contrib.nodejsscan.good_helmet_checks.helmet_header_x_powered_by

rules:
  - id: helmet_header_x_powered_by
    message: "Default X-Powered-By is removed or modified. More information:
      https://helmetjs.github.io/docs/hide-powered-by/"
    languages:
      - javascript
    severity: WARNING
    patterns:
      - pattern-not: |
          $HELMET(..., {hidePoweredBy: false}, ...)
      - pattern-either:
          - pattern: |
              $APP.use(helmet())
          - pattern: |
              app.disable('x-powered-by')
          - pattern: |
              helmet.hidePoweredBy(...)
          - pattern: |
              hidePoweredBy(...)
          - pattern: |
              helmet({hidePoweredBy: ...})
    metadata:
      category: security
      technology:
        - node.js
        - express
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]