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Merge pull request #464 from adieuadieu/implicit-grant-support
Implicit grant flow v3 (rebased #271)
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‎README.md‎

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@@ -20,7 +20,7 @@ The *oauth2-server* module is framework-agnostic but there are several officiall
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## Features
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- Supports `authorization_code`, `client_credentials`, `refresh_token` and `password` grant, as well as *extension grants*, with scopes.
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- Supports `authorization_code`, `client_credentials`, `refresh_token`, `implicit` and `password` grant, as well as *extension grants*, with scopes.
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- Can be used with *promises*, *Node-style callbacks*, *ES6 generators* and *async*/*await* (using [Babel](https://babeljs.io)).
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- Fully [RFC 6749](https://tools.ietf.org/html/rfc6749.html) and [RFC 6750](https://tools.ietf.org/html/rfc6750.html) compliant.
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- Implicitly supports any form of storage, e.g. *PostgreSQL*, *MySQL*, *MongoDB*, *Redis*, etc.

‎docs/api/oauth2-server.rst‎

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**Arguments:**
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+-----------------------------------------+-----------------+-----------------------------------------------------------------------------+
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| Name | Type | Description |
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+=========================================+=================+=============================================================================+
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| request | :doc:`request` | Request object. |
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+-----------------------------------------+-----------------+-----------------------------------------------------------------------------+
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| [request.query.allowed=undefined] | String | ``'false'`` to deny the authorization request (see remarks section). |
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+-----------------------------------------+-----------------+-----------------------------------------------------------------------------+
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| response | :doc:`response` | Response object. |
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+-----------------------------------------+-----------------+-----------------------------------------------------------------------------+
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| [options={}] | Object | Handler options. |
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+-----------------------------------------+-----------------+-----------------------------------------------------------------------------+
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| [options.authenticateHandler=undefined] | Object | The authenticate handler (see remarks section). |
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+-----------------------------------------+-----------------+-----------------------------------------------------------------------------+
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| [options.allowEmptyState=false] | Boolean | Allow clients to specify an empty ``state``. |
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+-----------------------------------------+-----------------+-----------------------------------------------------------------------------+
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| [options.authorizationCodeLifetime=300] | Number | Lifetime of generated authorization codes in seconds (default = 5 minutes). |
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+-----------------------------------------+-----------------+-----------------------------------------------------------------------------+
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| [callback=undefined] | Function | Node-style callback to be used instead of the returned ``Promise``. |
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+-----------------------------------------+-----------------+-----------------------------------------------------------------------------+
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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| Name | Type | Description |
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+=========================================+=================+================================================================================+
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| request | :doc:`request` | Request object. |
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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| [request.query.allowed=undefined] | String | ``'false'`` to deny the authorization request (see remarks section). |
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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| response | :doc:`response` | Response object. |
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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| [options={}] | Object | Handler options. |
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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| [options.authenticateHandler=undefined] | Object | The authenticate handler (see remarks section). |
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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| [options.allowEmptyState=false] | Boolean | Allow clients to specify an empty ``state``. |
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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| [options.authorizationCodeLifetime=300] | Number | Lifetime of generated authorization codes in seconds (default = 5 minutes). |
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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| [options.accessTokenLifetime=3600] | Number | Lifetime of generated implicit grant access token in seconds (default = 1 hr). |
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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| [callback=undefined] | Function | Node-style callback to be used instead of the returned ``Promise``. |
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+-----------------------------------------+-----------------+--------------------------------------------------------------------------------+
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**Return value:**
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‎docs/model/overview.rst‎

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- :ref:`Model#getUserFromClient`
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- :ref:`Model#saveToken`
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- :ref:`Model#validateScope`
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--------
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.. _ImplicitGrant:
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Implicit Grant
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------------------------
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See :rfc:`Section 4.2 of RFC 6749 <6749#section-4.2>`.
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An implicit grant is used to obtain access tokens optimised for public clients known to operate a particular redirection URI. Usually used for browser-based clients implemented in JavaScript.
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Model functions used by the implicit grant:
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- :ref:`Model#generateAccessToken`
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- :ref:`Model#getClient`
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- :ref:`Model#saveToken`
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- :ref:`Model#validateScope`
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--------
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‎docs/model/spec.rst‎

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- ``authorization_code`` grant
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- ``client_credentials`` grant
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- ``implicit`` grant
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- ``refresh_token`` grant
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- ``password`` grant
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- ``authorization_code`` grant
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- ``client_credentials`` grant
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- ``implicit`` grant
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- ``refresh_token`` grant
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- ``password`` grant
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- ``authorization_code`` grant
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- ``client_credentials`` grant
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- ``implicit`` grant
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- ``password`` grant
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**Arguments:**

‎lib/grant-types/implicit-grant-type.js‎

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'use strict';
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/**
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* Module dependencies.
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*/
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var AbstractGrantType = require('./abstract-grant-type');
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var InvalidArgumentError = require('../errors/invalid-argument-error');
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var Promise = require('bluebird');
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var promisify = require('promisify-any').use(Promise);
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var util = require('util');
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/**
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* Constructor.
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*/
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function ImplicitGrantType(options) {
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options = options || {};
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if (!options.model) {
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throw new InvalidArgumentError('Missing parameter: `model`');
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}
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if (!options.model.saveToken) {
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throw new InvalidArgumentError('Invalid argument: model does not implement `saveToken()`');
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}
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if (!options.user) {
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throw new InvalidArgumentError('Missing parameter: `user`');
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}
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this.scope = options.scope;
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this.user = options.user;
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AbstractGrantType.call(this, options);
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}
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/**
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* Inherit prototype.
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*/
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util.inherits(ImplicitGrantType, AbstractGrantType);
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/**
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* Handle implicit token grant.
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*/
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ImplicitGrantType.prototype.handle = function(request, client) {
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if (!request) {
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throw new InvalidArgumentError('Missing parameter: `request`');
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}
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if (!client) {
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throw new InvalidArgumentError('Missing parameter: `client`');
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}
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return this.saveToken(this.user, client, this.scope);
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};
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/**
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* Save token.
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*/
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ImplicitGrantType.prototype.saveToken = function(user, client, scope) {
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var fns = [
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this.validateScope(user, client, scope),
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this.generateAccessToken(client, user, scope),
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this.getAccessTokenExpiresAt()
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];
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return Promise.all(fns)
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.bind(this)
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.spread(function(scope, accessToken, accessTokenExpiresAt) {
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var token = {
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accessToken: accessToken,
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accessTokenExpiresAt: accessTokenExpiresAt,
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scope: scope
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};
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return promisify(this.model.saveToken, 3).call(this.model, token, client, user);
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});
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};
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/**
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* Export constructor.
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*/
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module.exports = ImplicitGrantType;

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