Class: ActionDispatch::ContentSecurityPolicy::Middleware

Inherits:
Object
  • Object
show all
Defined in:
actionpack/lib/action_dispatch/http/content_security_policy.rb

Constant Summary collapse

CONTENT_TYPE =
"Content-Type"
POLICY =
"Content-Security-Policy"
POLICY_REPORT_ONLY =
"Content-Security-Policy-Report-Only"

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Returns a new instance of Middleware.


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# File 'actionpack/lib/action_dispatch/http/content_security_policy.rb', line 12

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object


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# File 'actionpack/lib/action_dispatch/http/content_security_policy.rb', line 16

def call(env)
  request = ActionDispatch::Request.new env
  _, headers, _ = response = @app.call(env)

  return response unless html_response?(headers)
  return response if policy_present?(headers)

  if policy = request.content_security_policy
    nonce = request.content_security_policy_nonce
    nonce_directives = request.content_security_policy_nonce_directives
    context = request.controller_instance || request
    headers[header_name(request)] = policy.build(context, nonce, nonce_directives)
  end

  response
end