Magento2 Advanced Rest Permissions

Adds new REST guest permission to the Integration and Webapi Module especially when you would like to use Magento2 with an AngularJS frontend where the AngularJS frontend can run anywhere.

This module was only created for learning purposes but I've figured out after deeper code review that overall integration of the WebAPI needs more changes.

At the moment this module adds a guest user to the authorization_role table with read/write permissions to Magento_Catalog::catalog, Magento_Catalog::catalog_inventory, Magento_Catalog::products and Magento_Catalog::categories. Due to the missing granularity of permissions we have the write access. See below for a more detailed description.

Switch to the Integrations backend section and click on the button Add Guest Access. That's it. You cannot edit this integration nor active it (See below). The following REST routes (GET, PUT, POST, DELETE) are available:

The further modifications will be:

Create a guest token only for specific routes like add to cart. Use this token also for the checkout. Avoid to force the guest to login in or to first create an account and then s/he can add a product to the cart.
Create an (automatic) customer token for specific routes like customer login, customer account create, etc. Login feature integrated in CustomerTokenService via route /V1/integration/customer/token and also in Magento\Customer\Api\AccountManagementInterface
Maybe merge more product data into new routes to avoid querying multiple endpoints.
Extend [Catalog|Sales]/etc/acl.xml with more granular permissions so that a guest can only read from endpoints (needs to be defined) and not modify them. Investigate also other extensions which have an webapi.xml file.
Extend Magento\Webapi\Model\Plugin\Service\V1\Integration and override protected methods to allow GUESTS
Add observer to REST: "customer create" that an additional REST role in authorization_role table will be created on a per customer basis. A customer can then have write access to the checkout/account/wishlist/etc.
<route url="/V1/carts/" method="POST"> can createAnonymousCart() BUT is secured via resource Magento_Sales::create
Checkout plugins in Magento\Checkout\Model\Cart\Access needs to be modified so that UserContextInterface::USER_TYPE_CUSTOMER will also be accepted
Magento\Customer\Api looks well designed :-)
Fix all performance issues in the Webapi module (see todo comments in the code)
Fix bugs (sorting) when searching for products

As long as Mage2 is in beta phase it is not worth working on the above mentioned points. These issues needs to be added and fixed.

Don't use this modules. There are many missing features in Magento2 which still needs to be implemented. Especially in app/code/Magento/[Catalog|Sales]/etc/acl.xml to allow a more granular access.