RoleManagerModule.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Security / RoleManagerModule.cs / 1305376 / RoleManagerModule.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 * RoleManagerModule class 
 *
 * Copyright (c) 1999 Microsoft Corporation 
 */

namespace System.Web.Security {
    using System.Collections; 
    using System.Security.Principal;
    using System.Security.Permissions; 
    using System.Text; 
    using System.Threading;
    using System.Web; 
    using System.Web.Configuration;
    using System.Web.Caching;
    using System.Web.Util;
 
    /// 
    ///    [To be supplied.] 
    ///  
    public sealed class RoleManagerModule : IHttpModule {
        private const int MAX_COOKIE_LENGTH = 4096; 

        private RoleManagerEventHandler _eventHandler;

        ///  
        ///    
        ///       Initializes a new instance of the  
        ///       class. 
        ///     
        ///  
        [SecurityPermission(SecurityAction.Demand, Unrestricted=true)]
        public RoleManagerModule() {
        }
 

        public event RoleManagerEventHandler GetRoles { 
            add { 
                HttpRuntime.CheckAspNetHostingPermission(AspNetHostingPermissionLevel.Low, SR.Feature_not_supported_at_this_level);
                _eventHandler += value; 
            }
            remove {
                _eventHandler -= value;
            } 
        }
 
 
        /// 
        ///    [To be supplied.] 
        /// 
        public void Dispose() {
        }
 

        ///  
        ///    [To be supplied.] 
        /// 
        public void Init(HttpApplication app) { 
            // for IIS 7, skip wireup of these delegates altogether unless the
            // feature is enabled for this application
            // this avoids the initial OnEnter transition unless it's needed
            if (Roles.Enabled) { 
                app.PostAuthenticateRequest += new EventHandler(this.OnEnter);
                app.EndRequest += new EventHandler(this.OnLeave); 
            } 
        }
 
        ////////////////////////////////////////////////////////////
        ////////////////////////////////////////////////////////////
        ////////////////////////////////////////////////////////////
 
        /// 
        ///    [To be supplied.] 
        ///  
        private void OnEnter(Object source, EventArgs eventArgs) {
            if (!Roles.Enabled) { 
                if (HttpRuntime.UseIntegratedPipeline) {
                    ((HttpApplication)source).Context.DisableNotifications(RequestNotification.EndRequest, 0);
                }
                return; 
            }
 
            HttpApplication app = (HttpApplication)source; 
            HttpContext context = app.Context;
            if (_eventHandler != null) { 
                RoleManagerEventArgs e = new RoleManagerEventArgs(context);
                _eventHandler(this, e);
                if (e.RolesPopulated)
                    return; 
            }
 
            Debug.Assert(null != context.User, "null != context.User"); 

            if (Roles.CacheRolesInCookie) 
            {
                if (context.User.Identity.IsAuthenticated && (!Roles.CookieRequireSSL || context.Request.IsSecureConnection))
                {
                    // Try to create from cookie 
                    try
                    { 
                        HttpCookie cookie = context.Request.Cookies[Roles.CookieName]; 
                        if (cookie != null)
                        { 
                            string cookieValue = cookie.Value;
                            // Ignore cookies that are too long
                            if (cookieValue != null && cookieValue.Length > MAX_COOKIE_LENGTH) {
                                Roles.DeleteCookie(); 
                            }
                            else { 
                                if (!String.IsNullOrEmpty(Roles.CookiePath) && Roles.CookiePath != "/") { 
                                    cookie.Path = Roles.CookiePath;
                                } 

                                cookie.Domain = Roles.Domain;
                                context.SetPrincipalNoDemand(CreateRolePrincipalWithAssert(context.User.Identity, cookieValue));
                            } 
                        }
                    } 
                    catch {  } // ---- exceptions 
                }
                else 
                {
                    if (context.Request.Cookies[Roles.CookieName] != null)
                        Roles.DeleteCookie();
                    // if we're not using cookie caching, we don't need the EndRequest 
                    // event and can suppress it
                    if (HttpRuntime.UseIntegratedPipeline) { 
                        context.DisableNotifications(RequestNotification.EndRequest, 0); 
                    }
                } 
            }

            if (!(context.User is RolePrincipal))
                context.SetPrincipalNoDemand(CreateRolePrincipalWithAssert(context.User.Identity)); 

            HttpApplication.SetCurrentPrincipalWithAssert(context.User); 
        } 

        [SecurityPermission(SecurityAction.Assert, ControlPrincipal = true)] 
        private RolePrincipal CreateRolePrincipalWithAssert(IIdentity identity, string encryptedTicket = null) {
            if (encryptedTicket == null) {
                return new RolePrincipal(identity);
            } 
            else {
                return new RolePrincipal(identity, encryptedTicket); 
            } 
        }
 
        private void OnLeave(Object source, EventArgs eventArgs) {
            HttpApplication app;
            HttpContext context;
 
            app = (HttpApplication)source;
            context = app.Context; 
 
            if (!Roles.Enabled || !Roles.CacheRolesInCookie || context.Response.HeadersWritten)
                return; 

            if (context.User == null || !(context.User is RolePrincipal) || !context.User.Identity.IsAuthenticated)
                return;
            if (Roles.CookieRequireSSL && !context.Request.IsSecureConnection) 
            { // if cookie is sent, then clear it
                if (context.Request.Cookies[Roles.CookieName] != null) 
                    Roles.DeleteCookie(); 
                return;
            } 
            RolePrincipal rp = (RolePrincipal) context.User;
            if (rp.CachedListChanged && context.Request.Browser.Cookies)
            {
                string s = rp.ToEncryptedTicket(); 
                if (string.IsNullOrEmpty(s) || s.Length > MAX_COOKIE_LENGTH) {
                    Roles.DeleteCookie(); 
                } else { 
                    HttpCookie cookie = new HttpCookie(Roles.CookieName, s);
                    cookie.HttpOnly = true; 
                    cookie.Path = Roles.CookiePath;
                    cookie.Domain = Roles.Domain;
                    if (Roles.CreatePersistentCookie)
                        cookie.Expires = rp.ExpireDate; 
                    cookie.Secure = Roles.CookieRequireSSL;
                    context.Response.Cookies.Add(cookie); 
                } 
            }
        } 
        ////////////////////////////////////////////////////////////
        ////////////////////////////////////////////////////////////
        ////////////////////////////////////////////////////////////
    } 
}
 
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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RoleManagerModule.cs source code in C# .NET

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