# Authorization Authorization is handled separately for _Direct Device Integration (DDI) API_ and _Device Management Federation (DMF) API_ (where successful authentication includes full authorization) and _Management API_ and _UI_ which is based on Spring security [authorities](https://github.com/eclipse-hawkbit/hawkbit/blob/master/hawkbit-security-core/src/main/java/org/eclipse/hawkbit/im/authentication/SpPermission.java). However, keep in mind that hawkBit does not offer an off the shelf authentication provider to leverage these permissions and the underlying multi user/tenant capabilities of hawkBit but it supports authentication providers offering an OpenID Connect interface. Check out [Spring security documentation](http://projects.spring.io/spring-security/) for further information. In hawkBit [SecurityAutoConfiguration](https://github.com/eclipse-hawkbit/hawkbit/blob/master/hawkbit-autoconfigure/src/main/java/org/eclipse/hawkbit/autoconfigure/security/SecurityAutoConfiguration.java) is a good starting point for integration. The default implementation is single user/tenant with basic authentication and the logged-in user is provided with all permissions. Additionally, the application properties may be configured for multiple static users; see [Multiple Users](#multiple-users) for details. --- ## DDI API An authenticated target is permitted to: - retrieve commands from the server - provide feedback to the the server - download artifacts that are assigned to it A target might be permitted to download artifacts without authentication (if enabled, see above). Only the download can be permitted to disable the authentication. This can be used in scenarios where the artifacts itself are e.g. signed and secured. --- ## Management API ### Multiple Users hawkBit optionally supports configuring multiple static users through the application properties. In this case, the user and password Spring security properties are ignored. An example configuration is given below. ```properties hawkbit.security.user.admin.password={noop}admin hawkbit.security.user.admin.firstname=Test hawkbit.security.user.admin.lastname=Admin hawkbit.security.user.admin.email=admin@test.de hawkbit.security.user.admin.permissions=ALL hawkbit.security.user.test.password={noop}test hawkbit.security.user.test.firstname=Test hawkbit.security.user.test.lastname=Tester hawkbit.security.user.test.email=test@tester.com hawkbit.security.user.test.permissions=READ_TARGET,UPDATE_TARGET,CREATE_TARGET,DELETE_TARGET ``` A permissions value of `ALL` will provide that user with all possible permissions. Passwords need to be specified with the used password encoder in brackets. In this example, `noop` is used as the plaintext encoder. For production use, it is recommended to use a hash function designed for passwords such as *bcrypt*. See this [blog post](https://spring.io/blog/2017/11/01/spring-security-5-0-0-rc1-released#password-storage-format) for more information on password encoders in Spring Security. ### OpenID Connect HawkBit supports authentication providers which use the OpenID Connect standard, an authentication layer built on top of the OAuth 2.0 protocol. OIDC integration can be enabled on UI and in server: - **Hawkbit UI** — redirects users to an OIDC provider for authentication - **Hawkbit Management Server** — validates JWT bearer tokens on Management API requests #### Hawkbit UI Enable OIDC login for the UI and register the provider using standard Spring Boot OAuth2 client properties: ```properties # Enable hawkBit OIDC UI login hawkbit.server.security.oauth2.client.enabled=true # Register the provider (replace "myidp" with any name) spring.security.oauth2.client.provider.myidp.issuer-uri=https://idp.example.com/ spring.security.oauth2.client.registration.myidp.client-id=my-client-id spring.security.oauth2.client.registration.myidp.client-secret=my-client-secret spring.security.oauth2.client.registration.myidp.scope=openid,email,profile spring.security.oauth2.client.registration.myidp.provider=myidp ``` Some providers (e.g. Auth0) require additional parameters in the authorization request. Use `additional-query-string-params` to pass them: ```properties # Add extra parameters to the OAuth2 authorization request hawkbit.server.security.oauth2.client.additional-query-string-params.audience=https://my-api-audience ``` Spring Security automatically sets the `redirect_uri` for the authorization code callback. It constructs the value as: ``` {baseUrl}/login/oauth2/code/myidp ``` This URL must be registered as an allowed redirect URI in your identity provider (IdP). #### Hawkbit Management Server Enable JWT bearer token validation for the Management REST API: ```properties # Enable hawkBit default JWT resource server hawkbit.server.security.oauth2.resourceserver.enabled=true # JWK issuer URI for token signature verification spring.security.oauth2.resourceserver.jwt.issuer-uri=https://idp.example.com/ ``` hawkBit maps JWT claims to the username, tenant, and permissions of the authenticated user. The claim paths are configurable and support dot-notation for nested claims (e.g. `resource_access.my-client.roles`): ```properties # Claim path for the hawkBit username (default: preferred_username) hawkbit.server.security.oauth2.resourceserver.jwt.claim.username=preferred_username # Claim path for hawkBit roles/permissions (default: roles) hawkbit.server.security.oauth2.resourceserver.jwt.claim.roles=roles # Claim path for the hawkBit tenant (default: DEFAULT) hawkbit.server.security.oauth2.resourceserver.jwt.claim.tenant=tenant ``` To allow HTTP Basic authentication alongside OAuth2: ```properties hawkbit.server.security.allow-http-basic-on-o-auth-enabled=true ``` #### Swagger UI To enable OAuth2 authorization from Swagger UI, configure the authorization and token endpoints: ```properties springdoc.oauth-flow.authorizationUrl=https://idp.example.com/oauth2/authorize springdoc.oauth-flow.tokenUrl=https://idp.example.com/oauth2/token ``` Swagger UI automatically sets the `redirect_uri` when initiating the authorization flow. It constructs the value as: ``` {window.location.origin}{base-path}/swagger-ui/oauth2-redirect.html ``` This URL must be registered as an allowed redirect URI in your identity provider (IdP) configuration. ### Permissions #### Basics hawkBit uses fine-grained permissions to restrict scopes to the managed entities. The main concept in permissions are: 1. Permission group - a management API usually has a `permission group` correspondent to the managed entity type. For instance Target Management's `permission group` is `TARGET` while Software Module Management's is `SOFTWARE_MODULE`. 2. Permission action (CRUD and special) - `CREATE`, `READ`, `UPDATE`, `DELETE` as well `HANDLE` and `APROVE` for Rollouts Management. The permissions are the formed with `_` pattern - e.g. `CREATE_TARGET`, `READ_SOFTWARE_MODULE` 3. Permission scope - permissions could be scoped further with RSQL filter scopes. I.e. one could restrict `CREATE_TARGET` permissions with a scope, e.g. `type.id==[permissions.md](permissions.md)1`. Then, the final authority that will be granted to user will be `/`, e.g. `CREATE_TRAGET/type.id==1`. If the permission is not scoped the authority will be just ``, e.g. `CREATE_TRAGET`. By default, scope support is disabled! ### Permission groups list - READ/UPDATE/CREATE/DELETE_TARGET for: - Target types - READ/UPDATE/CREATE/DELETE_TARGET for: - Target entities including metadata (that includes also the installed and assigned distribution sets) - Target tags - Target actions - Target registration rules - Bulk operations - Target filters - READ/UPDATE/CREATE/DELETE_SOFTWARE_MODULE for: - Software Module types - READ/UPDATE/CREATE/DELETE_SOFTWARE_MODULE for: - Software Modules - Artifacts - READ/UPDATE/CREATE/DELETE_DISTRIBUTION_SET_TYPE for - Distribution Set types - READ/UPDATE/CREATE/DELETE_DISTRIBUTION_SET for: - Distribution sets - DS tags - DOWNLOAD_REPOSITORY_ARTIFACT - Permission to download artifacts of a software module (Note: READ_REPOSITORY allows only to read the metadata). - READ_TARGET_SECURITY_TOKEN - Permission to read the target security token. The security token is security concerned and should be protected. - READ/UPDATE/CREATE/DELETE_TENANT_CONFIGURATION/TENANT_CONFIGURATION - Permission to read/administrate the tenant settings. - READ/UPDATE/CREATE/DELETE/HANDLE/APPROVE_ROLLOUT for: - Managing rollouts and provision targets through a rollout ### Permission Matrix for example uses cases that need more than one permission | Use Case | Needed permissions | |----------------------------------------------------------------------------|----------------------------------------------------------------------------------| | Search _targets_ by installed or assigned _distribution set_ | READ_DISTRIBUTION_SET, READ_TARGET | | Assign _DS_ to a _target_ | READ_DISTRIBUTION_SET, UPDATE_TARGET | | Assign DS to target through a _Rollout_, i.e. _Rollout_ creation and start | READ_DISTRIBUTION_SET, READ_TARGET, READ_ROLLOUT, CREATE_ROLLOUT, HANDLE_ROLLOUT | | Read _Rollout_ status including its _deployment groups_ | READ_DISTRIBUTION_SET, READ_ROLLOUT | | Checks _targets_ inside _Rollout deployment group_ | READ_DISTRIBUTION_SET, READ_TARGET, READ_ROLLOUT | #### Coarse Access Control All sensitive operation of the management APIs are protected with permission checks. The permission checks are done with Spring Security's `@PreAuthorize` annotation, mostly using a `hasPermission` which allows handling more complex the user authorities. The permission evaluation is handled by a custom `PermissionEvaluator` registered by [org.eclipse.hawkbit.repository.RepositoryConfiguration](https://github.com/eclipse-hawkbit/hawkbit/blob/master/hawkbit-repository/hawkbit-repository-core/src/main/java/org/eclipse/hawkbit/repository/RepositoryConfiguration.java). These `@PreAuthorize` annotations ensures that only the users with required permissions will be able to call the management methods. #### Fine-grained Access Control - Access Controller Further there is a concept of `Access Controller` which could provide further restrictions on the managed entities. If the user have access to a management method, i.e. has the required permissions, his access to the entities could be restricted by registered `Access Controller` for the management service. The `Access Controller` is a typed Spring component which implements [org.eclipse.hawkbit.acm.access.AccessController](https://github.com/eclipse-hawkbit/hawkbit/blob/master/hawkbit-repository/hawkbit-repository-jpa/src/main/java/org/eclipse/hawkbit/repository/jpa/acm/AccessController.java) interface. Out of the box hawkBit provides `Access Controller` implementations for: * Target Management - `target` * Target Type Management - `target-type` * Software Module Management - `software-module` * Software Module Type Management - `software-module-type` * Distribution Set Management - `distribution-set` * Distribution Set Type Management - `distribution-set-type` * Action Management - `action` By default, hawkbit doesn't support scopes. To enable scopes a Spring property `hawkbit.acm.access-controller.enabled` shall be set to `true`. E.g. add in `application.properties`: ```properties hawkbit.acm.access-controller.enabled=true ``` By default, if you have enabled scopes, all supported Access Controllers will be registered. If you want to disable it for a specific service, you could set a property `hawkbit.acm.access-controller..enabled` to `false`. E.g. to disable it for Target Management: ```properties hawkbit.acm.access-controller.target.enabled=false ``` --- ## Device Management Federation API The provided _RabbitMQ_ [vhost and user](https://www.rabbitmq.com/access-control.html) should be provided with the necessary permissions to send messages to hawkBit through the exchange and receive messages from it through the specified queue.