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README.md

DataHQ auth service

Build Status

A generic OAuth2 authentication service and user permission manager.

Quick start

Clone the repo and install

make install

Run tests

make test

Run server

python server.py

Env Vars

  • PRIVATE_KEY & PUBLIC_KEY an RSA key-pair in PEM format. See tools/generate_key_pair.sh for more info.
  • GOOGLE_KEY & GOOGLE_SECRET: OAuth credentials for authenticating with Google
  • GITHUB_KEY & GITHUB_SECRET: OAuth credentials for authenticating with Github
  • DATABASE_URL: A SQLAlchemy compatible database connection string (where user data is stored)
  • EXTERNAL_ADDRESS: The hostname where this service is located on
  • ALLOWED_SERVICES: Which permissions providers are available. A ; delimited list of provider identifiers. Each provider identifier takes the form of [alias:]provider, where provider is the name of a Python module which exports a get_permissions(service, userid) function.
  • INSTALLED_EXTENSIONS: List of installed extensions. A ; delimited list of extension - the name of a Python modules which exports one or all of these functions
    • on_new_user(user_info)
    • on_user_login(user_info)
    • on_user_logout(user_info)

API

Check an authentication token's validity

/auth/check

Method: GET

Query Parameters:

  • jwt - authentication token
  • next - URL to redirect to when finished authentication

Returns:

If authenticated:

{
    "authenticated": true,
    "profile": {
        "id": "<user-id>",
        "name": "<user-name>",
        "email": "<user-email>",
        "avatar_url": "<url-for-user's-profile-photo>",
        "idhash": "<unique-id-of-the-user>",
        "username": "<user-selected-id>" # If user has a username
    }
}

If not:

{
    "authenticated": false,
    "providers": {
        "google": {
            "url": "<url-for-logging-in-with-the-Google-provider>"
        },
        "github": {
            "url": "<url-for-logging-in-with-the-Github-provider>"
        },
    }
}

When the authentication flow is finished, the caller will be redirected to the next URL with an extra query parameter jwt which contains the authentication token. The caller should cache this token for further interactions with the API.

Get permission for a service

/auth/authorize

Method: GET

Query Parameters:

  • jwt - user token (received from /user/check)
  • service - the relevant service (e.g. storage-service)

Returns:

{
    "token": "<token-for-the-relevant-service>"
    "userid": "<unique-id-of-the-user>",
    "permissions": {
        "permission-x": true,
        "permission-y": false
    },
    "service": "<relevant-service>"
}

Change the username

/auth/update

Method: POST

Query Parameters:

  • jwt - authentication token (received from /user/check)
  • username - A new username for the user profile (this action is only allowed once)

Returns:

{
    "success": true,
    "error": "<error-message-if-applicable>"
}

Note: trying to update other user profile fields like email will fail silently and return

{
    "success": true
}

Receive authorization public key

/auth/public-key

Method: GET

Returns:

The service's public key in PEM format.

Can be used by services to validate that the permission token is authentic.

About

User authentication service (based on os-conductor of OpenSpending)

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