From 456c3ffdbe37d430c12ad269514674cc89f38c11 Mon Sep 17 00:00:00 2001 From: Andrew White Date: Wed, 15 Nov 2017 21:07:28 +0000 Subject: Add DSL for configuring Content-Security-Policy header https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy --- railties/lib/rails/application.rb | 4 +- railties/lib/rails/application/configuration.rb | 72 ++++++++++++---------- .../rails/application/default_middleware_stack.rb | 4 ++ .../initializers/content_security_policy.rb.tt | 20 ++++++ 4 files changed, 66 insertions(+), 34 deletions(-) create mode 100644 railties/lib/rails/generators/rails/app/templates/config/initializers/content_security_policy.rb.tt (limited to 'railties/lib') diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb index 075d17b0f4..293a736bfd 100644 --- a/railties/lib/rails/application.rb +++ b/railties/lib/rails/application.rb @@ -266,7 +266,9 @@ module Rails "action_dispatch.signed_cookie_digest" => config.action_dispatch.signed_cookie_digest, "action_dispatch.cookies_serializer" => config.action_dispatch.cookies_serializer, "action_dispatch.cookies_digest" => config.action_dispatch.cookies_digest, - "action_dispatch.cookies_rotations" => config.action_dispatch.cookies_rotations + "action_dispatch.cookies_rotations" => config.action_dispatch.cookies_rotations, + "action_dispatch.content_security_policy" => config.content_security_policy, + "action_dispatch.content_security_policy_report_only" => config.content_security_policy_report_only ) end end diff --git a/railties/lib/rails/application/configuration.rb b/railties/lib/rails/application/configuration.rb index e221889da0..0ff0aeb73e 100644 --- a/railties/lib/rails/application/configuration.rb +++ b/railties/lib/rails/application/configuration.rb @@ -16,44 +16,46 @@ module Rails :ssl_options, :public_file_server, :session_options, :time_zone, :reload_classes_only_on_change, :beginning_of_week, :filter_redirect, :x, :enable_dependency_loading, - :read_encrypted_secrets, :log_level + :read_encrypted_secrets, :log_level, :content_security_policy_report_only attr_reader :encoding, :api_only def initialize(*) super - self.encoding = Encoding::UTF_8 - @allow_concurrency = nil - @consider_all_requests_local = false - @filter_parameters = [] - @filter_redirect = [] - @helpers_paths = [] - @public_file_server = ActiveSupport::OrderedOptions.new - @public_file_server.enabled = true - @public_file_server.index_name = "index" - @force_ssl = false - @ssl_options = {} - @session_store = nil - @time_zone = "UTC" - @beginning_of_week = :monday - @log_level = :debug - @generators = app_generators - @cache_store = [ :file_store, "#{root}/tmp/cache/" ] - @railties_order = [:all] - @relative_url_root = ENV["RAILS_RELATIVE_URL_ROOT"] - @reload_classes_only_on_change = true - @file_watcher = ActiveSupport::FileUpdateChecker - @exceptions_app = nil - @autoflush_log = true - @log_formatter = ActiveSupport::Logger::SimpleFormatter.new - @eager_load = nil - @secret_token = nil - @secret_key_base = nil - @api_only = false - @debug_exception_response_format = nil - @x = Custom.new - @enable_dependency_loading = false - @read_encrypted_secrets = false + self.encoding = Encoding::UTF_8 + @allow_concurrency = nil + @consider_all_requests_local = false + @filter_parameters = [] + @filter_redirect = [] + @helpers_paths = [] + @public_file_server = ActiveSupport::OrderedOptions.new + @public_file_server.enabled = true + @public_file_server.index_name = "index" + @force_ssl = false + @ssl_options = {} + @session_store = nil + @time_zone = "UTC" + @beginning_of_week = :monday + @log_level = :debug + @generators = app_generators + @cache_store = [ :file_store, "#{root}/tmp/cache/" ] + @railties_order = [:all] + @relative_url_root = ENV["RAILS_RELATIVE_URL_ROOT"] + @reload_classes_only_on_change = true + @file_watcher = ActiveSupport::FileUpdateChecker + @exceptions_app = nil + @autoflush_log = true + @log_formatter = ActiveSupport::Logger::SimpleFormatter.new + @eager_load = nil + @secret_token = nil + @secret_key_base = nil + @api_only = false + @debug_exception_response_format = nil + @x = Custom.new + @enable_dependency_loading = false + @read_encrypted_secrets = false + @content_security_policy = nil + @content_security_policy_report_only = false end def load_defaults(target_version) @@ -233,6 +235,10 @@ module Rails SourceAnnotationExtractor::Annotation end + def content_security_policy(&block) + @content_security_policy ||= ActionDispatch::ContentSecurityPolicy.new(&block) + end + class Custom #:nodoc: def initialize @configurations = Hash.new diff --git a/railties/lib/rails/application/default_middleware_stack.rb b/railties/lib/rails/application/default_middleware_stack.rb index ea2273c1f2..0e79ba7da0 100644 --- a/railties/lib/rails/application/default_middleware_stack.rb +++ b/railties/lib/rails/application/default_middleware_stack.rb @@ -63,6 +63,10 @@ module Rails middleware.use ::ActionDispatch::Flash end + unless config.api_only + middleware.use ::ActionDispatch::ContentSecurityPolicy::Middleware + end + middleware.use ::Rack::Head middleware.use ::Rack::ConditionalGet middleware.use ::Rack::ETag, "no-cache" diff --git a/railties/lib/rails/generators/rails/app/templates/config/initializers/content_security_policy.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/initializers/content_security_policy.rb.tt new file mode 100644 index 0000000000..656ded4069 --- /dev/null +++ b/railties/lib/rails/generators/rails/app/templates/config/initializers/content_security_policy.rb.tt @@ -0,0 +1,20 @@ +# Define an application-wide content security policy +# For further information see the following documentation +# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy + +Rails.application.config.content_security_policy do |p| + p.default_src :self, :https + p.font_src :self, :https, :data + p.img_src :self, :https, :data + p.object_src :none + p.script_src :self, :https + p.style_src :self, :https, :unsafe_inline + + # Specify URI for violation reports + # p.report_uri "/csp-violation-report-endpoint" +end + +# Report CSP violations to a specified URI +# For further information see the following documentation: +# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only +# Rails.application.config.content_security_policy_report_only = true -- cgit v1.2.3