Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / clr / src / BCL / System / Security / Principal / Win32.cs / 1 / Win32.cs
// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
using Microsoft.Win32;
using Microsoft.Win32.SafeHandles;
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using System.Text;
namespace System.Security.Principal
{
using BOOL = System.Int32;
using DWORD = System.UInt32;
using System.Globalization;
[Flags]
internal enum PolicyRights
{
POLICY_VIEW_LOCAL_INFORMATION = 0x00000001,
POLICY_VIEW_AUDIT_INFORMATION = 0x00000002,
POLICY_GET_PRIVATE_INFORMATION = 0x00000004,
POLICY_TRUST_ADMIN = 0x00000008,
POLICY_CREATE_ACCOUNT = 0x00000010,
POLICY_CREATE_SECRET = 0x00000020,
POLICY_CREATE_PRIVILEGE = 0x00000040,
POLICY_SET_DEFAULT_QUOTA_LIMITS = 0x00000080,
POLICY_SET_AUDIT_REQUIREMENTS = 0x00000100,
POLICY_AUDIT_LOG_ADMIN = 0x00000200,
POLICY_SERVER_ADMIN = 0x00000400,
POLICY_LOOKUP_NAMES = 0x00000800,
POLICY_NOTIFICATION = 0x00001000,
}
internal sealed class Win32
{
internal const BOOL FALSE = 0;
internal const BOOL TRUE = 1;
private static bool _LsaApisSupported;
private static bool _LsaLookupNames2Supported;
private static bool _ConvertStringSidToSidSupported;
private static bool _WellKnownSidApisSupported;
static Win32()
{
Win32Native.OSVERSIONINFO osvi = new Win32Native.OSVERSIONINFO();
bool r = Win32Native.GetVersionEx(osvi);
if ( !r )
{
BCLDebug.Assert( r, "OSVersion native call failed." );
throw new SystemException( Environment.GetResourceString( "InvalidOperation_GetVersion" ));
}
if ( osvi.PlatformId == Win32Native.VER_PLATFORM_WIN32_NT &&
osvi.MajorVersion >= 5 ) // Windows 2000/XP/W2K3 and above
{
//
// ConvertStringSidToSid and lsa apis supported only on Windows 2000 and greater
//
_ConvertStringSidToSidSupported = true;
_LsaApisSupported = true;
if (osvi.MajorVersion > 5 || osvi.MinorVersion > 0 ) // Windows XP/2003 and above
{
//
// LsaLookupNames2 supported only on XP and Windows 2003 and above
//
_LsaLookupNames2Supported = true;
_WellKnownSidApisSupported = true;
}
else
{
// Win2000
_LsaLookupNames2Supported = false;
//
// WellKnownSid apis are only supported on Windows 2000 SP3 and above
// (so we need sp info)
//
Win32Native.OSVERSIONINFOEX osviex = new Win32Native.OSVERSIONINFOEX();
r = Win32Native.GetVersionEx(osviex);
if ( !r )
{
BCLDebug.Assert( r, "OSVersion native call failed");
throw new SystemException( Environment.GetResourceString( "InvalidOperation_GetVersion" ));
}
if (osviex.ServicePackMajor < 3)
{
_WellKnownSidApisSupported = false;
}
else
{
_WellKnownSidApisSupported = true;
}
}
}
else
{
//
// Win9x
//
_LsaApisSupported = false;
_LsaLookupNames2Supported = false;
_ConvertStringSidToSidSupported = false;
_WellKnownSidApisSupported = false;
}
}
private Win32() {} // to avoid generation of default constructor
internal static bool SddlConversionSupported
{
get {
return _ConvertStringSidToSidSupported;
}
}
internal static bool LsaApisSupported
{
get {
return _LsaApisSupported;
}
}
internal static bool LsaLookupNames2Supported
{
get {
return _LsaLookupNames2Supported;
}
}
internal static bool WellKnownSidApisSupported
{
get {
return _WellKnownSidApisSupported;
}
}
//
// Wrapper around advapi32.LsaOpenPolicy
//
internal static SafeLsaPolicyHandle LsaOpenPolicy(
string systemName,
PolicyRights rights )
{
//
// Check if the api is supported
//
if (!LsaApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_Win9x" ));
}
uint ReturnCode;
SafeLsaPolicyHandle Result;
Win32Native.LSA_OBJECT_ATTRIBUTES Loa;
Loa.Length = Marshal.SizeOf( typeof( Win32Native.LSA_OBJECT_ATTRIBUTES ));
Loa.RootDirectory = IntPtr.Zero;
Loa.ObjectName = IntPtr.Zero;
Loa.Attributes = 0;
Loa.SecurityDescriptor = IntPtr.Zero;
Loa.SecurityQualityOfService = IntPtr.Zero;
if ( 0 == ( ReturnCode = Win32Native.LsaOpenPolicy( systemName, ref Loa, ( int )rights, out Result )))
{
return Result;
}
else if ( ReturnCode == Win32Native.STATUS_ACCESS_DENIED )
{
throw new UnauthorizedAccessException();
}
else if ( ReturnCode == Win32Native.STATUS_INSUFFICIENT_RESOURCES ||
ReturnCode == Win32Native.STATUS_NO_MEMORY )
{
throw new OutOfMemoryException();
}
else
{
int win32ErrorCode = Win32Native.LsaNtStatusToWinError(unchecked((int) ReturnCode));
BCLDebug.Assert( false, string.Format( CultureInfo.InvariantCulture, "Win32Native.LsaOpenPolicy returned unexpected error {0}", win32ErrorCode));
throw new SystemException(Win32Native.GetMessage(win32ErrorCode));
}
}
internal static byte[] ConvertIntPtrSidToByteArraySid( IntPtr binaryForm )
{
byte[] ResultSid;
//
// Verify the revision (just sanity, should never fail to be 1)
//
byte Revision = Marshal.ReadByte( binaryForm, 0 );
if ( Revision != SecurityIdentifier.Revision )
{
throw new ArgumentException(Environment.GetResourceString( "IdentityReference_InvalidSidRevision" ), "binaryForm");
}
//
// Need the subauthority count in order to figure out how many bytes to read
//
byte SubAuthorityCount = Marshal.ReadByte( binaryForm, 1 );
if ( SubAuthorityCount < 0 ||
SubAuthorityCount > SecurityIdentifier.MaxSubAuthorities )
{
throw new ArgumentException(Environment.GetResourceString( "IdentityReference_InvalidNumberOfSubauthorities", SecurityIdentifier.MaxSubAuthorities), "binaryForm");
}
//
// Compute the size of the binary form of this SID and allocate the memory
//
int BinaryLength = 1 + 1 + 6 + SubAuthorityCount * 4;
ResultSid = new byte[ BinaryLength ];
//
// Extract the data from the returned pointer
//
Marshal.Copy( binaryForm, ResultSid, 0, BinaryLength );
return ResultSid;
}
//
// Wrapper around advapi32.ConvertStringSidToSidW
//
internal static int CreateSidFromString(
string stringSid,
out byte[] resultSid
)
{
int ErrorCode;
IntPtr ByteArray = IntPtr.Zero;
if (!SddlConversionSupported)
{
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_Win9x" ));
}
try
{
if ( TRUE != Win32Native.ConvertStringSidToSid( stringSid, out ByteArray ))
{
ErrorCode = Marshal.GetLastWin32Error();
goto Error;
}
resultSid = ConvertIntPtrSidToByteArraySid( ByteArray );
}
finally
{
//
// Now is a good time to get rid of the returned pointer
//
Win32Native.LocalFree( ByteArray );
}
//
// Now invoke the SecurityIdentifier factory method to create the result
//
return Win32Native.ERROR_SUCCESS;
Error:
resultSid = null;
return ErrorCode;
}
//
// Wrapper around advapi32.CreateWellKnownSid
//
internal static int CreateWellKnownSid(
WellKnownSidType sidType,
SecurityIdentifier domainSid,
out byte[] resultSid
)
{
//
// Check if the api is supported
//
if (!WellKnownSidApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_RequiresW2kSP3" ));
}
//
// Passing an array as big as it can ever be is a small price to pay for
// not having to P/Invoke twice (once to get the buffer, once to get the data)
//
uint length = ( uint )SecurityIdentifier.MaxBinaryLength;
resultSid = new byte[ length ];
if ( FALSE != Win32Native.CreateWellKnownSid(( int )sidType, domainSid == null ? null : domainSid.BinaryForm, resultSid, ref length ))
{
return Win32Native.ERROR_SUCCESS;
}
else
{
resultSid = null;
return Marshal.GetLastWin32Error();
}
}
//
// Wrapper around advapi32.EqualDomainSid
//
internal static bool IsEqualDomainSid( SecurityIdentifier sid1, SecurityIdentifier sid2 )
{
//
// Check if the api is supported
//
if (!WellKnownSidApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_RequiresW2kSP3" ));
}
if ( sid1 == null || sid2 == null )
{
return false;
}
else
{
bool result;
byte[] BinaryForm1 = new Byte[sid1.BinaryLength];
sid1.GetBinaryForm( BinaryForm1, 0 );
byte[] BinaryForm2 = new Byte[sid2.BinaryLength];
sid2.GetBinaryForm( BinaryForm2, 0 );
return ( Win32Native.IsEqualDomainSid( BinaryForm1, BinaryForm2, out result ) == FALSE ? false : result );
}
}
//
// Wrapper around avdapi32.GetWindowsAccountDomainSid
//
internal static int GetWindowsAccountDomainSid(
SecurityIdentifier sid,
out SecurityIdentifier resultSid
)
{
//
// Check if the api is supported
//
if (!WellKnownSidApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_RequiresW2kSP3" ));
}
//
// Passing an array as big as it can ever be is a small price to pay for
// not having to P/Invoke twice (once to get the buffer, once to get the data)
//
byte[] BinaryForm = new Byte[sid.BinaryLength];
sid.GetBinaryForm( BinaryForm, 0 );
uint sidLength = ( uint )SecurityIdentifier.MaxBinaryLength;
byte[] resultSidBinary = new byte[ sidLength ];
if ( FALSE != Win32Native.GetWindowsAccountDomainSid( BinaryForm, resultSidBinary, ref sidLength ))
{
resultSid = new SecurityIdentifier( resultSidBinary, 0 );
return Win32Native.ERROR_SUCCESS;
}
else
{
resultSid = null;
return Marshal.GetLastWin32Error();
}
}
//
// Wrapper around advapi32.IsWellKnownSid
//
internal static bool IsWellKnownSid(
SecurityIdentifier sid,
WellKnownSidType type
)
{
//
// Check if the api is supported
//
if (!WellKnownSidApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_RequiresW2kSP3" ));
}
byte[] BinaryForm = new byte[sid.BinaryLength];
sid.GetBinaryForm( BinaryForm, 0 );
if ( FALSE == Win32Native.IsWellKnownSid( BinaryForm, ( int )type ))
{
return false;
}
else
{
return true;
}
}
// When the CLR is hosted, the host gets to implement these calls,
// otherwise, we call down into the Win32 APIs.
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern int ImpersonateLoggedOnUser (SafeTokenHandle hToken);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern int OpenThreadToken (TokenAccessLevels dwDesiredAccess, WinSecurityContext OpenAs, out SafeTokenHandle phThreadToken);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern int RevertToSelf ();
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern int SetThreadToken(SafeTokenHandle hToken);
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
using Microsoft.Win32;
using Microsoft.Win32.SafeHandles;
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using System.Text;
namespace System.Security.Principal
{
using BOOL = System.Int32;
using DWORD = System.UInt32;
using System.Globalization;
[Flags]
internal enum PolicyRights
{
POLICY_VIEW_LOCAL_INFORMATION = 0x00000001,
POLICY_VIEW_AUDIT_INFORMATION = 0x00000002,
POLICY_GET_PRIVATE_INFORMATION = 0x00000004,
POLICY_TRUST_ADMIN = 0x00000008,
POLICY_CREATE_ACCOUNT = 0x00000010,
POLICY_CREATE_SECRET = 0x00000020,
POLICY_CREATE_PRIVILEGE = 0x00000040,
POLICY_SET_DEFAULT_QUOTA_LIMITS = 0x00000080,
POLICY_SET_AUDIT_REQUIREMENTS = 0x00000100,
POLICY_AUDIT_LOG_ADMIN = 0x00000200,
POLICY_SERVER_ADMIN = 0x00000400,
POLICY_LOOKUP_NAMES = 0x00000800,
POLICY_NOTIFICATION = 0x00001000,
}
internal sealed class Win32
{
internal const BOOL FALSE = 0;
internal const BOOL TRUE = 1;
private static bool _LsaApisSupported;
private static bool _LsaLookupNames2Supported;
private static bool _ConvertStringSidToSidSupported;
private static bool _WellKnownSidApisSupported;
static Win32()
{
Win32Native.OSVERSIONINFO osvi = new Win32Native.OSVERSIONINFO();
bool r = Win32Native.GetVersionEx(osvi);
if ( !r )
{
BCLDebug.Assert( r, "OSVersion native call failed." );
throw new SystemException( Environment.GetResourceString( "InvalidOperation_GetVersion" ));
}
if ( osvi.PlatformId == Win32Native.VER_PLATFORM_WIN32_NT &&
osvi.MajorVersion >= 5 ) // Windows 2000/XP/W2K3 and above
{
//
// ConvertStringSidToSid and lsa apis supported only on Windows 2000 and greater
//
_ConvertStringSidToSidSupported = true;
_LsaApisSupported = true;
if (osvi.MajorVersion > 5 || osvi.MinorVersion > 0 ) // Windows XP/2003 and above
{
//
// LsaLookupNames2 supported only on XP and Windows 2003 and above
//
_LsaLookupNames2Supported = true;
_WellKnownSidApisSupported = true;
}
else
{
// Win2000
_LsaLookupNames2Supported = false;
//
// WellKnownSid apis are only supported on Windows 2000 SP3 and above
// (so we need sp info)
//
Win32Native.OSVERSIONINFOEX osviex = new Win32Native.OSVERSIONINFOEX();
r = Win32Native.GetVersionEx(osviex);
if ( !r )
{
BCLDebug.Assert( r, "OSVersion native call failed");
throw new SystemException( Environment.GetResourceString( "InvalidOperation_GetVersion" ));
}
if (osviex.ServicePackMajor < 3)
{
_WellKnownSidApisSupported = false;
}
else
{
_WellKnownSidApisSupported = true;
}
}
}
else
{
//
// Win9x
//
_LsaApisSupported = false;
_LsaLookupNames2Supported = false;
_ConvertStringSidToSidSupported = false;
_WellKnownSidApisSupported = false;
}
}
private Win32() {} // to avoid generation of default constructor
internal static bool SddlConversionSupported
{
get {
return _ConvertStringSidToSidSupported;
}
}
internal static bool LsaApisSupported
{
get {
return _LsaApisSupported;
}
}
internal static bool LsaLookupNames2Supported
{
get {
return _LsaLookupNames2Supported;
}
}
internal static bool WellKnownSidApisSupported
{
get {
return _WellKnownSidApisSupported;
}
}
//
// Wrapper around advapi32.LsaOpenPolicy
//
internal static SafeLsaPolicyHandle LsaOpenPolicy(
string systemName,
PolicyRights rights )
{
//
// Check if the api is supported
//
if (!LsaApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_Win9x" ));
}
uint ReturnCode;
SafeLsaPolicyHandle Result;
Win32Native.LSA_OBJECT_ATTRIBUTES Loa;
Loa.Length = Marshal.SizeOf( typeof( Win32Native.LSA_OBJECT_ATTRIBUTES ));
Loa.RootDirectory = IntPtr.Zero;
Loa.ObjectName = IntPtr.Zero;
Loa.Attributes = 0;
Loa.SecurityDescriptor = IntPtr.Zero;
Loa.SecurityQualityOfService = IntPtr.Zero;
if ( 0 == ( ReturnCode = Win32Native.LsaOpenPolicy( systemName, ref Loa, ( int )rights, out Result )))
{
return Result;
}
else if ( ReturnCode == Win32Native.STATUS_ACCESS_DENIED )
{
throw new UnauthorizedAccessException();
}
else if ( ReturnCode == Win32Native.STATUS_INSUFFICIENT_RESOURCES ||
ReturnCode == Win32Native.STATUS_NO_MEMORY )
{
throw new OutOfMemoryException();
}
else
{
int win32ErrorCode = Win32Native.LsaNtStatusToWinError(unchecked((int) ReturnCode));
BCLDebug.Assert( false, string.Format( CultureInfo.InvariantCulture, "Win32Native.LsaOpenPolicy returned unexpected error {0}", win32ErrorCode));
throw new SystemException(Win32Native.GetMessage(win32ErrorCode));
}
}
internal static byte[] ConvertIntPtrSidToByteArraySid( IntPtr binaryForm )
{
byte[] ResultSid;
//
// Verify the revision (just sanity, should never fail to be 1)
//
byte Revision = Marshal.ReadByte( binaryForm, 0 );
if ( Revision != SecurityIdentifier.Revision )
{
throw new ArgumentException(Environment.GetResourceString( "IdentityReference_InvalidSidRevision" ), "binaryForm");
}
//
// Need the subauthority count in order to figure out how many bytes to read
//
byte SubAuthorityCount = Marshal.ReadByte( binaryForm, 1 );
if ( SubAuthorityCount < 0 ||
SubAuthorityCount > SecurityIdentifier.MaxSubAuthorities )
{
throw new ArgumentException(Environment.GetResourceString( "IdentityReference_InvalidNumberOfSubauthorities", SecurityIdentifier.MaxSubAuthorities), "binaryForm");
}
//
// Compute the size of the binary form of this SID and allocate the memory
//
int BinaryLength = 1 + 1 + 6 + SubAuthorityCount * 4;
ResultSid = new byte[ BinaryLength ];
//
// Extract the data from the returned pointer
//
Marshal.Copy( binaryForm, ResultSid, 0, BinaryLength );
return ResultSid;
}
//
// Wrapper around advapi32.ConvertStringSidToSidW
//
internal static int CreateSidFromString(
string stringSid,
out byte[] resultSid
)
{
int ErrorCode;
IntPtr ByteArray = IntPtr.Zero;
if (!SddlConversionSupported)
{
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_Win9x" ));
}
try
{
if ( TRUE != Win32Native.ConvertStringSidToSid( stringSid, out ByteArray ))
{
ErrorCode = Marshal.GetLastWin32Error();
goto Error;
}
resultSid = ConvertIntPtrSidToByteArraySid( ByteArray );
}
finally
{
//
// Now is a good time to get rid of the returned pointer
//
Win32Native.LocalFree( ByteArray );
}
//
// Now invoke the SecurityIdentifier factory method to create the result
//
return Win32Native.ERROR_SUCCESS;
Error:
resultSid = null;
return ErrorCode;
}
//
// Wrapper around advapi32.CreateWellKnownSid
//
internal static int CreateWellKnownSid(
WellKnownSidType sidType,
SecurityIdentifier domainSid,
out byte[] resultSid
)
{
//
// Check if the api is supported
//
if (!WellKnownSidApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_RequiresW2kSP3" ));
}
//
// Passing an array as big as it can ever be is a small price to pay for
// not having to P/Invoke twice (once to get the buffer, once to get the data)
//
uint length = ( uint )SecurityIdentifier.MaxBinaryLength;
resultSid = new byte[ length ];
if ( FALSE != Win32Native.CreateWellKnownSid(( int )sidType, domainSid == null ? null : domainSid.BinaryForm, resultSid, ref length ))
{
return Win32Native.ERROR_SUCCESS;
}
else
{
resultSid = null;
return Marshal.GetLastWin32Error();
}
}
//
// Wrapper around advapi32.EqualDomainSid
//
internal static bool IsEqualDomainSid( SecurityIdentifier sid1, SecurityIdentifier sid2 )
{
//
// Check if the api is supported
//
if (!WellKnownSidApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_RequiresW2kSP3" ));
}
if ( sid1 == null || sid2 == null )
{
return false;
}
else
{
bool result;
byte[] BinaryForm1 = new Byte[sid1.BinaryLength];
sid1.GetBinaryForm( BinaryForm1, 0 );
byte[] BinaryForm2 = new Byte[sid2.BinaryLength];
sid2.GetBinaryForm( BinaryForm2, 0 );
return ( Win32Native.IsEqualDomainSid( BinaryForm1, BinaryForm2, out result ) == FALSE ? false : result );
}
}
//
// Wrapper around avdapi32.GetWindowsAccountDomainSid
//
internal static int GetWindowsAccountDomainSid(
SecurityIdentifier sid,
out SecurityIdentifier resultSid
)
{
//
// Check if the api is supported
//
if (!WellKnownSidApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_RequiresW2kSP3" ));
}
//
// Passing an array as big as it can ever be is a small price to pay for
// not having to P/Invoke twice (once to get the buffer, once to get the data)
//
byte[] BinaryForm = new Byte[sid.BinaryLength];
sid.GetBinaryForm( BinaryForm, 0 );
uint sidLength = ( uint )SecurityIdentifier.MaxBinaryLength;
byte[] resultSidBinary = new byte[ sidLength ];
if ( FALSE != Win32Native.GetWindowsAccountDomainSid( BinaryForm, resultSidBinary, ref sidLength ))
{
resultSid = new SecurityIdentifier( resultSidBinary, 0 );
return Win32Native.ERROR_SUCCESS;
}
else
{
resultSid = null;
return Marshal.GetLastWin32Error();
}
}
//
// Wrapper around advapi32.IsWellKnownSid
//
internal static bool IsWellKnownSid(
SecurityIdentifier sid,
WellKnownSidType type
)
{
//
// Check if the api is supported
//
if (!WellKnownSidApisSupported) {
throw new PlatformNotSupportedException( Environment.GetResourceString( "PlatformNotSupported_RequiresW2kSP3" ));
}
byte[] BinaryForm = new byte[sid.BinaryLength];
sid.GetBinaryForm( BinaryForm, 0 );
if ( FALSE == Win32Native.IsWellKnownSid( BinaryForm, ( int )type ))
{
return false;
}
else
{
return true;
}
}
// When the CLR is hosted, the host gets to implement these calls,
// otherwise, we call down into the Win32 APIs.
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern int ImpersonateLoggedOnUser (SafeTokenHandle hToken);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern int OpenThreadToken (TokenAccessLevels dwDesiredAccess, WinSecurityContext OpenAs, out SafeTokenHandle phThreadToken);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern int RevertToSelf ();
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern int SetThreadToken(SafeTokenHandle hToken);
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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