Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Security / RolePrincipal.cs / 2 / RolePrincipal.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * RolePrincipal * * Copyright (c) 2002 Microsoft Corporation */ namespace System.Web.Security { using System.Security.Principal; using System.Security.Permissions; using System.Collections; using System.Collections.Specialized; using System.Web; using System.Web.Hosting; using System.Text; using System.Web.Configuration; using System.Web.Util; using System.Globalization; using System.Runtime.Serialization; using System.IO; using System.Configuration.Provider; using System.Runtime.Serialization.Formatters.Binary; [Serializable] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class RolePrincipal : IPrincipal, ISerializable { public RolePrincipal(IIdentity identity, string encryptedTicket) { if (identity == null) throw new ArgumentNullException( "identity" ); if (encryptedTicket == null) throw new ArgumentNullException( "encryptedTicket" ); _Identity = identity; _ProviderName = Roles.Provider.Name; if (identity.IsAuthenticated) InitFromEncryptedTicket(encryptedTicket); else Init(); } public RolePrincipal(IIdentity identity) { if (identity == null) throw new ArgumentNullException( "identity" ); _Identity = identity; Init(); } public RolePrincipal(string providerName, IIdentity identity ) { if (identity == null) throw new ArgumentNullException( "identity" ); if( providerName == null) throw new ArgumentException( SR.GetString( SR.Role_provider_name_invalid ), "providerName" ); _ProviderName = providerName; if (Roles.Providers[providerName] == null) throw new ArgumentException(SR.GetString(SR.Role_provider_name_invalid), "providerName"); _Identity = identity; Init(); } public RolePrincipal(string providerName, IIdentity identity, string encryptedTicket ) { if (identity == null) throw new ArgumentNullException( "identity" ); if (encryptedTicket == null) throw new ArgumentNullException( "encryptedTicket" ); if( providerName == null) throw new ArgumentException( SR.GetString( SR.Role_provider_name_invalid ), "providerName" ); _ProviderName = providerName; if (Roles.Providers[_ProviderName] == null) throw new ArgumentException(SR.GetString(SR.Role_provider_name_invalid), "providerName"); _Identity = identity; if (identity.IsAuthenticated) InitFromEncryptedTicket(encryptedTicket); else Init(); } private void InitFromEncryptedTicket( string encryptedTicket ) { if (HostingEnvironment.IsHosted && EtwTrace.IsTraceEnabled(EtwTraceLevel.Information, EtwTraceFlags.AppSvc)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_ROLE_BEGIN, HttpContext.Current.WorkerRequest); if (string.IsNullOrEmpty(encryptedTicket)) goto Exit; byte[] bTicket = CookieProtectionHelper.Decode(Roles.CookieProtectionValue, encryptedTicket); if (bTicket == null) goto Exit; RolePrincipal rp = null; MemoryStream ms = null; try{ ms = new System.IO.MemoryStream(bTicket); rp = (new BinaryFormatter()).Deserialize(ms) as RolePrincipal; } catch { } finally { ms.Close(); } if (rp == null) goto Exit; if (!StringUtil.EqualsIgnoreCase(rp._Username, _Identity.Name)) goto Exit; if (!StringUtil.EqualsIgnoreCase(rp._ProviderName, _ProviderName)) goto Exit; if (DateTime.UtcNow > rp._ExpireDate) goto Exit; _Version = rp._Version; _ExpireDate = rp._ExpireDate; _IssueDate = rp._IssueDate; _IsRoleListCached = rp._IsRoleListCached; _CachedListChanged = false; _Username = rp._Username; _Roles = rp._Roles; RenewIfOld(); if (HostingEnvironment.IsHosted && EtwTrace.IsTraceEnabled(EtwTraceLevel.Information, EtwTraceFlags.AppSvc)) EtwTrace.Trace( EtwTraceType.ETW_TYPE_ROLE_END, HttpContext.Current.WorkerRequest, "RolePrincipal", _Identity.Name); return; Exit: Init(); _CachedListChanged = true; if (HostingEnvironment.IsHosted && EtwTrace.IsTraceEnabled(EtwTraceLevel.Information, EtwTraceFlags.AppSvc)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_ROLE_END, HttpContext.Current.WorkerRequest, "RolePrincipal", _Identity.Name); return; } //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// private void Init() { _Version = 1; _IssueDate = DateTime.UtcNow; _ExpireDate = DateTime.UtcNow.AddMinutes(Roles.CookieTimeout); //_CookiePath = Roles.CookiePath; _IsRoleListCached = false; _CachedListChanged = false; if (_ProviderName == null) _ProviderName = Roles.Provider.Name; if (_Roles == null) _Roles = new HybridDictionary(true); if (_Identity != null) _Username = _Identity.Name; } //////////////////////////////////////////////////////////// // Public properties public int Version { get { return _Version;}} public DateTime ExpireDate { get { return _ExpireDate.ToLocalTime();}} public DateTime IssueDate { get { return _IssueDate.ToLocalTime();}} public bool Expired { get { return _ExpireDate < DateTime.Now;}} public String CookiePath { get { return Roles.CookiePath;}} // public IIdentity Identity { get { return _Identity; }} public bool IsRoleListCached { get { return _IsRoleListCached; }} public bool CachedListChanged { get { return _CachedListChanged; }} public string ProviderName { get { return _ProviderName; } } //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// // Public functions [SecurityPermission(SecurityAction.Assert, Flags = SecurityPermissionFlag.SerializationFormatter)] public string ToEncryptedTicket() { if (!Roles.Enabled) return null; if (_Identity != null && !_Identity.IsAuthenticated) return null; if (_Identity == null && string.IsNullOrEmpty(_Username)) return null; if (_Roles.Count > Roles.MaxCachedResults) return null; MemoryStream ms = new System.IO.MemoryStream(); byte[] buf = null; IIdentity id = _Identity; try { _Identity = null; BinaryFormatter bf = new BinaryFormatter(); bf.Serialize(ms, this); buf = ms.ToArray(); } finally { ms.Close(); _Identity = id; } return CookieProtectionHelper.Encode(Roles.CookieProtectionValue, buf, buf.Length); } //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// private void RenewIfOld() { if (!Roles.CookieSlidingExpiration) return; DateTime dtN = DateTime.UtcNow; TimeSpan t1 = dtN - _IssueDate; TimeSpan t2 = _ExpireDate - dtN; if (t2 > t1) return; _ExpireDate = dtN + (_ExpireDate - _IssueDate); _IssueDate = dtN; _CachedListChanged = true; } //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// public string[] GetRoles() { if (_Identity == null) throw new ProviderException(SR.GetString(SR.Role_Principal_not_fully_constructed)); if (!_Identity.IsAuthenticated) return new string[0]; string[] roles; if (!_IsRoleListCached || !_GetRolesCalled) { _Roles.Clear(); roles = Roles.Providers[_ProviderName].GetRolesForUser(Identity.Name); foreach (string role in roles) if (_Roles[role] == null) _Roles.Add(role, String.Empty); _IsRoleListCached = true; _CachedListChanged = true; _GetRolesCalled = true; return roles; } else { roles = new string[_Roles.Count]; int index = 0; foreach (string role in _Roles.Keys) roles[index++] = role; return roles; } } //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// public bool IsInRole(string role) { if (_Identity == null) throw new ProviderException(SR.GetString(SR.Role_Principal_not_fully_constructed)); if (!_Identity.IsAuthenticated || role == null) return false; role = role.Trim(); if (!IsRoleListCached) { _Roles.Clear(); string[] roles = Roles.Providers[_ProviderName].GetRolesForUser(Identity.Name); foreach(string roleTemp in roles) if (_Roles[roleTemp] == null) _Roles.Add(roleTemp, String.Empty); _IsRoleListCached = true; _CachedListChanged = true; } return _Roles[role] != null; } public void SetDirty() { _IsRoleListCached = false; _CachedListChanged = true; } private RolePrincipal(SerializationInfo info, StreamingContext context) { _Version = info.GetInt32("_Version"); _ExpireDate = info.GetDateTime("_ExpireDate"); _IssueDate = info.GetDateTime("_IssueDate"); try { _Identity = info.GetValue("_Identity", typeof(IIdentity)) as IIdentity; } catch { } // Ignore Exceptions _ProviderName = info.GetString("_ProviderName"); _Username = info.GetString("_Username"); _IsRoleListCached = info.GetBoolean("_IsRoleListCached"); _Roles = new HybridDictionary(true); string allRoles = info.GetString("_AllRoles"); if (allRoles != null) { foreach(string role in allRoles.Split(new char[] {','})) if (_Roles[role] == null) _Roles.Add(role, String.Empty); } } void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context) { info.AddValue("_Version", _Version); info.AddValue("_ExpireDate", _ExpireDate); info.AddValue("_IssueDate", _IssueDate); if (_Identity != null) { try { info.AddValue("_Identity", _Identity); } catch { } // Ignore Exceptions } info.AddValue("_ProviderName", _ProviderName); info.AddValue("_Username", _Identity == null ? _Username : _Identity.Name); info.AddValue("_IsRoleListCached", _IsRoleListCached); if (_Roles.Count > 0) { StringBuilder sb = new StringBuilder(_Roles.Count * 10); foreach(object role in _Roles.Keys) sb.Append(((string)role) + ","); string allRoles = sb.ToString(); info.AddValue("_AllRoles", allRoles.Substring(0, allRoles.Length - 1)); } else { info.AddValue("_AllRoles", String.Empty); } } //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// private int _Version; private DateTime _ExpireDate; private DateTime _IssueDate; private IIdentity _Identity; private string _ProviderName; private string _Username; private bool _IsRoleListCached; private bool _CachedListChanged; [NonSerialized] private HybridDictionary _Roles = null; [NonSerialized] private bool _GetRolesCalled; //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// } }
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