Adding a restriction to prevent more than 2000 nodes to be added to any way. Tests still need to be written. Capabilities api request also updated.

app/controllers/api_controller.rb

@@ -281,6 +281,9 @@ class ApiController < ApplicationController
     tracepoints = XML::Node.new 'tracepoints'
     tracepoints['per_page'] = APP_CONFIG['tracepoints_per_page'].to_s
     api << tracepoints
+    waynodes = XML::Node.new 'waynodes'
+    waynodes['maximum'] = APP_CONFIG['max_number_of_way_nodes'].to_s
+    api << waynodes
     
     doc.root << api
 

app/models/way.rb

@@ -238,6 +238,9 @@ class Way < ActiveRecord::Base
 
   def preconditions_ok?
     return false if self.nds.empty?
+    if self.nds.length > APP_CONFIG['max_number_of_way_nodes']
+      raise OSM::APITooManyWayNodesError.new(self.nds.count, APP_CONFIG['max_number_of_way_nodes'])
+    end
     self.nds.each do |n|
       node = Node.find(:first, :conditions => ["id = ?", n])
       unless node and node.visible