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windows-xp/Source/XPSP1/NT/base/cluster/mgmt/cluscfg/basecluster/cclussvcaccountconfig.cpp

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//////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 1999-2001 Microsoft Corporation
//
// Module Name:
// CClusSvcAccountConfig.cpp
//
// Description:
// Contains the definition of the CClusSvcAccountConfig class.
//
// Maintained By:
// David Potter (DavidP) 30-MAR-2001
// Vij Vasu (Vvasu) 08-MAR-2000
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
// Include Files
//////////////////////////////////////////////////////////////////////////////
// The precompiled header.
#include "Pch.h"
// The header for this file
#include "CClusSvcAccountConfig.h"
// For the CBaseClusterAddNode class.
#include "CBaseClusterAddNode.h"
// For the net local group functions.
#include <lmaccess.h>
// For NERR_Success
#include <lmerr.h>
//////////////////////////////////////////////////////////////////////////////
// Global Variables
//////////////////////////////////////////////////////////////////////////////
// Array of the names of rights to be granted to the cluster service account.
static const WCHAR * const gs_rgpcszRightsArray[] = {
SE_SERVICE_LOGON_NAME
, SE_BACKUP_NAME
, SE_RESTORE_NAME
, SE_INCREASE_QUOTA_NAME
, SE_INC_BASE_PRIORITY_NAME
, SE_TCB_NAME
};
const UINT gc_uiRightsArraySize = sizeof( gs_rgpcszRightsArray ) / sizeof( gs_rgpcszRightsArray[0] );
//////////////////////////////////////////////////////////////////////////////
//++
//
// CClusSvcAccountConfig::CClusSvcAccountConfig()
//
// Description:
// Constructor of the CClusSvcAccountConfig class
//
// Arguments:
// pbcanParentActionIn
// Pointer to the base cluster action of which this action is a part.
//
// Return Value:
// None.
//
// Exceptions Thrown:
// CRuntimeError
// If any of the APIs fail.
//
// Any exceptions thrown by underlying functions
//
//--
//////////////////////////////////////////////////////////////////////////////
CClusSvcAccountConfig::CClusSvcAccountConfig(
CBaseClusterAddNode * pbcanParentActionIn
)
: m_pbcanParentAction( pbcanParentActionIn )
, m_fWasAreadyInGroup( true )
, m_fRightsGrantSuccessful( false )
, m_fRemoveAllRights( false )
{
BCATraceScope( "" );
DWORD dwError = ERROR_SUCCESS;
UINT uiIndex;
// Indicate that action can be rolled back.
SetRollbackPossible( true );
do
{
PSID psidAdministrators = NULL;
SID_IDENTIFIER_AUTHORITY siaNtAuthority = SECURITY_NT_AUTHORITY;
DWORD dwNameSize = 0;
DWORD dwDomainSize = 0;
SID_NAME_USE snuSidNameUse;
//
// Get the Admins SID
//
if ( AllocateAndInitializeSid(
&siaNtAuthority // identifier authority
, 2 // count of subauthorities
, SECURITY_BUILTIN_DOMAIN_RID // subauthority 0
, DOMAIN_ALIAS_RID_ADMINS // subauthority 1
, 0 // subauthority 2
, 0 // subauthority 3
, 0 // subauthority 4
, 0 // subauthority 5
, 0 // subauthority 6
, 0 // subauthority 7
, &psidAdministrators // pointer to pointer to SID
)
== 0
)
{
DWORD dwError = TW32( GetLastError() );
TraceFlow1( "Error %#08x occurred trying get the Administrators group SID.", dwError );
break;
} // if: AllocateAndInitializeSid() failed
// Assign the allocated SID to to the member variable.
m_ssidAdminSid.Assign( psidAdministrators );
//
// Look up the administrators group name and store it.
//
// Find out how much space is required by the name.
if ( LookupAccountSid(
NULL
, psidAdministrators
, NULL
, &dwNameSize
, NULL
, &dwDomainSize
, &snuSidNameUse
)
== FALSE
)
{
dwError = GetLastError();
if ( dwError != ERROR_INSUFFICIENT_BUFFER )
{
TW32( dwError );
TraceFlow( "LookupAccountSid() failed while querying for required buffer size." );
break;
} // if: something else has gone wrong.
else
{
// This is expected.
dwError = ERROR_SUCCESS;
} // if: ERROR_INSUFFICIENT_BUFFER was returned.
} // if: LookupAccountSid failed
// Allocate memory for the admin group name and the domain name.
m_sszAdminGroupName.Assign( new WCHAR[ dwNameSize ] );
SmartSz sszDomainName( new WCHAR[ dwDomainSize ] );
if ( m_sszAdminGroupName.FIsEmpty() || sszDomainName.FIsEmpty() )
{
dwError = ERROR_OUTOFMEMORY;
break;
} // if: there wasn't enough memory
// Get the admin group name.
if ( LookupAccountSid(
NULL
, psidAdministrators
, m_sszAdminGroupName.PMem()
, &dwNameSize
, sszDomainName.PMem()
, &dwDomainSize
, &snuSidNameUse
)
== FALSE
)
{
dwError = GetLastError();
TraceFlow( "LookupAccountSid() failed while attempting to get the admin group name." );
break;
} // if: LookupAccountSid failed
}
while( false ); // dummy do-while loop to avoid gotos.
if ( dwError != ERROR_SUCCESS )
{
LogMsg( "Error %#08x occurred trying to get information about the administrators group.", dwError );
TraceFlow1( "Error %#08x occurred trying to get information about the administrators group. Throwing exception.", dwError );
THROW_RUNTIME_ERROR( HRESULT_FROM_WIN32( dwError ), IDS_ERROR_GET_ADMIN_GROUP_INFO );
} // if: something went wrong.
} //*** CClusSvcAccountConfig::CClusSvcAccountConfig()
//////////////////////////////////////////////////////////////////////////////
//++
//
// CClusSvcAccountConfig::~CClusSvcAccountConfig()
//
// Description:
// Destructor of the CClusSvcAccountConfig class.
//
// Arguments:
// None.
//
// Return Value:
// None.
//
// Exceptions Thrown:
// Any exceptions thrown by underlying functions
//
//--
//////////////////////////////////////////////////////////////////////////////
CClusSvcAccountConfig::~CClusSvcAccountConfig( void )
{
BCATraceScope( "" );
} //*** CClusSvcAccountConfig::~CClusSvcAccountConfig()
//////////////////////////////////////////////////////////////////////////////
//++
//
// void
// CClusSvcAccountConfig::Commit()
//
// Description:
// Grant the required rights to the account.
//
// Arguments:
// None.
//
// Return Value:
// None.
//
// Exceptions Thrown:
// Any that are thrown by the contained actions.
//
//--
//////////////////////////////////////////////////////////////////////////////
void
CClusSvcAccountConfig::Commit( void )
{
BCATraceScope( "" );
// Call the base class commit method.
BaseClass::Commit();
try
{
// Configure the account.
ConfigureAccount();
} // try:
catch( ... )
{
// If we are here, then something went wrong with the create.
TraceFlow( "Caught exception during commit." );
//
// Cleanup anything that the failed create might have done.
// Catch any exceptions thrown during Cleanup to make sure that there
// is no collided unwind.
//
try
{
RevertAccount();
}
catch( ... )
{
//
// The rollback of the committed action has failed.
// There is nothing that we can do.
// We certainly cannot rethrow this exception, since
// the exception that caused the rollback is more important.
//
THR( E_UNEXPECTED );
TraceFlow( "Caught exception during cleanup." );
LogMsg( "THIS COMPUTER MAY BE IN AN INVALID STATE. An error has occurred during cleanup." );
} // catch: all
// Rethrow the exception thrown by commit.
throw;
} // catch: all
// If we are here, then everything went well.
SetCommitCompleted( true );
} //*** CClusSvcAccountConfig::Commit()
//////////////////////////////////////////////////////////////////////////////
//++
//
// void
// CClusSvcAccountConfig::Rollback()
//
// Description:
// Roll the account back to the state it was in before we tried to
// grant it the required privileges.
//
// Arguments:
// None.
//
// Return Value:
// None.
//
// Exceptions Thrown:
// Any that are thrown by the underlying functions.
//
//--
//////////////////////////////////////////////////////////////////////////////
void
CClusSvcAccountConfig::Rollback( void )
{
BCATraceScope( "" );
// Call the base class rollback method.
BaseClass::Rollback();
// Bring the account back to its original state.
RevertAccount();
SetCommitCompleted( false );
} //*** CClusSvcAccountConfig::Rollback()
//////////////////////////////////////////////////////////////////////////////
//++
//
// void
// CClusSvcAccountConfig::ConfigureAccount()
//
// Description:
// Grant the account that will be the cluster service account the requried
// privileges.
//
// Arguments:
// None.
//
// Return Value:
// None.
//
// Exceptions Thrown:
// CRuntimeError
// If any of the APIs fail.
//
// Any that are thrown by the underlying functions.
//
//--
//////////////////////////////////////////////////////////////////////////////
void
CClusSvcAccountConfig::ConfigureAccount( void )
{
BCATraceScope( "" );
typedef CSmartResource<
CHandleTrait<
PLSA_UNICODE_STRING
, NTSTATUS
, reinterpret_cast< NTSTATUS (*)( PLSA_UNICODE_STRING ) >( LsaFreeMemory )
, reinterpret_cast< PLSA_UNICODE_STRING >( NULL )
>
>
SmartLsaUnicodeStringPtr;
NTSTATUS ntStatus;
PLSA_UNICODE_STRING plusAccountRights = NULL;
ULONG ulOriginalRightsCount = 0;
ULONG rgulToBeGrantedIndex[ gc_uiRightsArraySize ];
ULONG ulIndex;
ULONG ulIndexInner;
DWORD dwError;
CStatusReport srConfigAcct(
m_pbcanParentAction->PBcaiGetInterfacePointer()
, TASKID_Major_Configure_Cluster_Services
, TASKID_Minor_Configuring_Cluster_Service_Account
, 0, 1
, IDS_TASK_CONFIG_CLUSSVC_ACCOUNT
);
// Send the next step of this status report.
srConfigAcct.SendNextStep( S_OK );
// Add the cluster service account to the local admin group.
m_fWasAreadyInGroup = FChangeAdminGroupMembership(
m_pbcanParentAction->PSidGetServiceAccountSID()
, true
);
LogMsg( "Determining the rights that need to be granted to the cluster service account." );
// Get the list of rights already granted to the cluster service account.
ntStatus = LsaEnumerateAccountRights(
m_pbcanParentAction->HGetLSAPolicyHandle()
, m_pbcanParentAction->PSidGetServiceAccountSID()
, &plusAccountRights
, &ulOriginalRightsCount
);
if ( ntStatus != STATUS_SUCCESS )
{
//
// LSA returns this error code if the account has no rights granted or denied to it
// locally. This is not an error as far as we are concerned.
//
if ( ntStatus == STATUS_OBJECT_NAME_NOT_FOUND )
{
ntStatus = STATUS_SUCCESS;
TraceFlow( "The account has no locally assigned rights." );
m_fRemoveAllRights = true;
plusAccountRights = NULL;
ulOriginalRightsCount = 0;
} // if: the account does not have any rights assigned locally to it.
else
{
THR( ntStatus );
LogMsg( "Error %#08x occurred trying to enumerate the cluster service account rights.", ntStatus );
TraceFlow1( "Error %#08x occurred trying to enumerate the cluster service account rights. Throwing exception", ntStatus );
THROW_RUNTIME_ERROR( ntStatus, IDS_ERROR_ACCOUNT_RIGHTS_CONFIG );
} // else: something went wrong.
} // if: LsaEnumerateAccountRights() failed
// Store the account rights just enumerated in a smart pointer for automatic release.
SmartLsaUnicodeStringPtr splusOriginalRights( plusAccountRights );
// Initialize the count of rights to be granted.
m_ulRightsToBeGrantedCount = 0;
// Determine which of the rights that we are going to grant the account are already granted.
for ( ulIndex = 0; ulIndex < gc_uiRightsArraySize; ++ulIndex )
{
bool fRightAlreadyGranted = false;
for ( ulIndexInner = 0; ulIndexInner < ulOriginalRightsCount; ++ulIndexInner )
{
const WCHAR * pchGrantedRight = plusAccountRights[ ulIndexInner ].Buffer;
USHORT usCharCount = plusAccountRights[ ulIndexInner ].Length / sizeof( *pchGrantedRight );
const WCHAR * pcszToBeGrantedRight = gs_rgpcszRightsArray[ ulIndex ];
// Do our own string compare since LSA_UNICODE_STRING may not be '\0' terminated.
while ( ( usCharCount > 0 ) && ( *pcszToBeGrantedRight != L'\0' ) )
{
if ( *pchGrantedRight != *pcszToBeGrantedRight )
{
break;
} // if: the current characters are not the same.
--usCharCount;
++pcszToBeGrantedRight;
++pchGrantedRight;
} // while: there are still characters to be compared
// The strings are equal.
if ( ( usCharCount == 0 ) && ( *pcszToBeGrantedRight == L'\0' ) )
{
fRightAlreadyGranted = true;
break;
} // if: the strings are equal
} // for: loop through the list of rights already granted to the account
// Is the current right already granted.
if ( ! fRightAlreadyGranted )
{
// The current right is not already granted.
rgulToBeGrantedIndex[ m_ulRightsToBeGrantedCount ] = ulIndex;
// One more right to be granted.
++m_ulRightsToBeGrantedCount;
} // if: the current right was not already granted
} // for: loop through the list of rights that we want to grant the account
//
// Create an array of LSA_UNICODE_STRINGs of right names to be granted and store it in the
// member variable.
//
m_srglusRightsToBeGrantedArray.Assign( new LSA_UNICODE_STRING[ m_ulRightsToBeGrantedCount ] );
if ( m_srglusRightsToBeGrantedArray.FIsEmpty() )
{
LogMsg( "A memory allocation error occurred trying to grant account rights." );
TraceFlow1( "Could not allocate %d bytes of memory. Throwing exception.", m_ulRightsToBeGrantedCount );
THROW_RUNTIME_ERROR(
E_OUTOFMEMORY
, IDS_ERROR_ACCOUNT_RIGHTS_CONFIG
);
} // if: memory allocation failed.
// Initialize the array.
for ( ulIndex = 0; ulIndex < m_ulRightsToBeGrantedCount; ++ ulIndex )
{
ULONG ulCurrentRightIndex = rgulToBeGrantedIndex[ ulIndex ];
TraceFlow1( "The '%ws' right will be granted.", gs_rgpcszRightsArray[ ulCurrentRightIndex ] );
// Add it to the list of rights to be granted.
InitLsaString(
const_cast< WCHAR * >( gs_rgpcszRightsArray[ ulCurrentRightIndex ] )
, m_srglusRightsToBeGrantedArray.PMem() + ulIndex
);
} // for: iterate through the list of rights that need to be granted
// Grant the rights.
ntStatus = THR( LsaAddAccountRights(
m_pbcanParentAction->HGetLSAPolicyHandle()
, m_pbcanParentAction->PSidGetServiceAccountSID()
, m_srglusRightsToBeGrantedArray.PMem()
, m_ulRightsToBeGrantedCount
) );
if ( ntStatus != STATUS_SUCCESS )
{
LogMsg( "Error %#08x occurred trying to grant the cluster service account rights.", ntStatus );
TraceFlow1( "Error %#08x occurred trying to grant the cluster service account rights. Throwing exception", ntStatus );
THROW_RUNTIME_ERROR( ntStatus, IDS_ERROR_ACCOUNT_RIGHTS_CONFIG );
} // if: LsaAddAccountRights() failed
m_fRightsGrantSuccessful = true;
// Send the last step of this status report.
srConfigAcct.SendNextStep( S_OK );
} //*** CClusSvcAccountConfig::ConfigureAccount()
//////////////////////////////////////////////////////////////////////////////
//++
//
// void
// CClusSvcAccountConfig::RevertAccount()
//
// Description:
// Bring the account back to its original state.
//
// Arguments:
// None.
//
// Return Value:
// None.
//
// Exceptions Thrown:
// Any that are thrown by the underlying functions.
//
//--
//////////////////////////////////////////////////////////////////////////////
void
CClusSvcAccountConfig::RevertAccount( void )
{
BCATraceScope( "" );
// Check if we granted any rights to the service account. If we did, revoke them.
if ( m_fRightsGrantSuccessful )
{
NTSTATUS ntStatus;
// Revoke the rights.
ntStatus = THR( LsaRemoveAccountRights(
m_pbcanParentAction->HGetLSAPolicyHandle()
, m_pbcanParentAction->PSidGetServiceAccountSID()
, m_fRemoveAllRights
, m_srglusRightsToBeGrantedArray.PMem()
, m_ulRightsToBeGrantedCount
) );
if ( ntStatus != STATUS_SUCCESS )
{
LogMsg( "Error %#08x occurred trying to remove the granted cluster service account rights.", ntStatus );
TraceFlow1( "Error %#08x occurred trying to remove the granted the cluster service account rights. Throwing exception", ntStatus );
THROW_RUNTIME_ERROR( ntStatus, IDS_ERROR_ACCOUNT_RIGHTS_CONFIG );
} // if: LsaRemoveAccountRights() failed
} // if: we granted the service account any rights.
// Check if we added the account to the admin group. If we did, remove it.
if ( ! m_fWasAreadyInGroup )
{
FChangeAdminGroupMembership( m_pbcanParentAction->PSidGetServiceAccountSID(), false );
} // if: we added the account to the admin group.
} //*** CClusSvcAccountConfig::RevertAccount()
//////////////////////////////////////////////////////////////////////////////
//++
//
// void
// CClusSvcAccountConfig::InitLsaString()
//
// Description:
// Initialize a LSA_UNICODE_STRING structure
//
// Arguments:
// pszSourceIn
// The string used to initialize the unicode string structure.
//
// plusUnicodeStringOut,
// The output unicode string structure.
//
// Return Value:
// None.
//
// Exceptions Thrown:
// None.
//
//--
//////////////////////////////////////////////////////////////////////////////
void
CClusSvcAccountConfig::InitLsaString(
LPWSTR pszSourceIn
, PLSA_UNICODE_STRING plusUnicodeStringOut
)
{
if ( pszSourceIn == NULL )
{
plusUnicodeStringOut->Buffer = NULL;
plusUnicodeStringOut->Length = 0;
plusUnicodeStringOut->MaximumLength = 0;
} // if: input string is NULL
else
{
plusUnicodeStringOut->Buffer = pszSourceIn;
plusUnicodeStringOut->Length = static_cast< USHORT >( wcslen( pszSourceIn ) * sizeof( *pszSourceIn ) );
plusUnicodeStringOut->MaximumLength = static_cast< USHORT >( plusUnicodeStringOut->Length + sizeof( *pszSourceIn ) );
} // else: input string is not NULL
} //*** CClusSvcAccountConfig::InitLsaString()
//////////////////////////////////////////////////////////////////////////////
//++
//
// bool
// CClusSvcAccountConfig::FChangeAdminGroupMembership()
//
// Description:
// Adds/removes an account to/from the administrators group.
//
// Arguments:
// psidAccountSidIn
// Pointer to the SID the of account to add/remove to/from administrators
// group.
//
// fAddIn
// The account is added to the administrators group if this parameter
// is true. The account is removed from the group otherwise.
//
// Return Value:
// true if the accound was already present/absent in/from the group.
// false otherwise.
//
// Exceptions Thrown:
// CRuntimeError
// If any of the APIs fail.
//
//--
//////////////////////////////////////////////////////////////////////////////
bool CClusSvcAccountConfig::FChangeAdminGroupMembership(
PSID psidAccountSidIn
, bool fAddIn
)
{
BCATraceScope( "" );
bool fWasAlreadyInGroup = false;
LOCALGROUP_MEMBERS_INFO_0 lgmiLocalGroupMemberInfo;
NET_API_STATUS nasStatus;
lgmiLocalGroupMemberInfo.lgrmi0_sid = psidAccountSidIn;
if ( fAddIn )
{
CStatusReport srAddAcctToAdminGroup(
m_pbcanParentAction->PBcaiGetInterfacePointer()
, TASKID_Major_Configure_Cluster_Services
, TASKID_Minor_Make_Cluster_Service_Account_Admin
, 0, 1
, IDS_TASK_MAKING_CLUSSVC_ACCOUNT_ADMIN
);
srAddAcctToAdminGroup.SendNextStep( S_OK );
nasStatus = NetLocalGroupAddMembers(
NULL
, m_sszAdminGroupName.PMem()
, 0
, reinterpret_cast< LPBYTE >( &lgmiLocalGroupMemberInfo )
, 1
);
if ( nasStatus == ERROR_MEMBER_IN_ALIAS )
{
LogMsg( "The account was already a member of the admin group." );
TraceFlow( "The account was already a member of the admin group." );
nasStatus = NERR_Success;
fWasAlreadyInGroup = true;
srAddAcctToAdminGroup.SendLastStep( S_OK, IDS_TASK_CLUSSVC_ACCOUNT_ALREADY_ADMIN );
} // if: the account was already a member of the admin group.
else
{
if ( nasStatus == NERR_Success )
{
TraceFlow( "The account has been added to the admin group." );
srAddAcctToAdminGroup.SendLastStep( S_OK );
fWasAlreadyInGroup = false;
} // if: everything was ok
else
{
HRESULT hr = HRESULT_FROM_WIN32( TW32( nasStatus ) );
srAddAcctToAdminGroup.SendLastStep( hr );
TraceFlow( "NetLocalGroupAddMembers() returned an error." );
} // else: something went wrong
} // else: the account was not already a member of the admin group.
} // if: the account has to be added to the admin group
else
{
LogMsg( "The account needs to be removed from the administrators group." );
TraceFlow( "The account needs to be removed from the administrators group." );
nasStatus = NetLocalGroupDelMembers(
NULL
, m_sszAdminGroupName.PMem()
, 0
, reinterpret_cast< LPBYTE >( &lgmiLocalGroupMemberInfo )
, 1
);
if ( nasStatus == ERROR_NO_SUCH_MEMBER )
{
LogMsg( "The account was not a member of the admin group to begin with." );
TraceFlow( "The account was not a member of the admin group to begin with." );
nasStatus = NERR_Success;
fWasAlreadyInGroup = false;
} // if: the account was not a member of the admin group.
else
{
if ( nasStatus == NERR_Success )
{
TraceFlow( "The account has been deleted from the admin group." );
fWasAlreadyInGroup = true;
} // if: everything was ok
else
{
TW32( nasStatus );
TraceFlow( "NetLocalGroupDelMembers() returned an error." );
} // else: something went wrong
} // else; the account was a member of the admin group.
} // else: the account has to be deleted from the admin group
if ( nasStatus != ERROR_SUCCESS )
{
LogMsg( "Error %#08x occurred trying to change membership in administrators group.", nasStatus );
TraceFlow1( "Error %#08x occurred trying to change membership in administrators group. Throwing exception.", nasStatus );
THROW_RUNTIME_ERROR( HRESULT_FROM_WIN32( nasStatus ), IDS_ERROR_ADMIN_GROUP_ADD_REMOVE );
} // if: something went wrong.
else
{
LogMsg( "The account was successfully added/deleted to/from the group '%s'.", m_sszAdminGroupName.PMem() );
TraceFlow1( "The account was successfully added/deleted to/from the group '%s'.", m_sszAdminGroupName.PMem() );
} // else: everything was hunky-dory
return fWasAlreadyInGroup;
} //*** CClusSvcAccountConfig::FChangeAdminGroupMembership()