583 lines
18 KiB
Ruby
583 lines
18 KiB
Ruby
require 'current_user'
|
|
require_dependency 'canonical_url'
|
|
require_dependency 'discourse'
|
|
require_dependency 'custom_renderer'
|
|
require_dependency 'archetype'
|
|
require_dependency 'rate_limiter'
|
|
require_dependency 'crawler_detection'
|
|
require_dependency 'json_error'
|
|
require_dependency 'letter_avatar'
|
|
require_dependency 'distributed_cache'
|
|
require_dependency 'global_path'
|
|
|
|
class ApplicationController < ActionController::Base
|
|
include CurrentUser
|
|
include CanonicalURL::ControllerExtensions
|
|
include JsonError
|
|
include GlobalPath
|
|
|
|
serialization_scope :guardian
|
|
|
|
protect_from_forgery
|
|
|
|
# Default Rails 3.2 lets the request through with a blank session
|
|
# we are being more pedantic here and nulling session / current_user
|
|
# and then raising a CSRF exception
|
|
def handle_unverified_request
|
|
# NOTE: API key is secret, having it invalidates the need for a CSRF token
|
|
unless is_api? || is_user_api?
|
|
super
|
|
clear_current_user
|
|
render text: "['BAD CSRF']", status: 403
|
|
end
|
|
end
|
|
|
|
before_filter :set_current_user_for_logs
|
|
before_filter :clear_notifications
|
|
before_filter :set_locale
|
|
before_filter :set_mobile_view
|
|
before_filter :inject_preview_style
|
|
before_filter :disable_customization
|
|
before_filter :block_if_readonly_mode
|
|
before_filter :authorize_mini_profiler
|
|
before_filter :preload_json
|
|
before_filter :redirect_to_login_if_required
|
|
before_filter :check_xhr
|
|
after_filter :add_readonly_header
|
|
after_filter :perform_refresh_session
|
|
after_filter :dont_cache_page
|
|
|
|
layout :set_layout
|
|
|
|
def has_escaped_fragment?
|
|
SiteSetting.enable_escaped_fragments? && params.key?("_escaped_fragment_")
|
|
end
|
|
|
|
def use_crawler_layout?
|
|
@use_crawler_layout ||= (has_escaped_fragment? || CrawlerDetection.crawler?(request.user_agent) || params.key?("print"))
|
|
end
|
|
|
|
def add_readonly_header
|
|
response.headers['Discourse-Readonly'] = 'true' if Discourse.readonly_mode?
|
|
end
|
|
|
|
def perform_refresh_session
|
|
refresh_session(current_user)
|
|
end
|
|
|
|
def dont_cache_page
|
|
if !response.headers["Cache-Control"] && response.cache_control.blank?
|
|
response.headers["Cache-Control"] = "no-store, must-revalidate, no-cache, private"
|
|
end
|
|
end
|
|
|
|
def slow_platform?
|
|
request.user_agent =~ /Android/
|
|
end
|
|
|
|
def set_layout
|
|
use_crawler_layout? ? 'crawler' : 'application'
|
|
end
|
|
|
|
# Some exceptions
|
|
class RenderEmpty < StandardError; end
|
|
|
|
# Render nothing
|
|
rescue_from RenderEmpty do
|
|
render 'default/empty'
|
|
end
|
|
|
|
def render_rate_limit_error(e)
|
|
render_json_error e.description, type: :rate_limit, status: 429
|
|
end
|
|
|
|
# If they hit the rate limiter
|
|
rescue_from RateLimiter::LimitExceeded do |e|
|
|
render_rate_limit_error(e)
|
|
end
|
|
|
|
rescue_from PG::ReadOnlySqlTransaction do |e|
|
|
Discourse.received_readonly!
|
|
raise Discourse::ReadOnly
|
|
end
|
|
|
|
rescue_from Discourse::NotLoggedIn do |e|
|
|
raise e if Rails.env.test?
|
|
if (request.format && request.format.json?) || request.xhr? || !request.get?
|
|
rescue_discourse_actions(:not_logged_in, 403, true)
|
|
else
|
|
rescue_discourse_actions(:not_found, 404)
|
|
end
|
|
end
|
|
|
|
def self.last_ar_cache_reset
|
|
@last_ar_cache_reset
|
|
end
|
|
|
|
def self.last_ar_cache_reset=(val)
|
|
@last_ar_cache_reset
|
|
end
|
|
|
|
rescue_from ActiveRecord::StatementInvalid do |e|
|
|
|
|
last_cache_reset = ApplicationController.last_ar_cache_reset
|
|
|
|
if e.message =~ /UndefinedColumn/ && (last_cache_reset.nil? || last_cache_reset < 30.seconds.ago)
|
|
Rails.logger.warn "Clear Active Record cache cause schema appears to have changed!"
|
|
|
|
ApplicationController.last_ar_cache_reset = Time.zone.now
|
|
|
|
ActiveRecord::Base.connection.query_cache.clear
|
|
(ActiveRecord::Base.connection.tables - %w[schema_migrations]).each do |table|
|
|
table.classify.constantize.reset_column_information rescue nil
|
|
end
|
|
end
|
|
|
|
raise e
|
|
end
|
|
|
|
class PluginDisabled < StandardError; end
|
|
|
|
# Handles requests for giant IDs that throw pg exceptions
|
|
rescue_from RangeError do |e|
|
|
if e.message =~ /ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Integer/
|
|
rescue_discourse_actions(:not_found, 404)
|
|
else
|
|
raise e
|
|
end
|
|
end
|
|
|
|
rescue_from Discourse::NotFound, PluginDisabled do
|
|
rescue_discourse_actions(:not_found, 404)
|
|
end
|
|
|
|
rescue_from Discourse::InvalidAccess do
|
|
rescue_discourse_actions(:invalid_access, 403, true)
|
|
end
|
|
|
|
rescue_from Discourse::ReadOnly do
|
|
render_json_error I18n.t('read_only_mode_enabled'), type: :read_only, status: 503
|
|
end
|
|
|
|
def rescue_discourse_actions(type, status_code, include_ember=false)
|
|
|
|
if (request.format && request.format.json?) || (request.xhr?)
|
|
# HACK: do not use render_json_error for topics#show
|
|
if request.params[:controller] == 'topics' && request.params[:action] == 'show'
|
|
return render status: status_code, layout: false, text: (status_code == 404 || status_code == 410) ? build_not_found_page(status_code) : I18n.t(type)
|
|
end
|
|
|
|
render_json_error I18n.t(type), type: type, status: status_code
|
|
else
|
|
render text: build_not_found_page(status_code, include_ember ? 'application' : 'no_ember')
|
|
end
|
|
end
|
|
|
|
# If a controller requires a plugin, it will raise an exception if that plugin is
|
|
# disabled. This allows plugins to be disabled programatically.
|
|
def self.requires_plugin(plugin_name)
|
|
before_filter do
|
|
raise PluginDisabled.new if Discourse.disabled_plugin_names.include?(plugin_name)
|
|
end
|
|
end
|
|
|
|
def set_current_user_for_logs
|
|
if current_user
|
|
Logster.add_to_env(request.env,"username",current_user.username)
|
|
response.headers["X-Discourse-Username"] = current_user.username
|
|
end
|
|
response.headers["X-Discourse-Route"] = "#{controller_name}/#{action_name}"
|
|
end
|
|
|
|
def clear_notifications
|
|
if current_user && !Discourse.readonly_mode?
|
|
|
|
cookie_notifications = cookies['cn'.freeze]
|
|
notifications = request.headers['Discourse-Clear-Notifications'.freeze]
|
|
|
|
if cookie_notifications
|
|
if notifications.present?
|
|
notifications += "," << cookie_notifications
|
|
else
|
|
notifications = cookie_notifications
|
|
end
|
|
end
|
|
|
|
if notifications.present?
|
|
notification_ids = notifications.split(",").map(&:to_i)
|
|
Notification.read(current_user, notification_ids)
|
|
cookies.delete('cn')
|
|
end
|
|
end
|
|
end
|
|
|
|
def set_locale
|
|
if !current_user
|
|
if SiteSetting.set_locale_from_accept_language_header
|
|
I18n.locale = locale_from_header
|
|
else
|
|
I18n.locale = SiteSetting.default_locale
|
|
end
|
|
else
|
|
I18n.locale = current_user.effective_locale
|
|
end
|
|
I18n.ensure_all_loaded!
|
|
end
|
|
|
|
def store_preloaded(key, json)
|
|
@preloaded ||= {}
|
|
# I dislike that there is a gsub as opposed to a gsub!
|
|
# but we can not be mucking with user input, I wonder if there is a way
|
|
# to inject this safty deeper in the library or even in AM serializer
|
|
@preloaded[key] = json.gsub("</", "<\\/")
|
|
end
|
|
|
|
# If we are rendering HTML, preload the session data
|
|
def preload_json
|
|
# We don't preload JSON on xhr or JSON request
|
|
return if request.xhr? || request.format.json?
|
|
|
|
# if we are posting in makes no sense to preload
|
|
return if request.method != "GET"
|
|
|
|
# TODO should not be invoked on redirection so this should be further deferred
|
|
preload_anonymous_data
|
|
|
|
if current_user
|
|
preload_current_user_data
|
|
current_user.sync_notification_channel_position
|
|
end
|
|
end
|
|
|
|
def set_mobile_view
|
|
session[:mobile_view] = params[:mobile_view] if params.has_key?(:mobile_view)
|
|
end
|
|
|
|
def inject_preview_style
|
|
style = request['preview-style']
|
|
|
|
if style.nil?
|
|
session[:preview_style] = cookies[:preview_style]
|
|
else
|
|
cookies.delete(:preview_style)
|
|
|
|
if style.blank? || style == 'default'
|
|
session[:preview_style] = nil
|
|
else
|
|
session[:preview_style] = style
|
|
if request['sticky']
|
|
cookies[:preview_style] = style
|
|
end
|
|
end
|
|
end
|
|
|
|
end
|
|
|
|
def disable_customization
|
|
session[:disable_customization] = params[:customization] == "0" if params.has_key?(:customization)
|
|
end
|
|
|
|
def guardian
|
|
@guardian ||= Guardian.new(current_user)
|
|
end
|
|
|
|
def current_homepage
|
|
current_user ? SiteSetting.homepage : SiteSetting.anonymous_homepage
|
|
end
|
|
|
|
def serialize_data(obj, serializer, opts=nil)
|
|
# If it's an array, apply the serializer as an each_serializer to the elements
|
|
serializer_opts = {scope: guardian}.merge!(opts || {})
|
|
if obj.respond_to?(:to_ary)
|
|
serializer_opts[:each_serializer] = serializer
|
|
ActiveModel::ArraySerializer.new(obj.to_ary, serializer_opts).as_json
|
|
else
|
|
serializer.new(obj, serializer_opts).as_json
|
|
end
|
|
end
|
|
|
|
# This is odd, but it seems that in Rails `render json: obj` is about
|
|
# 20% slower than calling MultiJSON.dump ourselves. I'm not sure why
|
|
# Rails doesn't call MultiJson.dump when you pass it json: obj but
|
|
# it seems we don't need whatever Rails is doing.
|
|
def render_serialized(obj, serializer, opts=nil)
|
|
render_json_dump(serialize_data(obj, serializer, opts), opts)
|
|
end
|
|
|
|
def render_json_dump(obj, opts=nil)
|
|
opts ||= {}
|
|
if opts[:rest_serializer]
|
|
obj['__rest_serializer'] = "1"
|
|
opts.each do |k, v|
|
|
obj[k] = v if k.to_s.start_with?("refresh_")
|
|
end
|
|
|
|
obj['extras'] = opts[:extras] if opts[:extras]
|
|
end
|
|
|
|
render json: MultiJson.dump(obj), status: opts[:status] || 200
|
|
end
|
|
|
|
def can_cache_content?
|
|
current_user.blank? && flash[:authentication_data].blank?
|
|
end
|
|
|
|
# Our custom cache method
|
|
def discourse_expires_in(time_length)
|
|
return unless can_cache_content?
|
|
Middleware::AnonymousCache.anon_cache(request.env, time_length)
|
|
end
|
|
|
|
def fetch_user_from_params(opts=nil, eager_load = [])
|
|
opts ||= {}
|
|
user = if params[:username]
|
|
username_lower = params[:username].downcase.chomp('.json')
|
|
find_opts = { username_lower: username_lower }
|
|
find_opts[:active] = true unless opts[:include_inactive] || current_user.try(:staff?)
|
|
result = User
|
|
(result = result.includes(*eager_load)) if !eager_load.empty?
|
|
result.find_by(find_opts)
|
|
elsif params[:external_id]
|
|
external_id = params[:external_id].chomp('.json')
|
|
SingleSignOnRecord.find_by(external_id: external_id).try(:user)
|
|
end
|
|
raise Discourse::NotFound if user.blank?
|
|
|
|
guardian.ensure_can_see!(user)
|
|
user
|
|
end
|
|
|
|
def post_ids_including_replies
|
|
post_ids = params[:post_ids].map {|p| p.to_i}
|
|
if params[:reply_post_ids]
|
|
post_ids |= PostReply.where(post_id: params[:reply_post_ids].map {|p| p.to_i}).pluck(:reply_id)
|
|
end
|
|
post_ids
|
|
end
|
|
|
|
def no_cookies
|
|
# do your best to ensure response has no cookies
|
|
# longer term we may want to push this into middleware
|
|
headers.delete 'Set-Cookie'
|
|
request.session_options[:skip] = true
|
|
end
|
|
|
|
def permalink_redirect_or_not_found
|
|
url = request.fullpath
|
|
permalink = Permalink.find_by_url(url)
|
|
|
|
if permalink.present?
|
|
# permalink present, redirect to that URL
|
|
if permalink.external_url
|
|
redirect_to permalink.external_url, status: :moved_permanently
|
|
elsif permalink.target_url
|
|
redirect_to "#{Discourse::base_uri}#{permalink.target_url}", status: :moved_permanently
|
|
else
|
|
raise Discourse::NotFound
|
|
end
|
|
else
|
|
# redirect to 404
|
|
raise Discourse::NotFound
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def locale_from_header
|
|
begin
|
|
# Rails I18n uses underscores between the locale and the region; the request
|
|
# headers use hyphens.
|
|
require 'http_accept_language' unless defined? HttpAcceptLanguage
|
|
available_locales = I18n.available_locales.map { |locale| locale.to_s.tr('_', '-') }
|
|
parser = HttpAcceptLanguage::Parser.new(request.env["HTTP_ACCEPT_LANGUAGE"])
|
|
parser.language_region_compatible_from(available_locales).tr('-', '_')
|
|
rescue
|
|
# If Accept-Language headers are not set.
|
|
I18n.default_locale
|
|
end
|
|
end
|
|
|
|
def preload_anonymous_data
|
|
store_preloaded("site", Site.json_for(guardian))
|
|
store_preloaded("siteSettings", SiteSetting.client_settings_json)
|
|
store_preloaded("customHTML", custom_html_json)
|
|
store_preloaded("banner", banner_json)
|
|
store_preloaded("customEmoji", custom_emoji)
|
|
store_preloaded("translationOverrides", I18n.client_overrides_json(I18n.locale))
|
|
end
|
|
|
|
def preload_current_user_data
|
|
store_preloaded("currentUser", MultiJson.dump(CurrentUserSerializer.new(current_user, scope: guardian, root: false)))
|
|
report = TopicTrackingState.report(current_user)
|
|
serializer = ActiveModel::ArraySerializer.new(report, each_serializer: TopicTrackingStateSerializer)
|
|
store_preloaded("topicTrackingStates", MultiJson.dump(serializer))
|
|
end
|
|
|
|
def custom_html_json
|
|
target = view_context.mobile_view? ? :mobile : :desktop
|
|
data = {
|
|
top: SiteCustomization.custom_top(session[:preview_style], target),
|
|
footer: SiteCustomization.custom_footer(session[:preview_style], target)
|
|
}
|
|
|
|
if DiscoursePluginRegistry.custom_html
|
|
data.merge! DiscoursePluginRegistry.custom_html
|
|
end
|
|
|
|
MultiJson.dump(data)
|
|
end
|
|
|
|
def self.banner_json_cache
|
|
@banner_json_cache ||= DistributedCache.new("banner_json")
|
|
end
|
|
|
|
def banner_json
|
|
json = ApplicationController.banner_json_cache["json"]
|
|
|
|
unless json
|
|
topic = Topic.where(archetype: Archetype.banner).limit(1).first
|
|
banner = topic.present? ? topic.banner : {}
|
|
ApplicationController.banner_json_cache["json"] = json = MultiJson.dump(banner)
|
|
end
|
|
|
|
json
|
|
end
|
|
|
|
def custom_emoji
|
|
serializer = ActiveModel::ArraySerializer.new(Emoji.custom, each_serializer: EmojiSerializer)
|
|
MultiJson.dump(serializer)
|
|
end
|
|
|
|
# Render action for a JSON error.
|
|
#
|
|
# obj - a translated string, an ActiveRecord model, or an array of translated strings
|
|
# opts:
|
|
# type - a machine-readable description of the error
|
|
# status - HTTP status code to return
|
|
def render_json_error(obj, opts={})
|
|
opts = { status: opts } if opts.is_a?(Fixnum)
|
|
render json: MultiJson.dump(create_errors_json(obj, opts[:type])), status: opts[:status] || 422
|
|
end
|
|
|
|
def success_json
|
|
{ success: 'OK' }
|
|
end
|
|
|
|
def failed_json
|
|
{ failed: 'FAILED' }
|
|
end
|
|
|
|
def json_result(obj, opts={})
|
|
if yield(obj)
|
|
json = success_json
|
|
|
|
# If we were given a serializer, add the class to the json that comes back
|
|
if opts[:serializer].present?
|
|
json[obj.class.name.underscore] = opts[:serializer].new(obj, scope: guardian).serializable_hash
|
|
end
|
|
|
|
render json: MultiJson.dump(json)
|
|
else
|
|
error_obj = nil
|
|
if opts[:additional_errors]
|
|
error_target = opts[:additional_errors].find do |o|
|
|
target = obj.send(o)
|
|
target && target.errors.present?
|
|
end
|
|
error_obj = obj.send(error_target) if error_target
|
|
end
|
|
render_json_error(error_obj || obj)
|
|
end
|
|
end
|
|
|
|
def mini_profiler_enabled?
|
|
defined?(Rack::MiniProfiler) && (guardian.is_developer? || Rails.env.development?)
|
|
end
|
|
|
|
def authorize_mini_profiler
|
|
return unless mini_profiler_enabled?
|
|
Rack::MiniProfiler.authorize_request
|
|
end
|
|
|
|
def check_xhr
|
|
# bypass xhr check on PUT / POST / DELETE provided api key is there, otherwise calling api is annoying
|
|
return if !request.get? && (is_api? || is_user_api?)
|
|
raise RenderEmpty.new unless ((request.format && request.format.json?) || request.xhr?)
|
|
end
|
|
|
|
def ensure_logged_in
|
|
raise Discourse::NotLoggedIn.new unless current_user.present?
|
|
end
|
|
|
|
def ensure_staff
|
|
raise Discourse::InvalidAccess.new unless current_user && current_user.staff?
|
|
end
|
|
|
|
def ensure_admin
|
|
raise Discourse::InvalidAccess.new unless current_user && current_user.admin?
|
|
end
|
|
|
|
def ensure_wizard_enabled
|
|
raise Discourse::InvalidAccess.new unless SiteSetting.wizard_enabled?
|
|
end
|
|
|
|
def destination_url
|
|
request.original_url unless request.original_url =~ /uploads/
|
|
end
|
|
|
|
def redirect_to_login_if_required
|
|
return if current_user || (request.format.json? && is_api?)
|
|
|
|
# redirect user to the SSO page if we need to log in AND SSO is enabled
|
|
if SiteSetting.login_required?
|
|
if SiteSetting.enable_sso?
|
|
# save original URL in a session so we can redirect after login
|
|
session[:destination_url] = destination_url
|
|
redirect_to path('/session/sso')
|
|
else
|
|
# save original URL in a cookie (javascript redirects after login in this case)
|
|
cookies[:destination_url] = destination_url
|
|
redirect_to :login
|
|
end
|
|
end
|
|
end
|
|
|
|
def block_if_readonly_mode
|
|
return if request.fullpath.start_with?(path "/admin/backups")
|
|
raise Discourse::ReadOnly.new if !(request.get? || request.head?) && Discourse.readonly_mode?
|
|
end
|
|
|
|
def build_not_found_page(status=404, layout=false)
|
|
category_topic_ids = Category.pluck(:topic_id).compact
|
|
@container_class = "wrap not-found-container"
|
|
@top_viewed = TopicQuery.new(nil, {except_topic_ids: category_topic_ids}).list_top_for("monthly").topics.first(10)
|
|
@recent = Topic.where.not(id: category_topic_ids).recent(10)
|
|
@slug = params[:slug].class == String ? params[:slug] : ''
|
|
@slug = (params[:id].class == String ? params[:id] : '') if @slug.blank?
|
|
@slug.tr!('-',' ')
|
|
render_to_string status: status, layout: layout, formats: [:html], template: '/exceptions/not_found'
|
|
end
|
|
|
|
protected
|
|
|
|
def render_post_json(post, add_raw=true)
|
|
post_serializer = PostSerializer.new(post, scope: guardian, root: false)
|
|
post_serializer.add_raw = add_raw
|
|
|
|
counts = PostAction.counts_for([post], current_user)
|
|
if counts && counts = counts[post.id]
|
|
post_serializer.post_actions = counts
|
|
end
|
|
render_json_dump(post_serializer)
|
|
end
|
|
|
|
# returns an array of integers given a param key
|
|
# returns nil if key is not found
|
|
def param_to_integer_list(key, delimiter = ',')
|
|
if params[key]
|
|
params[key].split(delimiter).map(&:to_i)
|
|
end
|
|
end
|
|
|
|
end
|