detect spam sites

models/site.rb

@@ -70,6 +70,8 @@ class Site < Sequel::Model
     /PHP\.Hide/
   ]
 
+  SPAM_MATCH_REGEX = /#{$config['spam_smart_filter'].join('|')}/i
+
   EMAIL_SANITY_REGEX = /.+@.+\..+/i
 
   EDITABLE_FILE_EXT = /html|htm|txt|js|css|md/i
@@ -342,6 +344,24 @@ class Site < Sequel::Model
       return false
     end
 
+    open(uploaded.path) { |f| matches = f.grep SPAM_MATCH_REGEX }
+
+    if !matches.empty?
+      EmailWorker.perform_async({
+        from: 'web@neocities.org',
+        reply_to: email,
+        to: 'spam@neocities.org',
+        subject: "[Neocities SPAM]: #{username}",
+        body: %{
+          #{username}
+          <br>
+          https://#{self.host}#{relative_path}
+          <br>
+          <a href="https://#{self.host}/#{relative_path}">link</a>
+        }
+      })
+    end
+
     pathname = Pathname(path)
     if pathname.basename.to_s == 'index.html'
       new_title = Nokogiri::HTML(File.read(uploaded.path)).css('title').first.text