = new ECToken + token.addValue('ec_country_allow', 'US') + token.addValue('ec_country_allow', 'CA') + expect(token.values.ec_country_allow).to.deep.equal(['US', 'CA']) + }) + + it('should deduplicate multi-value entries', function() { + const token = new ECToken + token.addValue('ec_country_allow', 'US') + token.addValue('ec_country_allow', 'US') + expect(token.values.ec_country_allow).to.deep.equal(['US']) + }) + + it('should serialize to a string properly', function() { + const token = new ECToken + token.addValue('ec_country_allow', 'US') + token.addValue('ec_country_allow', 'CA') + token.addValue('ec_country_deny', 'MX') + const serialized = token.toString() + expect(serialized).to.equal('ec_country_allow=US,CA&ec_country_deny=MX') + }) + + it('should not allow arbitrary parameters', function() { + expect(function() { + const token = new ECToken + token.addValue('arbitrary', 'value') + }).to.throw() + }) +}) + +describe('Encryption and Decryption', function() { + const key = 'my-secret-key' // openssl rand -hex 8 + + // Specify a hard-coded string. + const params = 'ec_expire=12345678&ec_clientip=1.2.3.4' + + // Specify the same token as a helper object. + const token = new ECToken + token.addValue('ec_expire', 12345678) + token.addValue('ec_clientip', '1.2.3.4') + + // Specify an encrypted token using the key above. + const encrypted = 'WWNONztpLdGM11awAYiFRuIIiIG1LOBQaO2cEtCXjT5PelAA-Tavv7eD9YtSeGM13uQsobIkL0xYf6DZLzM6iMbe' + + it('should successfully encrypt a simple string', function() { + return expect(Promise.resolve( + encrypt(key, params) + )).to.eventually.not.be.rejected + }) + + it('should succesfully encrypt a helper token', function() { + expect(function() { + return expect(Promise.resolve( + encrypt(key, token) + )).to.eventually.be.a('string') + }) + }) + + it('should return a string when encrypting', function() { + return expect(Promise.resolve(encrypt(key, params))).to.eventually.be.a('string') + }) + + it('should decrypt a known token', function() { + return expect(Promise.resolve( + decrypt(key, encrypted) + )).to.eventually.equal(params) + }) +})