RoleService.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Extensions / ApplicationServices / RoleService.cs / 1305376 / RoleService.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.ApplicationServices { 
    using System; 
    using System.Diagnostics.CodeAnalysis;
    using System.ServiceModel; 
    using System.ServiceModel.Activation;
    using System.ServiceModel.Configuration;
    using System.Runtime.Serialization;
    using System.Web; 
    using System.Web.Security;
    using System.Web.Configuration; 
    using System.Web.Management; 
    using System.Web.Resources;
    using System.Security.Principal; 
    using System.Web.Hosting;
    using System.Threading;
    using System.Configuration.Provider;
 
    [
    AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required), 
    ServiceContract(Namespace = "http://asp.net/ApplicationServices/v200"), 
    ServiceBehavior(Namespace="http://asp.net/ApplicationServices/v200", InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Multiple)
    ] 
    public class RoleService {
        private static object _selectingProviderEventHandlerLock = new object();
        private static EventHandler _selectingProvider;
 
        public static event EventHandler SelectingProvider {
            add { 
                lock (_selectingProviderEventHandlerLock) { 
                    _selectingProvider += value;
                } 
            }
            remove {
                lock (_selectingProviderEventHandlerLock) {
                    _selectingProvider -= value; 
                }
            } 
        } 

        private static void EnsureProviderEnabled() { 
            if (!Roles.Enabled) {
                throw new ProviderException(AtlasWeb.RoleService_RolesFeatureNotEnabled);
            }
        } 

        private RoleProvider GetRoleProvider(IPrincipal user) { 
            string providerName = Roles.Provider.Name; 
            SelectingProviderEventArgs args = new SelectingProviderEventArgs(user, providerName);
            OnSelectingProvider(args); 
            providerName = args.ProviderName;
            RoleProvider provider = Roles.Providers[providerName];
            if (provider == null) {
                throw new ProviderException(AtlasWeb.RoleService_RoleProviderNotFound); 
            }
            return provider; 
        } 

        [OperationContract] 
        public string[] GetRolesForCurrentUser() {
            try {
                ApplicationServiceHelper.EnsureRoleServiceEnabled();
                EnsureProviderEnabled(); 

                IPrincipal user = ApplicationServiceHelper.GetCurrentUser(HttpContext.Current); 
                string username = ApplicationServiceHelper.GetUserName(user); 
                RoleProvider provider = GetRoleProvider(user);
 
                return provider.GetRolesForUser(username);
            }
            catch (Exception e) {
                LogException(e); 
                throw;
            } 
        } 

        [OperationContract] 
        public bool IsCurrentUserInRole(string role) {
            if (role == null) {
                throw new ArgumentNullException("role");
            } 

            try { 
                ApplicationServiceHelper.EnsureRoleServiceEnabled(); 
                EnsureProviderEnabled();
 
                IPrincipal user = ApplicationServiceHelper.GetCurrentUser(HttpContext.Current);
                string username = ApplicationServiceHelper.GetUserName(user);
                RoleProvider provider = GetRoleProvider(user);
 
                return provider.IsUserInRole(username, role);
            } 
            catch (Exception e) { 
                LogException(e);
                throw; 
            }
        }

        private void LogException(Exception e) { 
            WebServiceErrorEvent errorevent = new WebServiceErrorEvent(AtlasWeb.UnhandledExceptionEventLogMessage, this, e);
            errorevent.Raise(); 
        } 

        private void OnSelectingProvider(SelectingProviderEventArgs e) { 
            EventHandler handler = _selectingProvider;
            if (handler != null) {
                handler(this, e);
            } 
        }
 
        //hiding public constructor 
        internal RoleService() {
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.ApplicationServices { 
    using System; 
    using System.Diagnostics.CodeAnalysis;
    using System.ServiceModel; 
    using System.ServiceModel.Activation;
    using System.ServiceModel.Configuration;
    using System.Runtime.Serialization;
    using System.Web; 
    using System.Web.Security;
    using System.Web.Configuration; 
    using System.Web.Management; 
    using System.Web.Resources;
    using System.Security.Principal; 
    using System.Web.Hosting;
    using System.Threading;
    using System.Configuration.Provider;
 
    [
    AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required), 
    ServiceContract(Namespace = "http://asp.net/ApplicationServices/v200"), 
    ServiceBehavior(Namespace="http://asp.net/ApplicationServices/v200", InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Multiple)
    ] 
    public class RoleService {
        private static object _selectingProviderEventHandlerLock = new object();
        private static EventHandler _selectingProvider;
 
        public static event EventHandler SelectingProvider {
            add { 
                lock (_selectingProviderEventHandlerLock) { 
                    _selectingProvider += value;
                } 
            }
            remove {
                lock (_selectingProviderEventHandlerLock) {
                    _selectingProvider -= value; 
                }
            } 
        } 

        private static void EnsureProviderEnabled() { 
            if (!Roles.Enabled) {
                throw new ProviderException(AtlasWeb.RoleService_RolesFeatureNotEnabled);
            }
        } 

        private RoleProvider GetRoleProvider(IPrincipal user) { 
            string providerName = Roles.Provider.Name; 
            SelectingProviderEventArgs args = new SelectingProviderEventArgs(user, providerName);
            OnSelectingProvider(args); 
            providerName = args.ProviderName;
            RoleProvider provider = Roles.Providers[providerName];
            if (provider == null) {
                throw new ProviderException(AtlasWeb.RoleService_RoleProviderNotFound); 
            }
            return provider; 
        } 

        [OperationContract] 
        public string[] GetRolesForCurrentUser() {
            try {
                ApplicationServiceHelper.EnsureRoleServiceEnabled();
                EnsureProviderEnabled(); 

                IPrincipal user = ApplicationServiceHelper.GetCurrentUser(HttpContext.Current); 
                string username = ApplicationServiceHelper.GetUserName(user); 
                RoleProvider provider = GetRoleProvider(user);
 
                return provider.GetRolesForUser(username);
            }
            catch (Exception e) {
                LogException(e); 
                throw;
            } 
        } 

        [OperationContract] 
        public bool IsCurrentUserInRole(string role) {
            if (role == null) {
                throw new ArgumentNullException("role");
            } 

            try { 
                ApplicationServiceHelper.EnsureRoleServiceEnabled(); 
                EnsureProviderEnabled();
 
                IPrincipal user = ApplicationServiceHelper.GetCurrentUser(HttpContext.Current);
                string username = ApplicationServiceHelper.GetUserName(user);
                RoleProvider provider = GetRoleProvider(user);
 
                return provider.IsUserInRole(username, role);
            } 
            catch (Exception e) { 
                LogException(e);
                throw; 
            }
        }

        private void LogException(Exception e) { 
            WebServiceErrorEvent errorevent = new WebServiceErrorEvent(AtlasWeb.UnhandledExceptionEventLogMessage, this, e);
            errorevent.Raise(); 
        } 

        private void OnSelectingProvider(SelectingProviderEventArgs e) { 
            EventHandler handler = _selectingProvider;
            if (handler != null) {
                handler(this, e);
            } 
        }
 
        //hiding public constructor 
        internal RoleService() {
        } 
    }
}

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

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