RobotDefinition.cs :  » Bloggers » dasBlog » newtelligence » DasBlog » Web » Core » C# / CSharp Open Source

using System;
using System.Collections.Specialized;
using System.IO;
using System.Web.Caching;
using System.Xml.Serialization;

using newtelligence.DasBlog.Runtime;

namespace newtelligence.DasBlog.Web.Core{
  [XmlType(Namespace="urn:newtelligence-com:dasblog:config")]
  [XmlRoot(Namespace="urn:newtelligence-com:dasblog:config")]
  public class RobotDefinition
  {
    StringCollection _domains;
    StringCollection _userAgents;

    public StringCollection Domains
    {
      get { return _domains; }
      set { _domains = value; }
    }

    public StringCollection UserAgents
    {
      get { return _userAgents; }
      set { _userAgents = value; }
    }

    public bool IsRobot(LogDataItem logDataItem)
    {
      if (Domains.Contains(logDataItem.UserDomain.Trim()) ||
        IsRobotUserAgent(logDataItem.UserAgent.Trim()))
      {
        return true;
      }

      return false;
    }

    bool IsRobotUserAgent(string userAgent)
    {
      if (String.IsNullOrEmpty(userAgent))
      {
        return false;
      }

      foreach (string robotUserAgent in UserAgents)
      {
        if (userAgent.IndexOf(robotUserAgent, StringComparison.InvariantCultureIgnoreCase) != -1)
        {
          return true;
        }
      }

      return false;
    }

    #region Get Robots Definition
    public static RobotDefinition GetRobotDefinition()
    {
      DataCache cache = CacheFactory.GetCache();

      RobotDefinition definition = (RobotDefinition) cache["RobotDefinition"];

      if (definition == null)
      {
        definition = GetRobotDefinition(GetConfigFilePathFromCurrentContext());

        cache.Insert("RobotDefinition", definition, new CacheDependency(GetConfigFilePathFromCurrentContext()));
      }

      return definition;
    }

    public static RobotDefinition GetRobotDefinition(string configPath)
    {
      RobotDefinition definition;
      XmlSerializer ser = new XmlSerializer(typeof(RobotDefinition));

      using (StreamReader reader = new StreamReader(configPath))
      {
        //XmlNamespaceUpgradeReader xnur = new XmlNamespaceUpgradeReader(reader, "", "urn:newtelligence-com:dasblog:config");
        definition = ser.Deserialize(reader) as RobotDefinition;
      }

      return definition;
    }

    // FIX: hardcoded path
    static string GetConfigFilePathFromCurrentContext()
    {
      return SiteUtilities.MapPath("~/SiteConfig/robots.config");
    }
    #endregion
  }
}