Firestore user roles - google-cloud-firestore

I've made an app that utilizes Firestore. I am trying to find documentation on how to assign roles to my users. Ironically enough Google didn't help.
Time has come to set some security rules based on a users role. There will only be two roles; users and admin(s). Admins should be able read and write to everything but a user should only be able to read, write and delte its own content. Writing the rules for that is fine I suppose and well documented, but I can not seem to find any documentation on how to assign a role to a specific user. All my users are just regular users (I guess) including my own user. So adding the .isAdmin to a security check is kind of pointless.
Is there anyone out there that can point me in the right direction?

Related

Keycloak: Optimal Approach for Managing User Heirarchies and Child Groups(Teams)

I scrolled through the documentation of KeyCloak and also set it on my machine to explore.
I also explored fine-grained permissions however I didn't get much detail in documentation around the n-level of nested hierarchies.
Here https://www.keycloak.org/docs/latest/server_admin/ this talks about limiting an admin user to particular client management, however, I want certain users, within the client, to be able to create accounts but with scopes and attributes limited to what's assigned to themselves.
For an example:
For a client(ERP>Transactions) we want to create an Org(our customer) Admin who in return will create teams and team admins. Team admins shall be able to invite their teammates in there.
Now I just want to know if only Keycloak can be used to make sure a user in one Org shouldn't be able to create a user in some other org, in the same way, a team admin shouldn't be able to onboard/invite a user in some other team.
Because if Keycloak in principle can't handle this, our team will start writing custom logic in our application code base for this.

REST API: Authorize access based on given permissions rather than pre-determined roles

You all are familiar with the ability to share a Google Doc with certain people, and provide those people with the ability to view, or edit.
I'm trying to understand how such an architecture would be organized in a REST Api.
For instance, for my document I want to grant read access to:
myself
some#email.com
users who belong to domain.com (everybody who belong to my network)
I'd like to give write access to:
myself
another#email.com
In addition, users with the role of admin also have write access regardless of the permission I define, and users with the role moderator have read access regardless of the permission I define.
What would be the ideal (or best practice) architecture for such a thing? Where would I deligate permissions? On the document itself? Would I have another model handling permissions? How would I create the complex rule-based system where access is granted based on a specific email, a broader domain affiliation, and an even broader site-wide roles.
I can imagine a situation where each document has field for different permissions. For instance:
owner: my id
admin: all the site's admins
moderator: all the site's moderators
viewers: a list of emails / domains
editors: a list of emails / domains
But, is this scalable?
I'd love to get some advice.
Thanks!

How is one supposed to practically use the Access Control features in the Realm Mobile Platform?

I don't see an easy way to grant permissions to another user. It seems to be quite convoluted at the moment, and I wonder if I'm missing something obvious.
Say I want to invite another user to share a Realm. First I would have to ask the other user for their identification, then I would create the permission object, and then finally I would give the other user the address of my realm.
It would be great if I could share some sort of permission token via text message and let the new user register themselves. I suppose I could do that if I created another "User" which represented the shared group, and merely share this abstract user's credentials. It feels a bit hacky that way, but it seems easier to do.
I was hoping the demo application of the shared drawing environment would hold a clue, but after looking at the source code, it turns out both devices are logged in as the same user.
Am I missing something? Given the demo Draw application, how would one user practically invite a second user to join in their shared drawing environment? It seems like there would have to be a whole set of convoluted permissions and url/identification sharing handshakes.
Thanks for asking the question! Today, you will need to create a shared Realm that all users would input their user IDs into and have access to. This way any user can look up an ID and share access to another Realm.
We realize the limitations and are working on offering a number of improvements. The first is pretty close to what you describe, called a PermissionOffer object where you can inform the Realm Object Server you want to grant access to another user for a given Realm(s). The server will then provide a token you can share via any means with the other user. That user can then use the token to create a PermissionOfferResponse object and accept the access grant. This is coming soon, so stay tuned!
Later, we plan to offer a way to lookup user IDs so you don't have to replicate all of them in a shared Realm (see this issue).

Giving user option to select extended permissions

I'm making a application for facebook that will be used for academic research. Right now when the user goes to install the application I'll request additional information which is stated in the extended permissions.
I would perfectly understand someone not wanting to give out certain aspects of this information (It's just used to gather statistics about people taking part , education, religion etc.)
Does anyone know the best way to filter the permissions? For instance maybe someone is willing to give their age but not education. Therefore can I remove the education request from my application install request dynamically?
If you want to ask the user for only those permissions that he wants to give, you can take input from him before redirecting to Facebook login. You can generate the url for requesting permissions based on this custom set of permissions using the 'perms' attribute of the <fb:loginbutton /> tag or pass the list of permissions you want to the $facebook->getLoginUrl(array('req_perms' => $perms)) call.
To keep track of permission changes, you can use the realtime updates offered. You can know more about it here.
You certainly could build an up-front permissions matrix that the user could cherry-pick from. And that would probably be the way to do it, since you can't do anything to customize the permission challenge that the Facebook Platform generates.
The trick would be keeping track of which permissions the user granted in the given access token you'll receive from back from the Platform. Especially since users can change the permissions granted to your application w/o visiting the application itself - so you'll want to be hooked in to that info via the Real Time Updates.

Grouping roles in custom membership provider in ASP.Net MVC 2

Maybe I'm using the wrong terms, but I've been Googling for two days and just can't find anything on this: grouping roles/permissions. Or maybe I don't quite understand membership in the ASP.Net model.
Currently I have a homegrown authentication system in a PHP site, with users, permissions, and roles. Each role (such as "User" or "Technician") is made up of individual permissions (such as "Add New User" or "Close Ticket"). The site is MVC-based, so when the controller action is called, it looks for a basic permission. If not found, it displays an unauthorized page. When it searches for permissions, it looks inside the role groups. However, a user can be a part of the "User" role and have additional permissions without being part of another role.
How would that translate over to MVC2?
The website has a database tables for the user, user_to_permissions, user_to_roles, permissions, roles, and roles_to_permissions. I think the relationships are pretty self-explanatory. I think I'll need to maintain my own database tables for the users, so I'll have custom forms to add/update their info, and obviously a custom login routine.
Can this even work?
RoleProvider "roles" are really just permissions. You can roll them up and present them however you like in your UI (see, for example, AzMan and AuthorizationStoreRoleProvider), but that's up to you. They're not really hierarchical.