FEATURE: white_listed_spam_host_domains for domains that are not blocked for spam

BUGFIX: bypass host spam detection for current host

app/models/post.rb

@@ -158,8 +158,29 @@ class Post < ActiveRecord::Base
     @acting_user = pu
   end
 
+  def whitelisted_spam_hosts
+
+    hosts = SiteSetting
+              .white_listed_spam_host_domains
+              .split(",")
+              .map{|h| h.strip}
+              .reject{|h| !h.include?(".")}
+
+    hosts << GlobalSetting.hostname
+
+  end
+
   def total_hosts_usage
     hosts = linked_hosts.clone
+    whitelisted = whitelisted_spam_hosts
+
+    hosts.reject! do |h|
+      whitelisted.any? do |w|
+        h.end_with?(w)
+      end
+    end
+
+    return hosts if hosts.length == 0
 
     TopicLink.where(domain: hosts.keys, user_id: acting_user.id)
              .group(:domain, :post_id)

config/locales/server.en.yml

@@ -774,6 +774,8 @@ en:
     privacy_policy_url: "If you have a Privacy Policy document hosted elsewhere that you want to use, provide the full URL here."
 
     newuser_spam_host_threshold: "How many times a new user can post a link to the same host within their `newuser_spam_host_posts` posts before being considered spam."
+
+    white_listed_spam_host_domains: "A comma delimited list of domains excluded from spam host testing, new users will be able to create an unrestricted count of posts with links to this domain"
     staff_like_weight: "Extra weighting factor given to likes when performed by staff."
 
     reply_by_email_enabled: "Enable replying to topics via email"

config/site_settings.yml

@@ -333,6 +333,7 @@ spam:
   notify_mods_when_user_blocked: false
   flag_sockpuppets: true
   newuser_spam_host_threshold: 3
+  white_listed_spam_host_domains: ""
 
 rate_limits:
   unique_posts_mins:

spec/models/post_spec.rb

@@ -795,4 +795,24 @@ describe Post do
     end
   end
 
+
+  describe "has_host_spam" do
+    it "correctly detects host spam" do
+      post = Fabricate(:post, raw: "hello from my site http://www.somesite.com
+                       http://#{GlobalSetting.hostname} ")
+
+      post.total_hosts_usage.should == {"www.somesite.com" => 1}
+      post.acting_user.trust_level = 0
+
+      post.has_host_spam?.should == false
+
+      SiteSetting.stubs(:newuser_spam_host_threshold).returns(1)
+
+      post.has_host_spam?.should == true
+
+      SiteSetting.stubs(:white_listed_spam_host_domains).returns("bla.com,boo.com , somesite.com ")
+      post.has_host_spam?.should == false
+    end
+  end
+
 end