AccessControlList.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Services / Messaging / System / Messaging / AccessControlList.cs / 1305376 / AccessControlList.cs
                        
                        
                            using System; 
using System.Security.Permissions;
using System.Security;
using System.Collections;
using System.Runtime.InteropServices; 
using System.ComponentModel;
using System.Text; 
using System.Messaging.Interop; 

namespace System.Messaging { 

    /// 
    /// 
    ///    [To be supplied.] 
    /// 
 	[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1039:ListsAreStronglyTyped")] 
	[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1710:IdentifiersShouldHaveCorrectSuffix")] 
    public class AccessControlList : CollectionBase {
 
        internal static readonly int UnknownEnvironment = 0;
        internal static readonly int W2kEnvironment = 1;
        internal static readonly int NtEnvironment = 2;
        internal static readonly int NonNtEnvironment = 3; 
        private static int environment = UnknownEnvironment;
 
		private static object staticLock = new object(); 

        ///  
        public AccessControlList() {
        }

        internal static int CurrentEnvironment { 
            get {
                if (environment == UnknownEnvironment) { 
                    lock (AccessControlList.staticLock) { 
                        if (environment == UnknownEnvironment) {
                            //SECREVIEW: [....]- need to assert Environment permissions here 
                            //                        the environment check is not exposed as a public
                            //                        method
                            EnvironmentPermission environmentPermission = new EnvironmentPermission(PermissionState.Unrestricted);
                            environmentPermission.Assert(); 
                            try {
                                if (Environment.OSVersion.Platform == PlatformID.Win32NT)  { 
                                    if (Environment.OSVersion.Version.Major >= 5) 
                                        environment = W2kEnvironment;
                                    else 
                                        environment = NtEnvironment;
                                }
                                else
                                    environment = NonNtEnvironment; 
                            }
                            finally { 
                                 EnvironmentPermission.RevertAssert(); 
                            }
                        } 
                    }
                }

                return environment; 
            }
        } 
 
        /// 
        ///  
        ///    [To be supplied.]
        /// 
        public int Add(AccessControlEntry entry) {
            return List.Add(entry); 
        }
 
        ///  
        /// 
        ///    [To be supplied.] 
        /// 
        public void Insert(int index, AccessControlEntry entry) {
            List.Insert(index, entry);
        } 

        ///  
        ///  
        ///    [To be supplied.]
        ///  
        public int IndexOf(AccessControlEntry entry) {
            return List.IndexOf(entry);
        }
 
        internal static void CheckEnvironment() {
            if (CurrentEnvironment == NonNtEnvironment) 
                throw new PlatformNotSupportedException(Res.GetString(Res.WinNTRequired)); 
        }
 
        /// 
        /// 
        ///    [To be supplied.]
        ///  
        public bool Contains(AccessControlEntry entry) {
            return List.Contains(entry); 
        } 

        ///  
        /// 
        ///    [To be supplied.]
        /// 
        public void Remove(AccessControlEntry entry) { 
            List.Remove(entry);
        } 
 
        /// 
        ///  
        ///    [To be supplied.]
        /// 
        public void CopyTo(AccessControlEntry[] array, int index) {
            List.CopyTo(array, index); 
        }
 
        internal IntPtr MakeAcl(IntPtr oldAcl) { 
            CheckEnvironment();
 
            int ACECount = List.Count;
            IntPtr newAcl;

            NativeMethods.ExplicitAccess[] entries = new NativeMethods.ExplicitAccess[ACECount]; 

            GCHandle mem = GCHandle.Alloc(entries, GCHandleType.Pinned); 
            try { 
                for (int i = 0; i < ACECount; i++) {
                    int sidSize = 0; 
                    int sidtype;
                    int domainSize = 0;

                    AccessControlEntry ace = (AccessControlEntry)List[i]; 

                    if (ace.Trustee == null) 
                        throw new InvalidOperationException(Res.GetString(Res.InvalidTrustee)); 

                    string name = ace.Trustee.Name; 
                    if (name == null)
                        throw new InvalidOperationException(Res.GetString(Res.InvalidTrusteeName));

                    if ((ace.Trustee.TrusteeType == TrusteeType.Computer) && !name.EndsWith("$")) 
                        name += "$";
 
                    if (!UnsafeNativeMethods.LookupAccountName(ace.Trustee.SystemName, name, (IntPtr)0, ref sidSize, null, ref domainSize, out sidtype)) { 
                        int errval = Marshal.GetLastWin32Error();
                        if (errval != 122) 
                            throw new InvalidOperationException(Res.GetString(Res.CouldntResolve ,ace.Trustee.Name, errval));
                    }

                    entries[i].data = (IntPtr)Marshal.AllocHGlobal(sidSize); 

                    StringBuilder domainName = new StringBuilder(domainSize); 
                    if (!UnsafeNativeMethods.LookupAccountName(ace.Trustee.SystemName, name, entries[i].data, ref sidSize, domainName, ref domainSize, out sidtype)) 
                        throw new InvalidOperationException(Res.GetString(Res.CouldntResolveName, ace.Trustee.Name));
 
                    entries[i].grfAccessPermissions     = ace.accessFlags;
                    entries[i].grfAccessMode            = (int)ace.EntryType;
                    entries[i].grfInheritance           = 0;
                    entries[i].pMultipleTrustees        = (IntPtr)0; 
                    entries[i].MultipleTrusteeOperation = NativeMethods.NO_MULTIPLE_TRUSTEE;
                    entries[i].TrusteeForm              = NativeMethods.TRUSTEE_IS_SID; 
                    entries[i].TrusteeType              = (int)ace.Trustee.TrusteeType; 
                }
 
                int err = SafeNativeMethods.SetEntriesInAclW(ACECount, (IntPtr)mem.AddrOfPinnedObject(), oldAcl, out newAcl);

                if (err != NativeMethods.ERROR_SUCCESS)
                    throw new Win32Exception(err); 
            }
            finally { 
                mem.Free(); 

                for (int i = 0; i < ACECount; i++) 
                    if (entries[i].data != (IntPtr)0)
                        Marshal.FreeHGlobal(entries[i].data);

            } 

 
            return newAcl; 
        }
 
        internal static void FreeAcl(IntPtr acl) {
            SafeNativeMethods.LocalFree(acl);
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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AccessControlList.cs source code in C# .NET

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