openapi: 3.2.0
info:
  title: FIAM-KPN Authorization API
  description: A collection of crates for federated identity and access management
  license:
    name: ''
  version: 0.1.1
servers:
- url: https://api-prd.kpn.com/fiam
  description: Server
tags:
- name: Authorization
  description: Authorization policy enforcement endpoints
paths:
  /api/v1/authorization/enforce:
    get:
      tags:
      - Authorization
      operationId: enforce_authorization
      parameters:
      - name: subject
        in: query
        description: Subject requesting access (maps to target.accessSubject)
        required: true
        schema:
          type: string
      - name: resources
        in: query
        description: Resources being accessed (maps to target.resource.identifiers)
        required: true
        schema:
          type: array
          items:
            type: string
      - name: actions
        in: query
        description: Action being performed (maps to target.actions)
        required: true
        schema:
          type: array
          items:
            type: string
      - name: resource_type
        in: query
        description: Resource type (maps to target.resource.type) - e.g., "API", "API2"
        required: true
        schema:
          type: string
      - name: attributes
        in: query
        description: Resource attributes being accessed (maps to target.resource.attributes)
        required: false
        schema:
          type: array
          items:
            type: string
      - name: issuer
        in: query
        description: Policy issuer (maps to policyIssuer)
        required: false
        schema:
          type:
          - string
          - 'null'
      - name: service_provider
        in: query
        description: Service provider for environment constraints
        required: false
        schema:
          type:
          - string
          - 'null'
      - name: license
        in: query
        description: License context for policy set matching
        required: false
        schema:
          type:
          - string
          - 'null'
      responses:
        '200':
          description: Authorization decision
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AuthorizationResponse'
        '400':
          description: Invalid request parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProblemDetail'
        '401':
          description: Unauthorized client
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProblemDetail'
        '403':
          description: Forbidden access
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProblemDetail'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProblemDetail'
      security:
      - bearer_auth: []
    post:
      tags:
      - Authorization
      operationId: enforce_authorization_post
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AuthorizationRequest'
        required: true
      responses:
        '200':
          description: Authorization decision
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AuthorizationResponse'
        '400':
          description: Invalid request parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProblemDetail'
        '401':
          description: Unauthorized client
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProblemDetail'
        '403':
          description: Forbidden access
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProblemDetail'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProblemDetail'
      security:
      - bearer_auth: []
components:
  schemas:
    ProblemDetail:
      type: object
      required:
      - type
      - status
      properties:
        detail:
          type:
          - string
          - 'null'
        instance:
          type:
          - string
          - 'null'
        status:
          type: integer
          format: int32
          minimum: 0
        title:
          type:
          - string
          - 'null'
        type:
          type: string
      additionalProperties: {}
    AuthorizationDecision:
      type: string
      enum:
      - permit
      - deny
      - notApplicable
    AuthorizationResponse:
      type: object
      required:
      - decision
      - decisionId
      - timestamp
      - matchedPolicies
      - evaluationTimeMs
      properties:
        decision:
          $ref: '#/components/schemas/AuthorizationDecision'
        decisionId:
          type: string
        evaluationTimeMs:
          type: integer
          format: int64
          minimum: 0
        explanation:
          type:
          - string
          - 'null'
        matchedPolicies:
          type: array
          items:
            type: string
        timestamp:
          type: integer
          format: int64
    AuthorizationRequest:
      type: object
      description: Authorization enforcement request parameters
      required:
      - subject
      - resources
      - actions
      - resource_type
      properties:
        actions:
          type: array
          items:
            type: string
          description: Action being performed (maps to target.actions)
        attributes:
          type: array
          items:
            type: string
          description: Resource attributes being accessed (maps to target.resource.attributes)
        issuer:
          type:
          - string
          - 'null'
          description: Policy issuer (maps to policyIssuer)
        license:
          type:
          - string
          - 'null'
          description: License context for policy set matching
        resource_type:
          type: string
          description: Resource type (maps to target.resource.type) - e.g., "API", "API2"
        resources:
          type: array
          items:
            type: string
          description: Resources being accessed (maps to target.resource.identifiers)
        service_provider:
          type:
          - string
          - 'null'
          description: Service provider for environment constraints
        subject:
          type: string
          description: Subject requesting access (maps to target.accessSubject)
  securitySchemes:
    bearer_auth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: JWT Bearer token obtained from /oauth/token endpoint