Asp.Net基于forms的验证机制
项目需要研究了下Asp.Net的基于forms的验证机制
构建基于forms的验证机制过程如下：
1,设置IIS为可匿名访问和asp.net web.config中设置为form验证
2,检索数据存储验证用户，并检索角色(如果不是基于角色可不用)
简单无role方式：
使用FormsAuthenticationTicket创建一个Cookie并回发到客户端，并存储 角色到票中，如：
FormsAuthentication.SetAuthCookie(Username,true | false)
cookies保存时间：
HttpContext.Current.Response.Cookies[FormsAuthentication.FormsCookieName].Expires=DateTime.Now.AddDays(1)
如果需要存储角色方式：view plaincopy to clipboardprint?
FormsAuthenticationTicket authTicket = new
FormsAuthenticationTicket(
1, // version
txtUserName.Text, // user name
DateTime.Now, // creation
DateTime.Now.AddMinutes(20),// Expiration
false, // Persistent
roles ); // User data
//roles是一个角色字符串数组
string encryptedTicket = FormsAuthentication.Encrypt(authTicket); //加密
FormsAuthenticationTicket authTicket = new
FormsAuthenticationTicket(
1, // version
txtUserName.Text, // user name
DateTime.Now, // creation
DateTime.Now.AddMinutes(20),// Expiration
false, // Persistent
roles ); // User data
//roles是一个角色字符串数组
string encryptedTicket = FormsAuthentication.Encrypt(authTicket); //加密 存入Cookie view plaincopy to clipboardprint?
HttpCookie authCookie =
new HttpCookie(FormsAuthentication.FormsCookieName,
encryptedTicket);
Response.Cookies.Add(authCookie);
HttpCookie authCookie =
new HttpCookie(FormsAuthentication.FormsCookieName,
encryptedTicket);
Response.Cookies.Add(authCookie); 在Application_AuthenticateRequest事件中处理程序中(Global.asax)中，使用票创建IPrincipal对象并存在HttpContext.User中代码： view plaincopy to clipboardprint?
protected void Application_AuthorizeRequest(object sender, System.EventArgs e)
{
HttpApplication App = (HttpApplication) sender;
HttpContext Ctx = App.Context ; //获取本次Http请求相关的HttpContext对象
if (Ctx.Request.IsAuthenticated == true) //验证过的用户才进行role的处理
{
FormsIdentity Id = (FormsIdentity)Ctx.User.Identity ;
FormsAuthenticationTicket Ticket = Id.Ticket ; //取得身份验证票
string[] Roles = Ticket.UserData.Split (',') ; //将身份验证票中的role数据转成字符串数组
Ctx.User = new GenericPrincipal (Id, Roles) ; //将原有的Identity加上角色信息新建一个GenericPrincipal表示当前用户,这样当前用户就拥有了role信息
}
}
protected void Application_AuthorizeRequest(object sender, System.EventArgs e)
{
HttpApplication App = (HttpApplication) sender;
HttpContext Ctx = App.Context ; //获取本次Http请求相关的HttpContext对象
if (Ctx.Request.IsAuthenticated == true) //验证过的用户才进行role的处理
{
FormsIdentity Id = (FormsIdentity)Ctx.User.Identity ;
FormsAuthenticationTicket Ticket = Id.Ticket ; //取得身份验证票
string[] Roles = Ticket.UserData.Split (',') ; //将身份验证票中的role数据转成字符串数组
Ctx.User = new GenericPrincipal (Id, Roles) ; //将原有的Identity加上角色信息新建一个GenericPrincipal表示当前用户,这样当前用户就拥有了role信息
}
}需要对某些页面进行角色控制，有两种方法：
1、web.config中加 view plaincopy to clipboardprint?
<location path="EditPost.aspx">
<system.web>
<authorization>
<allow roles="RoleName" />
<deny users="?" />
</authorization>
</system.web>
</location>
<location path="EditPost.aspx">
<system.web>
<authorization>
<allow roles="RoleName" />
<deny users="?" />
</authorization>
</system.web>
</location> 2、把只能是某种角色访问的文件放在同一目录下,在此目录下添加一个web.config view plaincopy to clipboardprint?
<configuration>
<system.web>
<authorization>
<allow roles="RoleName" />
<deny users="*" />
</authorization>
</system.web>
</configuration>
<configuration>
<system.web>
<authorization>
<allow roles="RoleName" />
<deny users="*" />
</authorization>
</system.web>
</configuration> 说明：子目录的web.config设置优先于父目录的web.config设置
以上参考：http://www.cnblogs.com/kwklover/archive/2004/06/29/19455.aspx
http://www.donews.net/robinblood/archive/2005/04/30/358041.aspx