Add methods to route and respond to WebDAV requests

lib/calligraphy/rails/web_dav_requests_controller.rb

@@ -1,6 +1,49 @@
 module Calligraphy::Rails
   class WebDavRequestsController < ActionController::Base
+    before_action :verify_resource_scope
+    before_action :set_resource
+
     def invoke_method
+      method = request.request_method.downcase
+
+      if check_preconditions
+        if method == 'head'
+          status = get head: true
+        elsif Calligraphy.allowed_methods.include? method
+          status, body = send method
+        else
+          status = :method_not_allowed
+        end
+
+        send_response status: status, body: body
+      else
+        send_response status: :precondition_failed
+      end
+    end
+
+    private
+
+    def verify_resource_scope
+      head :forbidden if params[:resource].include? '..'
+    end
+
+    def set_resource
+      resource_id = if params[:format]
+        [params[:resource], params[:format]].join '.'
+      else
+        params[:resource]
+      end
+
+      @resource_class = params[:resource_class]
+      @resource = @resource_class.new resource: resource_id, req: request
+    end
+
+    def send_response(status:, body: nil)
+      if body.nil?
+        head status
+      else
+        render body: body, status: status
+      end
     end
   end
 end