ASP.NET虚拟主机安全漏洞解决方案(4)
发表于:2007-06-30来源:作者:点击数:
标签:
iis6操作的例子 using System; using System.DirectoryServices; using System.Collections; using System.Text.RegularExpressions; using System.Text; namespace Wuhy.ToolBox { /// </summary> public class IISAdminLib { #region UserName,Password,
iis6操作的例子
using System;
using System.DirectoryServices;
using System.Collections;
using System.Text.RegularExpressions;
using System.Text;
namespace Wuhy.ToolBox
{
/// </summary>
public class IISAdminLib
{
#region UserName,Password,HostName的定义
public static string HostName
{
get
{
return hostName;
}
set
{
hostName = value;
}
}
public static string UserName
{
get
{
return userName;
}
set
{
userName = value;
}
}
public static string Password
{
get
{
return password;
}
set
{
if(UserName.Length <= 1)
{
throw new ArgumentException("还没有指定好用户名。请先指定用户名");
}
password = value;
}
}
public static void RemoteConfig(string hostName, string userName, string password)
{
HostName = hostName;
UserName = userName;
Password = password;
}
private static string hostName = "localhost";
private static string userName;
private static string password;
#endregion
#region 根据路径构造Entry的方法
/// <summary>
/// 根据是否有用户名来判断是否是远程
服务器。
/// 然后再构造出不同的DirectoryEntry出来
/// </summary>
/// <param name="entPath">DirectoryEntry的路径</param>
/// <returns>返回的是DirectoryEntry实例</returns>
public static DirectoryEntry GetDirectoryEntry(string entPath)
{
DirectoryEntry ent;
if(UserName == null)
{
ent = new DirectoryEntry(entPath);
}
else
{
// ent = new DirectoryEntry(entPath, HostName+"\\"+UserName, Password, AuthenticationTypes.Secure);
ent = new DirectoryEntry(entPath, UserName, Password, AuthenticationTypes.Secure);
}
return ent;
}
#endregion
#region 添加,删除网站的方法
/// <summary>
/// 创建一个新的网站。根据传过来的信息进行配置
/// </summary>
/// <param name="siteInfo">存储的是新网站的信息</param>
public static void CreateNewWebSite(NewWebSiteInfo siteInfo)
{
if(! EnsureNewSiteEnavaible(siteInfo.BindString))
{
throw new DuplicatedWebSiteException("已经有了这样的网站了。" + Environment.NewLine + siteInfo.BindString);
}
string entPath = String.Format("IIS://{0}/w3sVC", HostName);
DirectoryEntry rootEntry = GetDirectoryEntry(entPath);
string newSiteNum = GetNewWebSiteID();
DirectoryEntry newSiteEntry = rootEntry.Children.Add(newSiteNum, "IIsWebServer");
newSiteEntry.CommitChanges();
newSiteEntry.Properties["ServerBindings"].Value = siteInfo.BindString;
newSiteEntry.Properties["ServerComment"].Value = siteInfo.CommentOfWebSite;
newSiteEntry.CommitChanges();
DirectoryEntry vdEntry = newSiteEntry.Children.Add("root", "IIsWebVirtualDir");
vdEntry.CommitChanges();
vdEntry.Properties["Path"].Value = siteInfo.WebPath;
vdEntry.CommitChanges();
}
/// <summary>
/// 删除一个网站。根据网站名称删除。
/// </summary>
/// <param name="siteName">网站名称</param>
public static void DeleteWebSiteByName(string siteName)
{
string siteNum = GetWebSiteNum(siteName);
string siteEntPath = String.Format("IIS://{0}/w3svc/{1}", HostName, siteNum);
DirectoryEntry siteEntry = GetDirectoryEntry(siteEntPath);
string rootPath = String.Format("IIS://{0}/w3svc", HostName);
DirectoryEntry rootEntry = GetDirectoryEntry(rootPath);
rootEntry.Children.Remove(siteEntry);
rootEntry.CommitChanges();
}
#endregion
#region Start和Stop网站的方法
public static void StartWebSite(string siteName)
{
string siteNum = GetWebSiteNum(siteName);
string siteEntPath = String.Format("IIS://{0}/w3svc/{1}", HostName, siteNum);
DirectoryEntry siteEntry = GetDirectoryEntry(siteEntPath);
siteEntry.Invoke("Start", new object[] {});
}
public static void StopWebSite(string siteName)
{
string siteNum = GetWebSiteNum(siteName);
string siteEntPath = String.Format("IIS://{0}/w3svc/{1}", HostName, siteNum);
DirectoryEntry siteEntry = GetDirectoryEntry(siteEntPath);
siteEntry.Invoke("Stop", new object[] {});
}
#endregion
#region 确认网站是否相同
/// <summary>
/// 确定一个新的网站与现有的网站没有相同的。
/// 这样防止将非法的数据存放到IIS里面去
/// </summary>
/// <param name="bindStr">网站邦定信息</param>
/// <returns>真为可以创建,假为不可以创建</returns>
public static bool EnsureNewSiteEnavaible(string bindStr)
{
string entPath = String.Format("IIS://{0}/w3svc", HostName);
DirectoryEntry ent = GetDirectoryEntry(entPath);
foreach(DirectoryEntry child in ent.Children)
{
if(child.SchemaClassName == "IIsWebServer")
{
if(child.Properties["ServerBindings"].Value != null)
{
if(child.Properties["ServerBindings"].Value.ToString() == bindStr)
{
return false;
}
}
}
}
return true;
}
#endregion
#region 获取一个网站编号的方法
/// <summary>
/// 获取一个网站的编号。根据网站的ServerBindings或者ServerComment来确定网站编号
/// </summary>
/// <param name="siteName"></param>
/// <returns>返回网站的编号</returns>
/// <exception cref="NotFoundWebSiteException">表示没有找到网站</exception>
public static string GetWebSiteNum(string siteName)
{
Regex regex = new Regex(siteName);
string tmpStr;
string entPath = String.Format("IIS://{0}/w3svc", HostName);
DirectoryEntry ent = GetDirectoryEntry(entPath);
foreach(DirectoryEntry child in ent.Children)
{
if(child.SchemaClassName == "IIsWebServer")
{
if(child.Properties["ServerBindings"].Value != null)
{
tmpStr = child.Properties["ServerBindings"].Value.ToString();
if(regex.Match(tmpStr).Su
clearcase/" target="_blank" >ccess)
{
return child.Name;
}
}
if(child.Properties["ServerComment"].Value != null)
{
tmpStr = child.Properties["ServerComment"].Value.ToString();
if(regex.Match(tmpStr).Success)
{
return child.Name;
}
}
}
}
throw new NotFoundWebSiteException("没有找到我们想要的站点" + siteName);
}
#endregion
#region 获取新网站id的方法
/// <summary>
/// 获取网站系统里面可以使用的最小的ID。
/// 这是因为每个网站都需要有一个唯一的编号,而且这个编号越小越好。
/// 这里面的算法经过了
测试是没有问题的。
/// </summary>
/// <returns>最小的id</returns>
public static string GetNewWebSiteID()
{
ArrayList list = new ArrayList();
string tmpStr;
string entPath = String.Format("IIS://{0}/w3svc", HostName);
DirectoryEntry ent = GetDirectoryEntry(entPath);
foreach(DirectoryEntry child in ent.Children)
{
if(child.SchemaClassName == "IIsWebServer")
{
tmpStr = child.Name.ToString();
list.Add(Convert.ToInt32(tmpStr));
}
}
list.Sort();
int i = 1;
foreach(int j in list)
{
if(i == j)
{
i++;
}
}
return i.ToString();
}
#endregion
}
#region 新网站信息结构体
public struct NewWebSiteInfo
{
private string hostIP; // The Hosts IP Address
private string portNum; // The New Web Sites Port.generally is "80"
private string descOfWebSite; // 网站表示。一般为网站的网站名。例如"www.dns.com.cn"
private string commentOfWebSite;// 网站注释。一般也为网站的网站名。
private string webPath; // 网站的主目录。例如"e:\tmp"
public NewWebSiteInfo(string hostIP, string portNum, string descOfWebSite, string commentOfWebSite, string webPath)
{
this.hostIP = hostIP;
this.portNum = portNum;
this.descOfWebSite = descOfWebSite;
this.commentOfWebSite = commentOfWebSite;
this.webPath = webPath;
}
public string BindString
{
get
{
return String.Format("{0}:{1}:{2}", hostIP, portNum, descOfWebSite);
}
}
public string CommentOfWebSite
{
get
{
return commentOfWebSite;
}
}
public string WebPath
{
get
{
return webPath;
}
}
}
#endregion
}
至此,一个相对
安全的
.net主机就建立起来了,随着.net2.0的发布越来越逼近,希望ms能针对此问题作一个妥善的防范。
我们已经简单的介绍了一下ASP.NET中关于文件IO系统的漏洞的防治方法,这一方法有些繁琐,但是却可以从根本上杜绝一些漏洞,我们讨论的只是很少的一部分,更多的解决放法需要大家共同来探索、学习。
原文转自:http://www.ltesting.net