diff options
Diffstat (limited to 'actionpack/lib/action_controller/metal')
11 files changed, 134 insertions, 85 deletions
diff --git a/actionpack/lib/action_controller/metal/conditional_get.rb b/actionpack/lib/action_controller/metal/conditional_get.rb index f8e0d9cf6c..480e265e44 100644 --- a/actionpack/lib/action_controller/metal/conditional_get.rb +++ b/actionpack/lib/action_controller/metal/conditional_get.rb @@ -36,8 +36,23 @@ module ActionController # # === Parameters: # - # * <tt>:etag</tt>. - # * <tt>:last_modified</tt>. + # * <tt>:etag</tt> Sets a "weak" ETag validator on the response. See the + # +:weak_etag+ option. + # * <tt>:weak_etag</tt> Sets a "weak" ETag validator on the response. + # Requests that set If-None-Match header may return a 304 Not Modified + # response if it matches the ETag exactly. A weak ETag indicates semantic + # equivalence, not byte-for-byte equality, so they're good for caching + # HTML pages in browser caches. They can't be used for responses that + # must be byte-identical, like serving Range requests within a PDF file. + # * <tt>:strong_etag</tt> Sets a "strong" ETag validator on the response. + # Requests that set If-None-Match header may return a 304 Not Modified + # response if it matches the ETag exactly. A strong ETag implies exact + # equality: the response must match byte for byte. This is necessary for + # doing Range requests within a large video or PDF file, for example, or + # for compatibility with some CDNs that don't support weak ETags. + # * <tt>:last_modified</tt> Sets a "weak" last-update validator on the + # response. Subsequent requests that set If-Modified-Since may return a + # 304 Not Modified response if last_modified <= If-Modified-Since. # * <tt>:public</tt> By default the Cache-Control header is private, set this to # +true+ if you want your application to be cacheable by other devices (proxy caches). # * <tt>:template</tt> By default, the template digest for the current @@ -86,12 +101,16 @@ module ActionController # # before_action { fresh_when @article, template: 'widgets/show' } # - def fresh_when(object = nil, etag: object, last_modified: nil, public: false, template: nil) + def fresh_when(object = nil, etag: nil, weak_etag: nil, strong_etag: nil, last_modified: nil, public: false, template: nil) + weak_etag ||= etag || object unless strong_etag last_modified ||= object.try(:updated_at) || object.try(:maximum, :updated_at) - if etag || template - response.etag = combine_etags(etag: etag, last_modified: last_modified, - public: public, template: template) + if strong_etag + response.strong_etag = combine_etags strong_etag, + last_modified: last_modified, public: public, template: template + elsif weak_etag || template + response.weak_etag = combine_etags weak_etag, + last_modified: last_modified, public: public, template: template end response.last_modified = last_modified if last_modified @@ -107,8 +126,23 @@ module ActionController # # === Parameters: # - # * <tt>:etag</tt>. - # * <tt>:last_modified</tt>. + # * <tt>:etag</tt> Sets a "weak" ETag validator on the response. See the + # +:weak_etag+ option. + # * <tt>:weak_etag</tt> Sets a "weak" ETag validator on the response. + # requests that set If-None-Match header may return a 304 Not Modified + # response if it matches the ETag exactly. A weak ETag indicates semantic + # equivalence, not byte-for-byte equality, so they're good for caching + # HTML pages in browser caches. They can't be used for responses that + # must be byte-identical, like serving Range requests within a PDF file. + # * <tt>:strong_etag</tt> Sets a "strong" ETag validator on the response. + # Requests that set If-None-Match header may return a 304 Not Modified + # response if it matches the ETag exactly. A strong ETag implies exact + # equality: the response must match byte for byte. This is necessary for + # doing Range requests within a large video or PDF file, for example, or + # for compatibility with some CDNs that don't support weak ETags. + # * <tt>:last_modified</tt> Sets a "weak" last-update validator on the + # response. Subsequent requests that set If-Modified-Since may return a + # 304 Not Modified response if last_modified <= If-Modified-Since. # * <tt>:public</tt> By default the Cache-Control header is private, set this to # +true+ if you want your application to be cacheable by other devices (proxy caches). # * <tt>:template</tt> By default, the template digest for the current @@ -180,12 +214,12 @@ module ActionController # super if stale? @article, template: 'widgets/show' # end # - def stale?(object = nil, etag: object, last_modified: nil, public: nil, template: nil) - fresh_when(object, etag: etag, last_modified: last_modified, public: public, template: template) + def stale?(object = nil, **freshness_kwargs) + fresh_when(object, **freshness_kwargs) !request.fresh?(response) end - # Sets a HTTP 1.1 Cache-Control header. Defaults to issuing a +private+ + # Sets an HTTP 1.1 Cache-Control header. Defaults to issuing a +private+ # instruction, so that intermediate caches must not cache the response. # # expires_in 20.minutes @@ -195,7 +229,7 @@ module ActionController # This method will overwrite an existing Cache-Control header. # See http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html for more possibilities. # - # The method will also ensure a HTTP Date header for client compatibility. + # The method will also ensure an HTTP Date header for client compatibility. def expires_in(seconds, options = {}) response.cache_control.merge!( :max_age => seconds, @@ -208,7 +242,7 @@ module ActionController response.date = Time.now unless response.date? end - # Sets a HTTP 1.1 Cache-Control header of <tt>no-cache</tt> so no caching should + # Sets an HTTP 1.1 Cache-Control header of <tt>no-cache</tt> so no caching should # occur by the browser or intermediate caches (like caching proxy servers). def expires_now response.cache_control.replace(:no_cache => true) @@ -216,26 +250,23 @@ module ActionController # Cache or yield the block. The cache is supposed to never expire. # - # You can use this method when you have a HTTP response that never changes, + # You can use this method when you have an HTTP response that never changes, # and the browser and proxies should cache it indefinitely. # # * +public+: By default, HTTP responses are private, cached only on the # user's web browser. To allow proxies to cache the response, set +true+ to # indicate that they can serve the cached response to all users. - # - # * +version+: the version passed as a key for the cache. - def http_cache_forever(public: false, version: 'v1') + def http_cache_forever(public: false) expires_in 100.years, public: public - yield if stale?(etag: "#{version}-#{request.fullpath}", + yield if stale?(etag: request.fullpath, last_modified: Time.new(2011, 1, 1).utc, public: public) end private - def combine_etags(options) - etags = etaggers.map { |etagger| instance_exec(options, &etagger) }.compact - etags.unshift options[:etag] + def combine_etags(validator, options) + [validator, *etaggers.map { |etagger| instance_exec(options, &etagger) }].compact end end end diff --git a/actionpack/lib/action_controller/metal/cookies.rb b/actionpack/lib/action_controller/metal/cookies.rb index f8efb2b076..44925641a1 100644 --- a/actionpack/lib/action_controller/metal/cookies.rb +++ b/actionpack/lib/action_controller/metal/cookies.rb @@ -3,7 +3,7 @@ module ActionController #:nodoc: extend ActiveSupport::Concern included do - helper_method :cookies + helper_method :cookies if defined?(helper_method) end private diff --git a/actionpack/lib/action_controller/metal/data_streaming.rb b/actionpack/lib/action_controller/metal/data_streaming.rb index 957e7a3019..59984a0028 100644 --- a/actionpack/lib/action_controller/metal/data_streaming.rb +++ b/actionpack/lib/action_controller/metal/data_streaming.rb @@ -84,7 +84,7 @@ module ActionController #:nodoc: # Options: # * <tt>:filename</tt> - suggests a filename for the browser to use. # * <tt>:type</tt> - specifies an HTTP content type. Defaults to 'application/octet-stream'. You can specify - # either a string or a symbol for a registered type register with <tt>Mime::Type.register</tt>, for example :json + # either a string or a symbol for a registered type register with <tt>Mime::Type.register</tt>, for example :json. # If omitted, type will be guessed from the file extension specified in <tt>:filename</tt>. # If no content type is registered for the extension, default type 'application/octet-stream' will be used. # * <tt>:disposition</tt> - specifies whether the file will be shown inline or downloaded. diff --git a/actionpack/lib/action_controller/metal/http_authentication.rb b/actionpack/lib/action_controller/metal/http_authentication.rb index 35be6d9300..53527c08b6 100644 --- a/actionpack/lib/action_controller/metal/http_authentication.rb +++ b/actionpack/lib/action_controller/metal/http_authentication.rb @@ -347,7 +347,12 @@ module ActionController # private # def authenticate # authenticate_or_request_with_http_token do |token, options| - # token == TOKEN + # # Compare the tokens in a time-constant manner, to mitigate + # # timing attacks. + # ActiveSupport::SecurityUtils.secure_compare( + # ::Digest::SHA256.hexdigest(token), + # ::Digest::SHA256.hexdigest(TOKEN) + # ) # end # end # end diff --git a/actionpack/lib/action_controller/metal/implicit_render.rb b/actionpack/lib/action_controller/metal/implicit_render.rb index 3a6f784507..6192fc0f9c 100644 --- a/actionpack/lib/action_controller/metal/implicit_render.rb +++ b/actionpack/lib/action_controller/metal/implicit_render.rb @@ -1,33 +1,31 @@ require 'active_support/core_ext/string/strip' module ActionController - # Handles implicit rendering for a controller action when it did not - # explicitly indicate an appropiate response via methods such as +render+, - # +respond_to+, +redirect+ or +head+. + # Handles implicit rendering for a controller action that does not + # explicitly respond with +render+, +respond_to+, +redirect+, or +head+. # - # For API controllers, the implicit render always renders "204 No Content" - # and does not account for any templates. + # For API controllers, the implicit response is always 204 No Content. # - # For other controllers, the following conditions are checked: + # For all other controllers, we use these heuristics to decide whether to + # render a template, raise an error for a missing template, or respond with + # 204 No Content: # - # First, if a template exists for the controller action, it is rendered. - # This template lookup takes into account the action name, locales, format, - # variant, template handlers, etc. (see +render+ for details). + # First, if we DO find a template, it's rendered. Template lookup accounts + # for the action name, locales, format, variant, template handlers, and more + # (see +render+ for details). # - # Second, if other templates exist for the controller action but is not in - # the right format (or variant, etc.), an <tt>ActionController::UnknownFormat</tt> - # is raised. The list of available templates is assumed to be a complete - # enumeration of all the possible formats (or variants, etc.); that is, - # having only HTML and JSON templates indicate that the controller action is - # not meant to handle XML requests. + # Second, if we DON'T find a template but the controller action does have + # templates for other formats, variants, etc., then we trust that you meant + # to provide a template for this response, too, and we raise + # <tt>ActionController::UnknownFormat</tt> with an explanation. # - # Third, if the current request is an "interactive" browser request (the user - # navigated here by entering the URL in the address bar, submiting a form, - # clicking on a link, etc. as opposed to an XHR or non-browser API request), - # <tt>ActionView::UnknownFormat</tt> is raised to display a helpful error - # message. + # Third, if we DON'T find a template AND the request is a page load in a web + # browser (technically, a non-XHR GET request for an HTML response) where + # you reasonably expect to have rendered a template, then we raise + # <tt>ActionView::UnknownFormat</tt> with an explanation. # - # Finally, it falls back to the same "204 No Content" behavior as API controllers. + # Finally, if we DON'T find a template AND the request isn't a browser page + # load, then we implicitly respond with 204 No Content. module ImplicitRender # :stopdoc: @@ -37,39 +35,23 @@ module ActionController if template_exists?(action_name.to_s, _prefixes, variants: request.variant) render(*args) elsif any_templates?(action_name.to_s, _prefixes) - message = "#{self.class.name}\##{action_name} does not know how to respond " \ - "to this request. There are other templates available for this controller " \ - "action but none of them were suitable for this request.\n\n" \ - "This usually happens when the client requested an unsupported format " \ - "(e.g. requesting HTML content from a JSON endpoint or vice versa), but " \ - "it might also be failing due to other constraints, such as locales or " \ - "variants.\n" - - if request.formats.any? - message << "\nRequested format(s): #{request.formats.join(", ")}" - end - - if request.variant.any? - message << "\nRequested variant(s): #{request.variant.join(", ")}" - end + message = "#{self.class.name}\##{action_name} is missing a template " \ + "for this request format and variant.\n" \ + "\nrequest.formats: #{request.formats.map(&:to_s).inspect}" \ + "\nrequest.variant: #{request.variant.inspect}" raise ActionController::UnknownFormat, message elsif interactive_browser_request? - message = "You did not define any templates for #{self.class.name}\##{action_name}. " \ - "This is not necessarily a problem (e.g. you might be building an API endpoint " \ - "that does not require any templates), and the controller would usually respond " \ - "with `head :no_content` for your convenience.\n\n" \ - "However, you appear to have navigated here from an interactive browser request – " \ - "such as by navigating to this URL directly, clicking on a link or submitting a form. " \ - "Rendering a `head :no_content` in this case could have resulted in unexpected UI " \ - "behavior in the browser.\n\n" \ - "If you expected the `head :no_content` response, you do not need to take any " \ - "actions – requests coming from an XHR (AJAX) request or other non-browser clients " \ - "will receive the \"204 No Content\" response as expected.\n\n" \ - "If you did not expect this behavior, you can resolve this error by adding a " \ - "template for this controller action (usually `#{action_name}.html.erb`) or " \ - "otherwise indicate the appropriate response in the action using `render`, " \ - "`redirect_to`, `head`, etc.\n" + message = "#{self.class.name}\##{action_name} is missing a template " \ + "for this request format and variant.\n\n" \ + "request.formats: #{request.formats.map(&:to_s).inspect}\n" \ + "request.variant: #{request.variant.inspect}\n\n" \ + "NOTE! For XHR/Ajax or API requests, this action would normally " \ + "respond with 204 No Content: an empty white screen. Since you're " \ + "loading it in a web browser, we assume that you expected to " \ + "actually render a template, not… nothing, so we're showing an " \ + "error to be extra-clear. If you expect 204 No Content, carry on. " \ + "That's what you'll get from an XHR or API request. Give it a shot." raise ActionController::UnknownFormat, message else @@ -85,9 +67,8 @@ module ActionController end private - def interactive_browser_request? - request.format == Mime[:html] && !request.xhr? + request.get? && request.format == Mime[:html] && !request.xhr? end end end diff --git a/actionpack/lib/action_controller/metal/instrumentation.rb b/actionpack/lib/action_controller/metal/instrumentation.rb index bf74b39ac4..885ea3fefd 100644 --- a/actionpack/lib/action_controller/metal/instrumentation.rb +++ b/actionpack/lib/action_controller/metal/instrumentation.rb @@ -19,6 +19,7 @@ module ActionController :controller => self.class.name, :action => self.action_name, :params => request.filtered_parameters, + :headers => request.headers, :format => request.format.ref, :method => request.request_method, :path => request.fullpath diff --git a/actionpack/lib/action_controller/metal/mime_responds.rb b/actionpack/lib/action_controller/metal/mime_responds.rb index 173a14a1d2..2e89af1a5e 100644 --- a/actionpack/lib/action_controller/metal/mime_responds.rb +++ b/actionpack/lib/action_controller/metal/mime_responds.rb @@ -198,7 +198,7 @@ module ActionController #:nodoc: _process_format(format) _set_rendered_content_type format response = collector.response - response ? response.call : render({}) + response.call if response else raise ActionController::UnknownFormat end diff --git a/actionpack/lib/action_controller/metal/redirecting.rb b/actionpack/lib/action_controller/metal/redirecting.rb index b13ba06962..3c7cc15627 100644 --- a/actionpack/lib/action_controller/metal/redirecting.rb +++ b/actionpack/lib/action_controller/metal/redirecting.rb @@ -84,7 +84,7 @@ module ActionController # redirect_back fallback_location: proc { edit_post_url(@post) } # # All options that can be passed to <tt>redirect_to</tt> are accepted as - # options and the behavior is indetical. + # options and the behavior is identical. def redirect_back(fallback_location:, **args) if referer = request.headers["Referer"] redirect_to referer, **args diff --git a/actionpack/lib/action_controller/metal/request_forgery_protection.rb b/actionpack/lib/action_controller/metal/request_forgery_protection.rb index b2f0b382b9..5793e28175 100644 --- a/actionpack/lib/action_controller/metal/request_forgery_protection.rb +++ b/actionpack/lib/action_controller/metal/request_forgery_protection.rb @@ -213,7 +213,7 @@ module ActionController #:nodoc: if !verified_request? if logger && log_warning_on_csrf_failure - logger.warn "Can't verify CSRF token authenticity" + logger.warn "Can't verify CSRF token authenticity." end handle_unverified_request end diff --git a/actionpack/lib/action_controller/metal/rescue.rb b/actionpack/lib/action_controller/metal/rescue.rb index 81b9a7b9ed..0621a7368c 100644 --- a/actionpack/lib/action_controller/metal/rescue.rb +++ b/actionpack/lib/action_controller/metal/rescue.rb @@ -7,8 +7,12 @@ module ActionController #:nodoc: include ActiveSupport::Rescuable def rescue_with_handler(exception) - if exception.cause && handler_for_rescue(exception.cause) - exception = exception.cause + if exception.cause + handler_index = index_of_handler_for_rescue(exception) || Float::INFINITY + cause_handler_index = index_of_handler_for_rescue(exception.cause) + if cause_handler_index && cause_handler_index <= handler_index + exception = exception.cause + end end super(exception) end diff --git a/actionpack/lib/action_controller/metal/strong_parameters.rb b/actionpack/lib/action_controller/metal/strong_parameters.rb index a01110d474..f9b80dd805 100644 --- a/actionpack/lib/action_controller/metal/strong_parameters.rb +++ b/actionpack/lib/action_controller/metal/strong_parameters.rb @@ -184,6 +184,13 @@ module ActionController # Returns an unsafe, unfiltered # <tt>ActiveSupport::HashWithIndifferentAccess</tt> representation of this # parameter. + # + # params = ActionController::Parameters.new({ + # name: 'Senjougahara Hitagi', + # oddity: 'Heavy stone crab' + # }) + # params.to_unsafe_h + # # => {"name"=>"Senjougahara Hitagi", "oddity" => "Heavy stone crab"} def to_unsafe_h convert_parameters_to_hashes(@parameters, :to_unsafe_h) end @@ -430,6 +437,21 @@ module ActionController ) end + if Hash.method_defined?(:dig) + # Extracts the nested parameter from the given +keys+ by calling +dig+ + # at each step. Returns +nil+ if any intermediate step is +nil+. + # + # params = ActionController::Parameters.new(foo: { bar: { baz: 1 } }) + # params.dig(:foo, :bar, :baz) # => 1 + # params.dig(:foo, :zot, :xyz) # => nil + # + # params2 = ActionController::Parameters.new(foo: [10, 11, 12]) + # params2.dig(:foo, 1) # => 11 + def dig(*keys) + convert_value_to_parameters(@parameters.dig(*keys)) + end + end + # Returns a new <tt>ActionController::Parameters</tt> instance that # includes only the given +keys+. If the given +keys+ # don't exist, returns an empty hash. @@ -734,6 +756,10 @@ module ActionController end end + def non_scalar?(value) + value.is_a?(Array) || value.is_a?(Parameters) + end + EMPTY_ARRAY = [] def hash_filter(params, filter) filter = filter.with_indifferent_access @@ -748,7 +774,7 @@ module ActionController array_of_permitted_scalars?(self[key]) do |val| params[key] = val end - else + elsif non_scalar?(value) # Declaration { user: :name } or { user: [:name, :age, { address: ... }] }. params[key] = each_element(value) do |element| element.permit(*Array.wrap(filter[key])) @@ -799,7 +825,8 @@ module ActionController # end # # In order to use <tt>accepts_nested_attributes_for</tt> with Strong \Parameters, you - # will need to specify which nested attributes should be whitelisted. + # will need to specify which nested attributes should be whitelisted. You might want + # to allow +:id+ and +:_destroy+, see ActiveRecord::NestedAttributes for more information. # # class Person # has_many :pets @@ -819,7 +846,7 @@ module ActionController # # It's mandatory to specify the nested attributes that should be whitelisted. # # If you use `permit` with just the key that points to the nested attributes hash, # # it will return an empty hash. - # params.require(:person).permit(:name, :age, pets_attributes: [ :name, :category ]) + # params.require(:person).permit(:name, :age, pets_attributes: [ :id, :name, :category ]) # end # end # |