Re: Custom Roles Cookie solution always stores itself persistently?
From: Patrick Long (patrick.long@nospamplease_btinternet.com)
Date: 07/19/02
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From: "Patrick Long" <patrick.long@nospamplease_btinternet.com> Date: Fri, 19 Jul 2002 09:21:17 +0100
To get a non persistent session based cookie you must leave the cookie's
expiry date untouched. setting this is the signal that it is to
be persisted.
Normally if you were using standard Forms Auth you would set the timeout
value in web.config as 2 and this authentication timeout would be encrypted
into the ticket not applied to the cookie's expiry date.
Pat
"Devin Carlen" <dcarlenATescapia.com> wrote in message
news:ujejv8b3n0nn33@corp.supernews.com...
> Hi all,
>
> I have implemented custom roles via an sql server database with forms
> authentication almost the exact same way that the Ibuyspy portal does it.
In
> general it works fine, however I do have one concern. When I create my
> FormsAuthenticationTicket and place the roles string in it, I specifically
> tell it not to persist the cookie, but I can watch my cookie folder and
see
> that it is persisted. Then the next time the same user logs in, it uses
the
> persisted cookie instead of hitting the database again. Below is my code.
If
> anyone can shed some light on this I'd be grateful.
>
> In the UpdateUserRoles function, I Trace.Warn the persist value on the
> ticket. It always comes up as false, as expected, but this cookie is still
> persisted to the file system. Please also note that I have verified that
it
> is the "authroles" cookie being persisted.
>
> Global.asax.cs:
>
> public class Global : System.Web.HttpApplication {
> public void Application_AuthenticateRequest( object sender, EventArgs
> e ) {
> if (Request.IsAuthenticated == true)
> Security.UpdateUserRoles();
> }
> }
>
> Security.cs:
>
> public sealed class Security
> {
> /* UpdateUserRoles
> * This function updates the authroles cookie which contains
> * the current roles/access levels of the user. It is updated
> * every 2 minutes to keep any changes to user security level
> * updated.
> */
> public static void UpdateUserRoles() {
> HttpContext Context = HttpContext.Current;
> string[] roles;
>
> // Create the roles cookie if it doesn't exist yet for this
session.
> if ((Context.Request.Cookies["authroles"] == null) ||
> (Context.Request.Cookies["authroles"].Value == "")) {
> Context.Trace.Warn("No Authroles");
>
> // Get roles from UserRoles table, and add to cookie
> string roleStr = Users.GetRoles(
> Int32.Parse(Context.User.Identity.Name) );
>
> // Create a cookie authentication ticket.
> FormsAuthenticationTicket ticket = new
> FormsAuthenticationTicket(
> 1, // version
> Context.User.Identity.Name, // user name
> DateTime.Now, // issue time
> DateTime.Now.AddHours(1), // expires every hour
> false, // don't persist cookie
> roleStr // roles
> );
>
> // Encrypt the ticket
> string cookieStr = FormsAuthentication.Encrypt(ticket);
>
> // Send the cookie to the client
> Context.Response.Cookies["authroles"].Value = cookieStr;
> Context.Response.Cookies["authroles"].Path = "/";
> Context.Response.Cookies["authroles"].Expires =
> DateTime.Now.AddMinutes(2);
>
> // Convert roles to string array to pass to Principal
> ArrayList userRoles = new ArrayList();
> foreach (string role in roleStr.Split( new char[] {';'} )) {
> userRoles.Add(role);
> }
>
> roles = (string[]) userRoles.ToArray(typeof(String));
> }
> else {
> Context.Trace.Warn("Decrypt Authroles");
>
> // Get roles from roles cookie
> FormsAuthenticationTicket ticket =
> FormsAuthentication.Decrypt( Context.Request.Cookies["authroles"].Value );
>
> Context.Trace.Warn( "persist:" +
> ticket.IsPersistent.ToString() );
>
> // Convert the string representation of the role data into a
> string array
> ArrayList userRoles = new ArrayList();
>
> foreach (string role in ticket.UserData.Split( new char[]
> {';'} )) {
> userRoles.Add(role);
> }
>
> roles = (string[]) userRoles.ToArray(typeof(String));
> }
>
> // Add our own custom principal to the request containing the
roles
> in the auth ticket
> Context.User = new GenericPrincipal(Context.User.Identity, roles);
> }
> }
>
> Many thanks!
>
>
>
>
- Next message: Fr. Sanderson: "loginUrl"
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- In reply to: Devin Carlen: "Custom Roles Cookie solution always stores itself persistently?"
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