Create a New Project
Create a new project, you can use Visual Web Developer or Visual studio to do that and
create folder structure like below.
Note that I have Admin folder create, secure and easy to differentiate access based on user roles.
Admin folder in my case will request access to those whose role is "Admin" and "User". Folder
user will request access only to those whose role is "user" insurance binder and have access to all
authenticated users At least, no matter what role they have. Each folder has a file. Aspx page that
displays welcome message, as shown in the first image above.
Creating settings for Web.Config file
Add authentication option following in the web.config file in <system.web>.
<authentication Mode = "Forms">
<form DefaultUrl = "default.aspx" loginUrl = "~ / login.aspx" "true"
slidingExpiration ="" timeout = "20">
</ forms>
</authentication>
For each user to protect a specific folder, you can place fit for them, either in the parent web.config file
(root folder) or the web.config file in the folder.Specifying paper settings for the folder in the root
web.config file (in this case to the Administration)
<location path ="Admin">
<system.web>
<authorization>
<allow roles = "admin" />
<deny users="*" />
</authorization>
</system.web>
</location>
Enter this code outside <configuration> <system.web> but under the label of the root web.config file.
Here I am specifying that if the path contains the name of the administrator folder and only users with
"admin" roles are allowed and all other users are denied.
Specifying paper settings for the folder in the web.config file specific folder (in this case the user)
<System.web>
<authorization>
<allow Roles = "usuario" />
<deny Users= "*" />
</ Authorization>
</ System.web>
Enter this code in web.config file folder user. You can specify settings for the user in the root web.config
file also how I've done for the previous administration. This is just another way of specifying the
configuration. This configuration should be placed on the label <configuration>.
Specify settings for the authenticated user
<System.web>
<authorization>
<Deny Users = "?" />
</ Authorization>
</ System.web>
Type the following code in the web.config secure folder. This is the specification that all users are denied
anonymous this folder and only authenticated users can, regardless of their functions.
User Authentication
Assuming you have gone through my previous article mentioned, you have a login page. Now when the user
clicks the Login button fires Authenticate method allows the code from that method.
private void get()
{ string userName = loginControl.UserName;
string password = loginControl.Password;
bool rememberUserName = loginControl.RememberMeSet;
// for this demo purpose, I am storing user details into xml file
string dataPath = Server.MapPath("~/App_Data/UserInformation.xml"); DataSet dSet = new DataSet();
dSet.ReadXml(dataPath);
DataRow[] rows = dSet.Tables[0].Select(String.Format(" UserName = '{0}' AND Password =
'{1}'", userName, password)); // record validated
if (rows.Length > 0)
{ // get the role now
string roles = rows[0]["Roles"].ToString();
// Create forms authentication ticket
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(
1, // Ticket version
userName, // Username to be associated with this ticket
DateTime.Now, // Date/time ticket was issued
DateTime.Now.AddMinutes(50), // Date and time the cookie will expire
rememberUserName, // if user has chcked rememebr me then create persistent cookie
roles, // store the user data, in this case roles of the user
FormsAuthentication.FormsCookiePath); // Cookie path specified in the web.config
//file in <Forms> tag if any.
// To give more security it is suggested to hash it
string hashCookies = FormsAuthentication.Encrypt(ticket);
HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, hashCookies);
// Hashed ticket
// Add the cookie to the response, user browser
Response.Cookies.Add(cookie);
// Get the requested page from the url
string returnUrl = Request.QueryString["ReturnUrl"];
// check if it exists, if not then redirect to default page
if (returnUrl == null) returnUrl = "~/Default.aspx";
Response.Redirect(returnUrl);
}
else // wrong username and password
{ // do nothing, Login control will automatically show the failure message
// if you are not using Login control, show the failure message explicitely
}
}
In the above method, I used the UserInformation.xml file that contains the credentials and role information to the user.
I Reding xml file and get all the users credentials in the data set and using the method of DataTable.Select, I'm
filtering based on user registration and password. If you find a record, then I'm adding the entry into FormsAuthentication cookie encrypt and then redirected to the requested URL in your otherwise the default page.
Note that I have not used standard method FormsAuthentication.RedirectFromLoginPage FormsAuthenticate
method to redirect the login page after authentication of users, not to establish the role of users in the cookie and I will not be able to validate users based on the paper. To add functions to users in the authentication ticket, I used the FormsAuthenticationTicket class and pass the required data as parameter (Note that the roles are passed as constructor parameter FormsAuthenticationTicket UserData).
So far we have set the forms authentication ticket with the required data, including user roles in the cookie, now how to retrive the information about each request and that a request comes from the paper type? So we must use the event Global.asx Application_AuthenticateRequest file. See the code below.
protected void Application_AuthenticateRequest(object sender, EventArgs e)
{
// Check if the safety information that exists for this request
if (HttpContext. Current.User != null)
{
// Check if the user is authenticated, any authenticated cookie (ticket) which exists to this user
if (HttpContext. Current.User.Identity.IsAuthenticated)
{
// Check if authentication is done by FormsAuthentication
if (HttpContext. Current.User.Identity is FormsIdentity)
{
// Get roles for this application stored entry
// Get the user's identity
FormsIdentity identity =(FormsIdentity) HttpContext.Current.User.Identity;
// Get the ticket authetication ways for the user
FormsAuthenticationTicket ticket = identity.Ticket;
// Get the roles stored in the entry as UserData
String [] roles = ticket.UserData.Split (',');
// Create generic principal and assign it to the current request
HttpContext.Current.User = new System.Security.Principal. GenericPrincipal (identity, roles);
}
}
}
}
This even after checking the user exists, he / she is authenticated and the user type is FormsIdentity identy
number, I am getting the actual identity of the user and get the ticket I have put in the time Authentiacting.
Once you have authenticated the note, I just got the UserData of the bill, which was divided for the papers
(remember he had kept the papers as comma separated values). Now we have the current users roles so we
can move to the current user in the GenericPrincipal the current identity and assign this to the user object
curent. This allows us to use the IsInRole method to check whether a user belongs to a particular function
or not.
How to check if the user has a particular role?
To check whether a user belongs to a particulr paper, use the code below. This code returns true if the current
record is from the user is authenticated and has a role as an administrator.
HttpContext. Current.User.IsInRole ("admin")
How to check if the user is authenticated?
To check whether the user is authenticated or not, use the code below.
HttpContext. Current.User.Identity.IsAuthenticated
For authenticated user name
HttpContext. Current.User.Identity.Name
If you've followed the steps, you should try runnig application. Try logging in as administrator you can access all pages (Admin, User, insurance, home). Try to login as a user and the user can access, home insurance, but not management. Try logging in as safe and you will be able to access a secure home, but the non-administrator. Try to visit all the links and you can access links Home only.
