mirror of
https://github.com/discourse/discourse.git
synced 2024-12-15 22:22:18 +08:00
100 lines
2.9 KiB
Ruby
100 lines
2.9 KiB
Ruby
require_dependency 'discourse'
|
|
require 'ipaddr'
|
|
require 'url_helper'
|
|
|
|
class TopicLinkClick < ActiveRecord::Base
|
|
belongs_to :topic_link, counter_cache: :clicks
|
|
belongs_to :user
|
|
|
|
validates_presence_of :topic_link_id
|
|
validates_presence_of :ip_address
|
|
|
|
WHITELISTED_REDIRECT_HOSTNAMES = Set.new(%W{www.youtube.com youtu.be})
|
|
|
|
# Create a click from a URL and post_id
|
|
def self.create_from(args={})
|
|
url = args[:url]
|
|
return nil if url.blank?
|
|
|
|
uri = URI.parse(url) rescue nil
|
|
|
|
urls = Set.new
|
|
urls << url
|
|
if url =~ /^http/
|
|
urls << url.sub(/^https/, 'http')
|
|
urls << url.sub(/^http:/, 'https:')
|
|
urls << UrlHelper.schemaless(url)
|
|
end
|
|
urls << UrlHelper.absolute_without_cdn(url)
|
|
urls << uri.path if uri.try(:host) == Discourse.current_hostname
|
|
urls << url.sub(/\?.*$/, '') if url.include?('?')
|
|
|
|
# add a cdn link
|
|
if uri && Discourse.asset_host.present?
|
|
cdn_uri = URI.parse(Discourse.asset_host) rescue nil
|
|
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
|
|
|
|
link = TopicLink.select([:id, :user_id])
|
|
|
|
# test for all possible URLs
|
|
link = link.where(Array.new(urls.count, "url = ?").join(" OR "), *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 occurance of the link
|
|
link = link.where(topic_id: args[:topic_id]) if args[:topic_id].present?
|
|
link = link.first
|
|
|
|
# If no link is found...
|
|
unless link.present?
|
|
# ... return the url for relative links or when using the same host
|
|
return url if url =~ /^\// || 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 whitelisted hostnames
|
|
return url if WHITELISTED_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 $redis.setnx(rate_key, "1")
|
|
$redis.expire(rate_key, 1.day.to_i)
|
|
create!(topic_link_id: link.id, user_id: args[:user_id], ip_address: args[:ip])
|
|
end
|
|
|
|
url
|
|
end
|
|
|
|
end
|
|
|
|
# == Schema Information
|
|
#
|
|
# Table name: topic_link_clicks
|
|
#
|
|
# id :integer not null, primary key
|
|
# topic_link_id :integer not null
|
|
# user_id :integer
|
|
# created_at :datetime not null
|
|
# updated_at :datetime not null
|
|
# ip_address :inet not null
|
|
#
|
|
# Indexes
|
|
#
|
|
# by_link (topic_link_id)
|
|
#
|