🎓 Access Control

Simple Access Policy
You can test access policies with Postman.
Access the Auth Clients tab and create new client.
resourceType: Client
id: postman
secret: secret
grant_types: ['basic']
Access the Access Control tab and create new access policy with the code below.  Let's consider the work of this policy. In this schema, two constraints are introduced:
it is allowed to use only the GET method;
it is allowed to use only request URIs starting with "/fhir/".
resourceType: AccessPolicy
id: policy-for-postman
engine: json-schema
schema:
  required:
    - client
    - uri
    - request-method
  properties:
    uri:
      type: string
      pattern: '^/fhir/.*'
    client:
      required:
        - id
      properties:
        id:
          const: postman
    request-method:
      const: get
# or matcho engine version
engine: matcho
matcho:
  client: { id: postman }
  uri: '^./fhir/.*'
  request-method: get
Now, let's execute requests in Postman.
 A request succeeds if at least one of the policies is valid for it.
Positive Test
GET {{base}}/fhir/Patient
Negative Test
POST {{base}}/fhir/Patient
Policy Debugging
Let's use the parameter  __debug=policy in requests to see which JSON-schema validation returned true/false.
Positive Test
GET {{base}}/fhir/Patient
Negative Test
POST {{base}}/fhir/Patient
See the full documentation Access Policies.
Access Policies
/security/access-control
Access Policies for Users
Previously, we tested access control for clients using Postman as a client. Now, let's create and test access policies for users. We will still need our client credentials.
First, we need to create a couple of users.
Access the Users tab and create two users in Aidbox.Cloud.
User 1
data:
  name: Camila Harrington
  roles:
    - Administrator
    - Doctor
email: user1@health-samurai.io
password: password1
id: user1
resourceType: User
User 2
data:
  name: Jazmin Holmes
  roles:
    - Patient
email: user2@health-samurai.io
password: password2
id: user2
resourceType: User
Read-Only Access for Patient Role
Now, let's define read-only access for the 'Patient' role. Create an access policy with the code below.
# matcho version
resourceType: AccessPolicy
id: policy-for-postman-users-role-patient
engine: matcho
matcho:
  user:
    data: { roles: {$contains: Patient} }
  client: { id: postman }
  request-method: get
resourceType: AccessPolicy
id: policy-for-postman-users-role-patient
engine: json-schema
schema:
  required:
    - client
    - user
    - request-method
  properties:
    user:
      required:
        - data
      properties:
        data:
          required:
            - roles
          properties:
            roles:
              not:
                items:
                  not:
                    enum:
                      - Patient
              type: array
    client:
      required:
        - id
      properties:
        id:
          const: postman
    request-method:
      const: get
description: Read-only access for users with role Patient from client Postman
​
Full Access for Administrator Role
Let's set access rights for administrators.
# matcho version
engine: matcho
matcho:
  request-method: {$enum: ['get','post','put','delete','patch']}
  user:
    data: {roles: {$contains: 'Administrator'}}
  client: { id: postman }
engine: json-schema
schema:
  required:
    - client
    - user
    - request-method
  properties:
    user:
      required:
        - data
      properties:
        data:
          required:
            - roles
          properties:
            roles:
              not:
                items:
                  not:
                    enum:
                      - Administrator
              type: array
    client:
      required:
        - id
      properties:
        id:
          const: postman
    request-method:
      enum:
        - get
        - post
        - put
        - delete
        - option
        - patch
        - head
description: Full access for users with role Administrator from client Postman
id: policy-for-postman-users-role-administrator
resourceType: AccessPolicy
Test User Access Control
Get Bearer Token for User
Now, let's test the policies in Postman.
First, we need to get bearer token for our user and client.
This line grant_type: password should not be changed.
POST {{base}}/auth/token
​
client_id: postman
client_secret: <your-client-password>
username: user1@health-samurai.io
password: <your-user1-password>
grant_type: password
Execute the request and copy the received access_token value. Paste it to your test request in the Authorization header with the word Bearer before it.
E.g. you got the access_token:
{
    "access_token": "45ab638d-9a3a-492b-b2df-0d8295c108fc",
    "refresh_token": "eyJzZXNzaW9uX2lkIjoiODJhYjYzOGQtOWEzYS00OTJiLWIyZGYtMGQ4Mjk1YzEwOGZjIiwidXNlcl123456InVzZXIxIiwiaWF0IjoxNTQyMDMxODkyfQpvbjE4SUxtRXhVQWJmcl8zZUVGNTZUTl9vV0E",
    "token_type": "bearer"
}
Your authorization header will be: Bearer 45ab638d-9a3a-492b-b2df-0d8295c108fc.
Execute Requests with User Bearer Token
Now, let's execute requests from users to test their access.
Test user request with GET
GET {{base}}/fhir/Patient?__debug=policy
Test user request with POST
POST {{base}}/fhir/Patient?__debug=policy
The results of schema validation should be the following:
Request/User
User 1 (Administrator)
User 2 (Patient)
GET
True
True
POST
True
False
See the full documentation Resource Owner Credentials Grant.
Aidbox
/
Role-Based Access Policies
Terminology
Last updated 5 months ago
Request/User	User 1 (Administrator)	User 2 (Patient)
GET	True	True
POST	True	False