2013-10-09 02:22:41 -04:00
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require 'current_user'
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2013-10-09 00:10:37 -04:00
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require_dependency 'canonical_url'
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2013-02-05 14:16:51 -05:00
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require_dependency 'discourse'
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require_dependency 'custom_renderer'
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2013-10-09 00:10:37 -04:00
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require_dependency 'archetype'
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2013-02-05 14:16:51 -05:00
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require_dependency 'rate_limiter'
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class ApplicationController < ActionController::Base
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include CurrentUser
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2013-02-13 06:04:43 -05:00
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include CanonicalURL::ControllerExtensions
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2013-02-05 14:16:51 -05:00
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serialization_scope :guardian
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protect_from_forgery
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2013-07-29 01:13:13 -04:00
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# Default Rails 3.2 lets the request through with a blank session
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# we are being more pedantic here and nulling session / current_user
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# and then raising a CSRF exception
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def handle_unverified_request
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# NOTE: API key is secret, having it invalidates the need for a CSRF token
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unless is_api?
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super
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clear_current_user
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2013-08-27 01:56:12 -04:00
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render text: "['BAD CSRF']", status: 403
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2013-07-29 01:13:13 -04:00
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end
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end
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2013-08-27 14:57:42 -04:00
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before_filter :set_mobile_view
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2013-02-05 14:16:51 -05:00
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before_filter :inject_preview_style
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before_filter :block_if_maintenance_mode
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before_filter :authorize_mini_profiler
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before_filter :store_incoming_links
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before_filter :preload_json
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before_filter :check_xhr
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2013-02-28 14:31:39 -05:00
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before_filter :set_locale
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2013-06-04 18:32:36 -04:00
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before_filter :redirect_to_login_if_required
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2013-02-07 10:45:24 -05:00
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2013-02-05 14:16:51 -05:00
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rescue_from Exception do |exception|
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2013-02-07 10:45:24 -05:00
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unless [ ActiveRecord::RecordNotFound, ActionController::RoutingError,
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2013-02-05 14:16:51 -05:00
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ActionController::UnknownController, AbstractController::ActionNotFound].include? exception.class
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2013-02-07 10:45:24 -05:00
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begin
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2013-02-05 14:16:51 -05:00
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ErrorLog.report_async!(exception, self, request, current_user)
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2013-02-07 10:45:24 -05:00
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rescue
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2013-02-05 14:16:51 -05:00
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# dont care give up
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end
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end
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raise
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end
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2013-02-07 10:45:24 -05:00
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2013-02-05 14:16:51 -05:00
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# Some exceptions
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class RenderEmpty < Exception; end
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# Render nothing unless we are an xhr request
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rescue_from RenderEmpty do
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render 'default/empty'
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end
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# If they hit the rate limiter
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rescue_from RateLimiter::LimitExceeded do |e|
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time_left = ""
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if e.available_in < 1.minute.to_i
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time_left = I18n.t("rate_limiter.seconds", count: e.available_in)
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elsif e.available_in < 1.hour.to_i
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2013-02-07 10:45:24 -05:00
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time_left = I18n.t("rate_limiter.minutes", count: (e.available_in / 1.minute.to_i))
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2013-02-05 14:16:51 -05:00
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else
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2013-02-07 10:45:24 -05:00
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time_left = I18n.t("rate_limiter.hours", count: (e.available_in / 1.hour.to_i))
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2013-02-05 14:16:51 -05:00
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end
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render json: {errors: [I18n.t("rate_limiter.too_many_requests", time_left: time_left)]}, status: 429
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end
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rescue_from Discourse::NotLoggedIn do |e|
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raise e if Rails.env.test?
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2013-07-01 14:00:06 -04:00
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redirect_to "/"
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2013-02-05 14:16:51 -05:00
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end
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rescue_from Discourse::NotFound do
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2013-06-20 11:47:33 -04:00
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rescue_discourse_actions("[error: 'not found']", 404)
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2013-02-05 14:16:51 -05:00
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end
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rescue_from Discourse::InvalidAccess do
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2013-06-20 11:47:33 -04:00
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rescue_discourse_actions("[error: 'invalid access']", 403)
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end
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def rescue_discourse_actions(message, error)
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2013-05-30 14:46:02 -04:00
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if request.format && request.format.json?
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2013-07-11 16:38:46 -04:00
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render status: error, layout: false, text: (error == 404) ? build_not_found_page(error) : message
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2013-05-30 14:46:02 -04:00
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else
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2013-07-11 16:38:46 -04:00
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render text: build_not_found_page(error, 'no_js')
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2013-05-30 14:46:02 -04:00
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end
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2013-02-05 14:16:51 -05:00
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end
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2013-02-28 14:31:39 -05:00
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def set_locale
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I18n.locale = SiteSetting.default_locale
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end
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2013-02-05 14:16:51 -05:00
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def store_preloaded(key, json)
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@preloaded ||= {}
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2013-02-25 11:42:20 -05:00
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# I dislike that there is a gsub as opposed to a gsub!
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# but we can not be mucking with user input, I wonder if there is a way
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2013-02-11 01:28:21 -05:00
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# to inject this safty deeper in the library or even in AM serializer
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@preloaded[key] = json.gsub("</", "<\\/")
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2013-02-05 14:16:51 -05:00
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end
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# If we are rendering HTML, preload the session data
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def preload_json
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2013-06-04 12:56:12 -04:00
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# We don't preload JSON on xhr or JSON request
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return if request.xhr?
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2013-02-05 14:16:51 -05:00
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2013-08-05 16:25:44 -04:00
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preload_anonymous_data
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2013-06-04 12:56:12 -04:00
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2013-08-05 16:25:44 -04:00
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if current_user
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preload_current_user_data
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current_user.sync_notification_channel_position
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2013-02-05 14:16:51 -05:00
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end
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end
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2013-08-27 14:57:42 -04:00
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def set_mobile_view
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session[:mobile_view] = params[:mobile_view] if params.has_key?(:mobile_view)
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end
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2013-02-05 14:16:51 -05:00
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def inject_preview_style
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style = request['preview-style']
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2013-02-07 10:45:24 -05:00
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session[:preview_style] = style if style
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2013-02-05 14:16:51 -05:00
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end
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def guardian
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@guardian ||= Guardian.new(current_user)
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end
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2013-05-29 16:49:34 -04:00
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def serialize_data(obj, serializer, opts={})
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2013-02-05 14:16:51 -05:00
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# If it's an array, apply the serializer as an each_serializer to the elements
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serializer_opts = {scope: guardian}.merge!(opts)
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if obj.is_a?(Array)
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serializer_opts[:each_serializer] = serializer
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2013-05-29 16:49:34 -04:00
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ActiveModel::ArraySerializer.new(obj, serializer_opts).as_json
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2013-02-07 10:45:24 -05:00
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else
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2013-05-29 16:49:34 -04:00
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serializer.new(obj, serializer_opts).as_json
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2013-02-05 14:16:51 -05:00
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end
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2013-05-29 16:49:34 -04:00
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end
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2013-02-05 14:16:51 -05:00
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2013-05-29 16:49:34 -04:00
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# This is odd, but it seems that in Rails `render json: obj` is about
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# 20% slower than calling MultiJSON.dump ourselves. I'm not sure why
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# Rails doesn't call MultiJson.dump when you pass it json: obj but
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# it seems we don't need whatever Rails is doing.
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def render_serialized(obj, serializer, opts={})
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render_json_dump(serialize_data(obj, serializer, opts))
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2013-02-05 14:16:51 -05:00
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end
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def render_json_dump(obj)
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render json: MultiJson.dump(obj)
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end
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2013-02-06 11:55:54 -05:00
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def can_cache_content?
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# Don't cache unless we're in production mode
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2013-04-11 02:24:08 -04:00
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return false unless Rails.env.production? || Rails.env == "profile"
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2013-02-06 11:55:54 -05:00
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# Don't cache logged in users
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return false if current_user.present?
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true
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end
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# Our custom cache method
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def discourse_expires_in(time_length)
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return unless can_cache_content?
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expires_in time_length, public: true
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end
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2013-02-05 14:16:51 -05:00
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# Helper method - if no logged in user (anonymous), use Rails' conditional GET
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# support. Should be very fast behind a cache.
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def anonymous_etag(*args)
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2013-02-06 11:55:54 -05:00
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if can_cache_content?
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2013-02-05 14:16:51 -05:00
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yield if stale?(*args)
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# Add a one minute expiry
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2013-02-06 12:07:22 -05:00
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expires_in 1.minute, public: true
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2013-02-05 14:16:51 -05:00
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else
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yield
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end
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end
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2013-05-22 11:20:16 -04:00
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def fetch_user_from_params
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username_lower = params[:username].downcase
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username_lower.gsub!(/\.json$/, '')
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user = User.where(username_lower: username_lower).first
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raise Discourse::NotFound.new if user.blank?
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guardian.ensure_can_see!(user)
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user
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end
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2013-09-04 11:53:00 -04:00
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def post_ids_including_replies
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post_ids = params[:post_ids].map {|p| p.to_i}
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if params[:reply_post_ids]
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post_ids << PostReply.where(post_id: params[:reply_post_ids].map {|p| p.to_i}).pluck(:reply_id)
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post_ids.flatten!
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post_ids.uniq!
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end
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post_ids
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end
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2013-02-05 14:16:51 -05:00
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private
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2013-08-05 16:25:44 -04:00
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def preload_anonymous_data
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store_preloaded("site", Site.cached_json(guardian))
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store_preloaded("siteSettings", SiteSetting.client_settings_json)
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end
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def preload_current_user_data
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store_preloaded("currentUser", MultiJson.dump(CurrentUserSerializer.new(current_user, root: false)))
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serializer = ActiveModel::ArraySerializer.new(TopicTrackingState.report([current_user.id]), each_serializer: TopicTrackingStateSerializer)
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store_preloaded("topicTrackingStates", MultiJson.dump(serializer))
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end
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2013-02-05 14:16:51 -05:00
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def render_json_error(obj)
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if obj.present?
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render json: MultiJson.dump(errors: obj.errors.full_messages), status: 422
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else
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render json: MultiJson.dump(errors: [I18n.t('js.generic_error')]), status: 422
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end
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end
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def success_json
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{success: 'OK'}
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end
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def failed_json
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{failed: 'FAILED'}
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end
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def json_result(obj, opts={})
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if yield(obj)
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json = success_json
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# If we were given a serializer, add the class to the json that comes back
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if opts[:serializer].present?
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2013-04-11 20:07:46 -04:00
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json[obj.class.name.underscore] = opts[:serializer].new(obj, scope: guardian).serializable_hash
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2013-02-05 14:16:51 -05:00
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end
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render json: MultiJson.dump(json)
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else
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render_json_error(obj)
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end
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2013-02-07 10:45:24 -05:00
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end
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2013-02-05 14:16:51 -05:00
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def block_if_maintenance_mode
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if Discourse.maintenance_mode?
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if request.format.json?
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2013-04-07 12:14:50 -04:00
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render status: 503, json: failed_json.merge(message: I18n.t('site_under_maintenance'))
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2013-02-05 14:16:51 -05:00
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else
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render status: 503, file: File.join( Rails.root, 'public', '503.html' ), layout: false
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end
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end
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end
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def mini_profiler_enabled?
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2013-03-04 19:42:44 -05:00
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defined?(Rack::MiniProfiler) && current_user.try(:admin?)
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2013-02-05 14:16:51 -05:00
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end
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def authorize_mini_profiler
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return unless mini_profiler_enabled?
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Rack::MiniProfiler.authorize_request
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end
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def store_incoming_links
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2013-04-26 02:18:41 -04:00
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IncomingLink.add(request,current_user) unless request.xhr?
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2013-02-05 14:16:51 -05:00
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end
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2013-02-07 10:45:24 -05:00
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def check_xhr
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2013-08-05 16:25:44 -04:00
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# bypass xhr check on PUT / POST / DELETE provided api key is there, otherwise calling api is annoying
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return if !request.get? && api_key_valid?
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raise RenderEmpty.new unless ((request.format && request.format.json?) || request.xhr?)
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2013-02-05 14:16:51 -05:00
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end
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def ensure_logged_in
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raise Discourse::NotLoggedIn.new unless current_user.present?
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end
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2013-02-07 10:45:24 -05:00
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2013-06-04 18:32:36 -04:00
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def redirect_to_login_if_required
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redirect_to :login if SiteSetting.login_required? && !current_user
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end
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2013-07-11 16:38:46 -04:00
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def build_not_found_page(status=404, layout=false)
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2013-06-12 20:27:17 -04:00
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@top_viewed = TopicQuery.top_viewed(10)
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@recent = TopicQuery.recent(10)
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2013-05-30 14:46:02 -04:00
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@slug = params[:slug].class == String ? params[:slug] : ''
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2013-06-06 14:41:27 -04:00
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@slug = (params[:id].class == String ? params[:id] : '') if @slug.blank?
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2013-05-30 14:46:02 -04:00
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@slug.gsub!('-',' ')
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2013-07-11 16:38:46 -04:00
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render_to_string status: status, layout: layout, formats: [:html], template: '/exceptions/not_found'
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2013-05-30 14:46:02 -04:00
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end
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2013-06-19 22:11:14 -04:00
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protected
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2013-06-17 02:09:59 -04:00
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def api_key_valid?
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request["api_key"] && SiteSetting.api_key_valid?(request["api_key"])
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end
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2013-06-19 22:11:14 -04:00
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# returns an array of integers given a param key
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# returns nil if key is not found
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def param_to_integer_list(key, delimiter = ',')
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if params[key]
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params[key].split(delimiter).map(&:to_i)
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2013-02-05 14:16:51 -05:00
|
|
|
end
|