代码
using System;
using System.Collections;
using System.Security.Cryptography;
using System.Text;
using System.Web;
using System.IO;
using System.Collections.Specialized;
using System.Web.Caching;
using System.Xml;
using System.Configuration;
using System.Xml.Serialization;
namespace Utility
{
/// <summary>
/// Common 的摘要说明。
/// </summary>
public class Common
{
#region 成员字段
public static readonly string CacheKey = "ForumsConfiguration";
private Hashtable providers = new Hashtable();
private Hashtable extensions = new Hashtable();
private static readonly Cache cache = HttpRuntime.Cache;
private string defaultProvider;
private string defaultLanguage;
private string forumFilesPath;
private bool disableBackgroundThreads = false;
private bool disableIndexing = false;
private bool disableEmail = false;
private string passwordEncodingFormat = "unicode";
private int threadIntervalEmail = 15;
private int threadIntervalStats = 15;
//private SystemType systemType = SystemType.Self;
private short smtpServerConnectionLimit = -1;
private bool enableLatestVersionCheck = true;
private string uploadFilesPath = "/Upload/";
private XmlDocument XmlDoc = null;
#endregion
public Common()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public enum UserPasswordFormat
{
ClearText = 0,
MD5Hash = 1,
Sha1Hash = 2,
Encyrpted = 3
}
public string PasswordEncodingFormat
{
get { return passwordEncodingFormat; }
}
public static string Encrypt(UserPasswordFormat format, string cleanString, string salt)
{
Byte[] clearBytes;
Byte[] hashedBytes;
Encoding encoding = Encoding.GetEncoding("unicode");
clearBytes = encoding.GetBytes(salt.ToLower().Trim() + cleanString.Trim());
hashedBytes = ((HashAlgorithm) CryptoConfig.CreateFromName("MD5")).ComputeHash(clearBytes);
return BitConverter.ToString(hashedBytes);
;
}
public static Common GetConfig()
{
Common config = cache.Get(CacheKey) as Common;
if(config == null)
{
string path;
if(HttpContext.Current != null)
path = HttpContext.Current.Server.MapPath("~/Forums.config");
else
path = Directory.GetCurrentDirectory() + Path.DirectorySeparatorChar + "Forums.config";
XmlDocument doc = new XmlDocument();
doc.Load(path);
config = new Common(doc);
cache.Insert(CacheKey,config,new CacheDependency(path),DateTime.MaxValue,TimeSpan.Zero,CacheItemPriority.AboveNormal,null);
//cache.ReSetFactor(config.CacheFactor);
}
return config;
}
}
}