分享
 
 
 

Forms authentication without a (visible) form

王朝other·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

A user can browse your web-pages anonymous or as an authenticated user. This is set in the web.config of your site.

<authorization>

<allow users="*" /> <!-- Allow all users -->

</authorization>

By default every user can browse any page. If you want to know who is requesting, deny the access to unknown users

<authorization>

<deny users="?"/>

</authorization>

Now every user has to be authenticated to view a page. You set authentication on a page basis by adding sections to the web.config

<location path="AuthRequired.aspx">

<system.web>

<authorization>

<deny users="?"/>

</authorization>

</system.web>

</location>

Take a look at the asp.net forums app to get an idea how to use that. In a forum everybody can browse and read the posts but you have to be authenticated to (react on a) post.

ASP.NET has several ways of authentication built in: Windows integrated, Passport and forms. Using forms authentication the user is forced to a login page before visiting a page. This login page is also set from the web.config file

<authentication mode="Forms">

<forms name=".MyAuthCookieName"

loginUrl="AuthenticateHere.aspx"

protection="All"

timeout="30" />

</authentication>

On the login page the user enters a username and password which is supposed to be validated against the one or the other. When approved the code will set an authorization cookie. With this cookie the user can visit all pages shielded off without having to log in again and again. When the code issues a persistent cookie the login will persist over sessions. (Remember me).

But nothing forces you to pop up a form. Asp.Net doesn't care as long as the cookie is set. You could do this for instance

private void AuthenticateHere_Init(object sender, System.EventArgs e)

{

if (isValidAddress(Context.Request.UserHostAddress))

{

System.Web.Security.FormsAuthentication.SetAuthCookie(Context.Request.UserHostAddress, false);

string redirectUrl = Page.Request.QueryString["ReturnUrl"];

if (redirectUrl != null)

{

Page.Response.Redirect(redirectUrl);

Page.Response.End();

}

}

}

Right in the start of the pages lifecycle, in the init event of the page the cookie is set. Why the user deserves an authentication cookie is up to you, here I use a custom method IsValidAdress. After setting the cookie the response is ended and the app is redirected to the page requesting the authentication. FormsAuthentication passes the url in the querystring. In the browser toolbar you will see the Authenticate page being hit, on a succefull authentication the visual page itself jumps directly to the page requested in the querystring.

The nice thing about forms authentication that it is completely set from the web.config. This way you can hook your own authentication into an existing app. Like asp.net forums.

Peter

 
 
 
免责声明:本文为网络用户发布,其观点仅代表作者个人观点,与本站无关,本站仅提供信息存储服务。文中陈述内容未经本站证实,其真实性、完整性、及时性本站不作任何保证或承诺,请读者仅作参考,并请自行核实相关内容。
2023年上半年GDP全球前十五强
 百态   2023-10-24
美众议院议长启动对拜登的弹劾调查
 百态   2023-09-13
上海、济南、武汉等多地出现不明坠落物
 探索   2023-09-06
印度或要将国名改为“巴拉特”
 百态   2023-09-06
男子为女友送行,买票不登机被捕
 百态   2023-08-20
手机地震预警功能怎么开?
 干货   2023-08-06
女子4年卖2套房花700多万做美容:不但没变美脸,面部还出现变形
 百态   2023-08-04
住户一楼被水淹 还冲来8头猪
 百态   2023-07-31
女子体内爬出大量瓜子状活虫
 百态   2023-07-25
地球连续35年收到神秘规律性信号,网友:不要回答!
 探索   2023-07-21
全球镓价格本周大涨27%
 探索   2023-07-09
钱都流向了那些不缺钱的人,苦都留给了能吃苦的人
 探索   2023-07-02
倩女手游刀客魅者强控制(强混乱强眩晕强睡眠)和对应控制抗性的关系
 百态   2020-08-20
美国5月9日最新疫情:美国确诊人数突破131万
 百态   2020-05-09
荷兰政府宣布将集体辞职
 干货   2020-04-30
倩女幽魂手游师徒任务情义春秋猜成语答案逍遥观:鹏程万里
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案神机营:射石饮羽
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案昆仑山:拔刀相助
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案天工阁:鬼斧神工
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案丝路古道:单枪匹马
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案镇郊荒野:与虎谋皮
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案镇郊荒野:李代桃僵
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案镇郊荒野:指鹿为马
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案金陵:小鸟依人
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案金陵:千金买邻
 干货   2019-11-12
 
推荐阅读
 
 
 
>>返回首頁<<
 
靜靜地坐在廢墟上,四周的荒凉一望無際,忽然覺得,淒涼也很美
© 2005- 王朝網路 版權所有