narsil/Tanshu.Accounts.BI/SecurityBI.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
using System.Security.Principal;
using System.Globalization;
using System.Threading;
using Tanshu.Accounts.Contracts;

namespace Tanshu.Accounts.BI
{
    public class AccountsIdentity : IIdentity
    {
        // the authentication type for us is always database
        private static string AuthenticationTypeString = "Database";

        // hash table with all the user info we have
        private UserBO userInfo;

        // create the user identity; all user information is in the
        // hashtable passed along
        private AccountsIdentity(UserBO UserInfo)
        {
            this.userInfo = UserInfo;
        }

        //create a user identity and return it to the caller
        public static AccountsIdentity CreateUserIdentity(UserBO UserInfo)
        {
            return new AccountsIdentity(UserInfo);
        }
        // returns the name of the identity
        public string Name { get { return UserInfo.Name; } }

        // returns the userID of the identity
        public UserBO UserInfo { get { return userInfo; } }

        // returns whether or not identity is authenticated
        public bool IsAuthenticated { get { return true; } }

        // the type of authentication
        public string AuthenticationType { get { return AuthenticationTypeString; } }
    }
    public class AccountsPrincipal : IPrincipal
    {
        // stores the list of roles user has
        private string[] userRoles;

        // the user identity we create and associate with this principal
        private AccountsIdentity userIdentity;

        // constructor: stores role and permission info and creates
        // custom identity
        private AccountsPrincipal(string[] userRoles, UserBO userInfo)
        {
            this.userRoles = userRoles;

            // creates the IIdentity for the user and associates it with
            // this IPrincipal
            userIdentity = AccountsIdentity.CreateUserIdentity(userInfo);
        }

        // create the security principal and return it to the caller
        public static AccountsPrincipal CreateAccountsPrincipal(string[] userRoles, UserBO userInfo)
        {
            return new AccountsPrincipal(userRoles, userInfo);
        }
        // returns the Identity object associated with the principal
        public IIdentity Identity
        {
            get
            {
                return userIdentity;
            }
        }

        // checks whether user belongs to role
        public bool IsInRole(string Role)
        {
            //return userRoles.Where(ur => ur.ToLower() == Role.ToLower()).Count() > 1;
            return (userRoles.Where(ur => ur.Trim().ToLower() == Role.Trim().ToLower()).Count() > 0 ? true : false);
        }
    }
    public static class CurrentUser
    {
        public static UserBO user
        {
            get
            {
                AccountsIdentity identity = (AccountsIdentity)Thread.CurrentPrincipal.Identity;
                return identity.UserInfo;
            }
        }
    }

}