Class: TopicLinkClick
- Inherits:
-
ActiveRecord::Base
- Object
- ActiveRecord::Base
- TopicLinkClick
- Defined in:
- app/models/topic_link_click.rb
Constant Summary collapse
- ALLOWED_REDIRECT_HOSTNAMES =
Set.new(%W[www.youtube.com youtu.be])
Class Method Summary collapse
-
.create_from(args = {}) ⇒ Object
Create a click from a URL and post_id.
Class Method Details
.create_from(args = {}) ⇒ Object
Create a click from a URL and post_id
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# File 'app/models/topic_link_click.rb', line 15 def self.create_from(args = {}) url = args[:url][0...TopicLink.max_url_length] return nil if url.blank? uri = UrlHelper.relaxed_parse(url) urls = Set.new urls << url if url =~ /\Ahttp/ urls << url.sub(/\Ahttps/, "http") urls << url.sub(/\Ahttp:/, "https:") urls << UrlHelper.schemaless(url) end urls << UrlHelper.absolute_without_cdn(url) urls << uri.path if uri.try(:host) == Discourse.current_hostname query = url.index("?") unless query.nil? endpos = url.index("#") || url.size urls << url[0..query - 1] + url[endpos..-1] end # link can have query params, and analytics can add more to the end: i = url.length while i = url.rindex("&", i - 1) urls << url[0...i] end # add a cdn link if uri if Discourse.asset_host.present? cdn_uri = begin URI.parse(Discourse.asset_host) rescue URI::Error end if cdn_uri && cdn_uri.hostname == uri.hostname && uri.path.starts_with?(cdn_uri.path) is_cdn_link = true urls << uri.path[cdn_uri.path.length..-1] end end if SiteSetting.Upload.s3_cdn_url.present? cdn_uri = begin URI.parse(SiteSetting.Upload.s3_cdn_url) rescue URI::Error end if cdn_uri && cdn_uri.hostname == uri.hostname && uri.path.starts_with?(cdn_uri.path) is_cdn_link = true path = uri.path[cdn_uri.path.length..-1] urls << path urls << "#{Discourse.store.absolute_base_url}#{path}" end end end # test for all possible URLs link = TopicLink.where(url: urls) # Find the forum topic link link = link.where(post_id: args[:post_id]) if args[:post_id].present? # If we don't have a post, just find the first occurrence of the link link = link.where(topic_id: args[:topic_id]) if args[:topic_id].present? # select the TopicLink associated to first url link = link.order( "array_position(ARRAY[#{urls.map { |s| "#{ActiveRecord::Base.connection.quote(s)}" }.join(",")}], url::text)", ).first # If no link is found... if link.blank? # ... return the url for relative links or when using the same host return url if url =~ %r{\A/[^/]} || uri.try(:host) == Discourse.current_hostname # If we have it somewhere else on the site, just allow the redirect. # This is likely due to a onebox of another topic. link = TopicLink.find_by(url: url) return link.url if link.present? return nil unless uri # Only redirect to allowlisted hostnames return url if ALLOWED_REDIRECT_HOSTNAMES.include?(uri.hostname) || is_cdn_link return nil end return url if args[:user_id] && link.user_id == args[:user_id] # Rate limit the click counts to once in 24 hours rate_key = "link-clicks:#{link.id}:#{args[:user_id] || args[:ip]}" if Discourse.redis.setnx(rate_key, "1") Discourse.redis.expire(rate_key, 1.day.to_i) args[:ip] = nil if args[:user_id] create!(topic_link_id: link.id, user_id: args[:user_id], ip_address: args[:ip]) end url end |