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Firefox Accounts support in Kinto

Project description

Firefox Accounts support in Kinto

travis Coverage

Kinto-fxa enables authentication in Kinto applications using Firefox Accounts OAuth2 bearer tokens.

N.B. This project used to be called cliquet-fxa, but was renamed to

kinto-fxa following the rename of the cliquet project to kinto.

It provides:

  • An authentication policy class;

  • Integration with Kinto cache backend for token verifications;

  • Integration with Kinto for heartbeat view checks;

  • Some optional endpoints to perform the OAuth dance (optional).

  • Kinto documentation

  • Issue tracker

Installation

As stated in the official documentation, Firefox Accounts OAuth integration is currently limited to Mozilla relying services.

Install the Python package:

pip install kinto-fxa

Include the package in the project configuration:

kinto.includes = kinto_fxa

And configure authentication policy using pyramid_multiauth formalism:

multiauth.policies = fxa
multiauth.policy.fxa.use = kinto_fxa.authentication.FxAOAuthAuthenticationPolicy

By default, it will rely on the cache configured in Kinto.

Configuration

Fill those settings with the values obtained during the application registration:

fxa-oauth.client_id = 89513028159972bc
fxa-oauth.client_secret = 9aced230585cc0aaea0a3467dd800
fxa-oauth.oauth_uri = https://oauth-stable.dev.lcip.org/v1
fxa-oauth.requested_scope = profile kinto
fxa-oauth.required_scope = kinto
fxa-oauth.webapp.authorized_domains = *
# fxa-oauth.cache_ttl_seconds = 300
# fxa-oauth.state.ttl_seconds = 3600

In case the application shall not behave as a relier (a.k.a. OAuth dance endpoints disabled):

fxa-oauth.relier.enabled = false

If necessary, override default values for authentication policy:

# multiauth.policy.fxa.realm = Realm

Handling multiple FxA clients

If you want to isolate data between two FxA apps using the same Kinto service to sync their data you can define client specific configuration:

fxa-oauth.clients.notes.client_id = 89513028159972bc
fxa-oauth.clients.notes.required_scope = profile app-notes

fxa-oauth.clients.todo.client_id = 1805184631529d5a
fxa-oauth.clients.todo.required_scope = profile app-todo

Depending on the requested scopes, Kinto Fxa will assign a user id or another (using a suffix):

  • fxa:{user_id}-notes for the former

  • fxa:{user_id}-todo for the later

Note that you can still use fxa:{user_id} to explicitely share data between apps for a given FxA user.

If you don’t give any specific permission, it will be impossible for someone logged in in with the app-notes scope in their Bearer token to access the todo app data.

The default buckets will also be isolated, one for notes and one for todo.

Login flow

OAuth Bearer token

Use the OAuth token with this header:

Authorization: Bearer <oauth_token>
notes:

If the token is not valid, this will result in a 401 error response.

Obtain token using Web UI

  • Navigate the client to GET /fxa-oauth/login?redirect=http://app-endpoint/#. There, a session cookie will be set, and the client will be redirected to a login form on the FxA content server;

  • After submitting the credentials on the login page, the client will be redirected to http://app-endpoint/#{token} (the web-app).

Obtain token custom flow

The GET /v1/fxa-oauth/params endpoint can be use to get the configuration in order to trade the Firefox Accounts BrowserID with a Bearer Token. See Firefox Account documentation about this behavior

$ http GET http://localhost:8000/v0/fxa-oauth/params -v

GET /v0/fxa-oauth/params HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
Host: localhost:8000
User-Agent: HTTPie/0.8.0


HTTP/1.1 200 OK
Content-Length: 103
Content-Type: application/json; charset=UTF-8
Date: Thu, 19 Feb 2015 09:28:37 GMT
Server: waitress

{
    "client_id": "89513028159972bc",
    "oauth_uri": "https://oauth-stable.dev.lcip.org",
    "scope": "profile"
}

Scripts

The kinto-fxa library installs a kinto-fxa command which is used to run utility scripts that come with the kinto-fxa plugin. Right now the only one is process-account-events, which listens to an Amazon SQS queue for account deletion events and tries to delete a user’s data to comply with GDPR.

These scripts have some additional dependencies; you may need to pip install kinto-fxa[scripts] to install them.

To use them, run kinto-fxa [script-name] [arguments].

Changelog

This document describes changes between each past release.

2.5.1 (2018-06-28)

  • Set up metrics on the process-account-events script (#57).

  • Set up logging on the kinto_fxa.scripts programs (#58).

2.5.0 (2018-05-17)

  • Introduce new kinto_fxa.scripts. Right now the only script available is process-account-events, which listens to an SQS queue for user delete events and deletes data from that user’s default bucket, in order to comply with GDPR.

2.4.1 (2018-03-15)

  • Move kinto-fxa to the Kinto github org. (#54)

2.4.0 (2017-11-27)

  • Add support for multiple FxA Clients (#52)

2.3.1 (2017-01-30)

Bug fixes

  • Make sure that caching of token verification nevers prevents from authenticating requests (see Mozilla/PyFxA#48)

2.3.0 (2016-12-22)

Internal changes

  • Migrate schemas to Cornice 2 #38

2.2.0 (2016-10-27)

New features

  • Improve FxA error messages (fixes #1)

Bug fixes

  • Optimize authentication policy to avoid validating the token several times per request (fixes #33)

Internal changes

  • Use Service from kinto.core (fixes #28)

  • Make sure it does not catch Cornice 2 dependency (#36)

2.1.0 (2016-09-08)

  • Add the plugin version in the capability.

2.0.0 (2016-05-19)

Breaking changes

  • Project renamed to Kinto-fxa to match the rename of cliquet to kinto.core.

  • Update to kinto.core for compatibility with Kinto 3.0. This release is no longer compatible with Kinto < 3.0, please upgrade!

  • With Kinto > 2.12*, the setting multiauth.policy.fxa.use must now be explicitly set to kinto_fxa.authentication.FxAOAuthAuthenticationPolicy

Bug fixes

  • Fix checking of Authorization header when python is ran -O (ref mozilla-services/cliquet#592)

1.4.0 (2015-10-28)

  • Updated to Cliquet 2.9.0

Breaking changes

  • cliquet-fxa cannot be included using pyramid.includes setting. Use cliquet.includes instead.

1.3.2 (2015-10-22)

Bug fixes

  • In case the Oauth dance is interrupted, return a 408 Request Timeout error instead of the 401 Unauthenticated one. (#11)

  • Do not call cliquet.load_default_settings from cliquet-fxa (#12)

1.3.1 (2015-09-29)

  • Separate multiple scopes by a + in login URL.

1.3.0 (2015-09-29)

Bug fixes

  • Multiple scopes can be requested on the login flow.

  • Multiple scopes can be required for the app.

Configuration changes

  • fxa-oauth.scope is now deprecated. fxa-oauth.requested_scope and fxa-oauth.required_scope should be used instead.

1.2.0 (2015-06-24)

  • Add default settings to define a policy “fxa”. It is now possible to just include cliquet_fxa and add fxa to multiauth.policies setting list.

  • Do not check presence of cliquet cache in initialization phase.

  • Do not use Cliquet logger to prevent initialization errors.

1.1.0 (2015-06-18)

  • Do not prefix authenticated user with fxa_ anymore (#5)

1.0.0 (2015-06-09)

  • Imported code from Cliquet

Contributors

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