Discuz.Forum/IpSearch.cs

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using System;
using System.IO;

using Discuz.Common;
using Discuz.Data;
using Discuz.Config;

namespace Discuz.Forum
{
	/// <summary>
	/// 判断IP归属地类
	/// </summary>
	public class IpSearch
	{
        private static object lockHelper = new object();

		static PHCZIP pcz = new PHCZIP();

		static string filePath = "";
		
		static bool fileIsExsit = true;

		static IpSearch()
		{
			string ipdatadir = BaseConfigs.GetForumPath + "ipdata";
			if (!Directory.Exists(Utils.GetMapPath(ipdatadir)))
			{
				Utils.CreateDir(Utils.GetMapPath(ipdatadir));
			}

			filePath = Utils.GetMapPath(ipdatadir + "/ipdata.config");
			fileIsExsit = Utils.FileExists(filePath);
			
			if(fileIsExsit)
			{
				pcz.SetDbFilePath(filePath);
			}
		}

		/// <summary>
		/// 返回IP查找结果
		/// </summary>
		/// <param name="IPValue">要查找的IP地址</param>
		/// <returns></returns>
        public static string  GetAddressWithIP(string IPValue)
        {
            lock (lockHelper)
            {
                string result = pcz.GetAddressWithIP(IPValue.Trim());

                if (fileIsExsit)
                {
                    if (result.IndexOf("IANA") >= 0)
                        return "";
                    else
                        return result;
                }
                else
                    return null;
            }