.net 防止盗链 防止迅雷

.net 防止盗链 防止迅雷

• 分类: C#
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.net 防止盗链 防止迅雷

此程序需要有自己的服务器 或者能够操作 Iis的 IsAPI扩展

我使用的方法就是访问 context.Request.UrlReferrer.Host; 就是访问访问本网站的上一个链接是什么

是否是可以下载网站的Host 如果是可以下载 如果不是 不可以下载!

新建 CeHandler 类 继承 IHttpHandler 接口 实现接口方法

  public class CeHandler:IHttpHandler
  {
    #region IHttpHandler 成
员

    public bool IsReusable
    {
      get { return true; }
    }

    public void ProcessRequest(HttpContext context)
    {
      string my = string.Empty;
      my = "jeanwen.com";
      string host = string.Empty;

      try
      {
        host = context.Request.UrlReferrer.Host;
      }
      catch (Exception e)
      {
        context.Response.End();
      }

      int xt = host.IndexOf(my);
      if (xt >= 0)
      {
        string url = context.Request.Url.ToString();
        context.Response.Clear();

        url = url.Replace("http://", "");
        int x = url.IndexOf("/");


        if (x > 0)
        {
          url = url.Substring(x + 1);
          string filePath = context.Server.MapPath("~/") + url;

          FileInfo file = new System.IO.FileInfo(filePath);

          context.Response.AddHeader("Content-Disposition", "filename=" + file.Name);
          context.Response.AddHeader("Content-Length", file.Length.ToString());

          context.Response.ContentType = "application/octet-stream";
          context.Response.WriteFile(file.FullName);

        }
        context.Response.End();
      }
      else
      {
         context.Response.End();
      }
    }

    #endregion
  }

  public class CeHandler:IHttpHandler
  {
    #region IHttpHandler 成员

    public bool IsReusable
    {
      get { return true; }
    }

    public void ProcessRequest(HttpContext context)
    {
      string my = string.Empty;
      my = "jeanwen.com";
      string host = string.Empty;

      try
      {
        host = context.Request.UrlReferrer.Host;
      }
      catch (Exception e)
      {
        context.Response.End();
      }

      int xt = host.IndexOf(my);
      if (xt >= 0)
      {
        string url = context.Request.Url.ToString();
        context.Response.Clear();

        url = url.Replace("http://", "");
        int x = url.IndexOf("/");


        if (x > 0)
        {
          url = url.Substring(x + 1);
          string filePath = context.Server.MapPath("~/") + url;

          FileInfo file = new System.IO.FileInfo(filePath);

          context.Response.AddHeader("Content-Disposition", "filename=" + file.Name);
          context.Response.AddHeader("Content-Length", file.Length.ToString());

          context.Response.ContentType = "application/octet-stream";
          context.Response.WriteFile(file.FullName);

        }
        context.Response.End();
      }
      else
      {
         context.Response.End();
      }
    }

    #endregion
  }

WebConfig.config 添加

  <httpHandlers>
   <add verb="*" path="*.rar" type="MyChy.Soft.CeHandler, MyChy.Soft"/>
   <add verb="*" path="*.zip" type="MyChy.Soft.CeHandler, MyChy.Soft"/>
  </httpHandlers>

  <httpHandlers>
   <add verb="*" path="*.rar" type="MyChy.Soft.CeHandler, MyChy.Soft"/>
   <add verb="*" path="*.zip" type="MyChy.Soft.CeHandler, MyChy.Soft"/>
  </httpHandlers>

IIS 设置

点击 配置

点击添加

可执行文件 :c:\windows\microsoft.net\framework\v2.0.50727\aspnet_isapi.dll