Leaked source code of windows server 2003
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//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1996-1998.
//
// File: qsession.cxx
//
// Contents: Query Session. Implements ICiCQuerySession interface.
//
// Classes: CQuerySession
//
// History: 12-Dec-96 SitaramR Created
//
//----------------------------------------------------------------------------
#include <pch.cxx>
#pragma hdrstop
#include <qsession.hxx>
#include <catalog.hxx>
#include <ciprop.hxx>
#include <vrtenum.hxx>
#include <metapenm.hxx>
#include <scopeenm.hxx>
#include <defprop.hxx>
#include <dbprputl.hxx>
//+-------------------------------------------------------------------------
//
// Member: CQuerySession::CQuerySession
//
// Synopsis: Constructor
//
// Arguments: [cat] -- Catalog
// [xSecCache] -- Cache of access check results
//
// History: 12-Dec-96 SitaramR Created
//
//--------------------------------------------------------------------------
CQuerySession::CQuerySession( PCatalog & cat )
: _cat(cat),
_secCache( cat ),
_fUsePathAlias( FALSE ),
_cRefs(1)
{
}
//+-------------------------------------------------------------------------
//
// Member: CQuerySession::~CQuerySession
//
// Synopsis: Destructor
//
// History: 12-Dec-96 SitaramR Created
//
//--------------------------------------------------------------------------
CQuerySession::~CQuerySession()
{
}
//+-------------------------------------------------------------------------
//
// Method: CQuerySession::AddRef
//
// Synopsis: Increments refcount
//
// History: 12-Dec-1996 SitaramR Created
//
//--------------------------------------------------------------------------
ULONG STDMETHODCALLTYPE CQuerySession::AddRef()
{
return InterlockedIncrement( (long *)&_cRefs );
}
//+-------------------------------------------------------------------------
//
// Method: CQuerySession::Release
//
// Synopsis: Decrement refcount. Delete if necessary.
//
// History: 12-Dec-1996 SitaramR Created
//
//--------------------------------------------------------------------------
ULONG STDMETHODCALLTYPE CQuerySession::Release()
{
Win4Assert( _cRefs > 0 );
ULONG uTmp = InterlockedDecrement( (long *)&_cRefs );
if ( 0 == uTmp )
delete this;
return uTmp;
}
//+-------------------------------------------------------------------------
//
// Method: CQuerySession::QueryInterface
//
// Synopsis: Rebind to other interface
//
// Arguments: [riid] -- IID of new interface
// [ppvObject] -- New interface * returned here
//
// Returns: S_OK if bind succeeded, E_NOINTERFACE if bind failed
//
// History: 12-Dec-1996 SitaramR Created
//
//--------------------------------------------------------------------------
SCODE STDMETHODCALLTYPE CQuerySession::QueryInterface(
REFIID riid,
void ** ppvObject)
{
*ppvObject = 0;
if ( IID_ICiCQuerySession == riid )
*ppvObject = (IUnknown *)(ICiCQuerySession *)this;
else if ( IID_IUnknown == riid )
*ppvObject = (IUnknown *)this;
else
return E_NOINTERFACE;
AddRef();
return S_OK;
}
//+-------------------------------------------------------------------------
//
// Member: CQuerySession::Init
//
// Synopsis: Initializes a query session
//
// Arguments: [nProps] -- # of props in apPropSpec
// [apPropSpec] -- Properties that may be retrieved by the query
// [pDBProperties] -- Properties such as scope
// [pQueryPropMapper] -- Propspec <-> pid mapper
//
// History: 12-Dec-96 SitaramR Created
//
//--------------------------------------------------------------------------
SCODE STDMETHODCALLTYPE CQuerySession::Init( ULONG nProps,
const FULLPROPSPEC *const *apPropSpec,
IDBProperties *pDBProperties,
ICiQueryPropertyMapper *pQueryPropertyMapper)
{
SCODE sc = S_OK;
pQueryPropertyMapper->AddRef();
_xQueryPropMapper.Set( pQueryPropertyMapper );
TRY
{
//
// Form the scope, _eType and _fUsePathAlias
//
CGetDbProps dbProps;
dbProps.GetProperties( pDBProperties,
CGetDbProps::eMachine |
CGetDbProps::eScopesAndDepths |
CGetDbProps::eCatalog |
CGetDbProps::eQueryType );
WCHAR const * pwszMachine = dbProps.GetMachine();
if ( 0 == pwszMachine )
THROW( CException( E_INVALIDARG ) );
_fUsePathAlias = (L'.' != pwszMachine[0]);
//
// The registry can override a local client so paths are returned
// with the alias taken into account.
//
CCiRegParams * pRegParams = _cat.GetRegParams();
if ( 0 != pRegParams && pRegParams->GetForcePathAlias() )
_fUsePathAlias = TRUE;
_eType = dbProps.GetQueryType();
if ( CiNormal == _eType )
{
const ULONG allScp = ( QUERY_SHALLOW | QUERY_DEEP |
QUERY_PHYSICAL_PATH | QUERY_VIRTUAL_PATH );
WCHAR const * const * aScopes = dbProps.GetScopes();
DWORD const * aDepths = dbProps.GetDepths();
if ( 0 == aScopes || 0 == aDepths )
THROW( CException( E_INVALIDARG ) );
ULONG cScopes = dbProps.GetScopeCount();
ULONG cCatalogs = dbProps.GetCatalogCount();
Win4Assert( cCatalogs == 1 );
Win4Assert( cScopes > 0 );
//
// Get clean array of scopes.
//
CDynArray<WCHAR> aNormalizedScopes( cScopes );
GetNormalizedScopes(aScopes, aDepths, cScopes, cCatalogs, aNormalizedScopes);
if ( cScopes == 1 )
{
_xScope.Set( new CScopeRestriction( aNormalizedScopes.Get(0),
0 != ( aDepths[0] & QUERY_DEEP ),
0 != ( aDepths[0] & QUERY_VIRTUAL_PATH ) ) );
}
else
{
CNodeRestriction * pNodeRst = new CNodeRestriction( RTOr, cScopes );
_xScope.Set( pNodeRst );
for ( ULONG i = 0; i < cScopes; i++ )
{
if ( ( 0 != ( aDepths[i] & (~allScp) ) ) ||
( 0 == aNormalizedScopes.Get(i) ) )
THROW( CException( E_INVALIDARG ) );
XPtr<CScopeRestriction> xScope( new CScopeRestriction(
aNormalizedScopes.Get(i),
0 != ( aDepths[i] & QUERY_DEEP ),
0 != ( aDepths[i] & QUERY_VIRTUAL_PATH ) ) );
pNodeRst->AddChild( xScope.GetPointer() );
xScope.Acquire();
}
}
if ( !ValidateScopeRestriction( _xScope.GetPointer() ) )
THROW( CException( STATUS_NO_MEMORY ) );
}
else
{
// Any type of query except enumerating properties requires admin
// level access.
if ( CiProperties != _eType )
VerifyThreadHasAdminPrivilege();
// If the query type isn't known, fail the query.
if ( ( CiProperties != _eType ) &&
( CiVirtualRoots != _eType ) &&
( CiPhysicalRoots != _eType ) &&
( CiAdminOp != _eType ) )
THROW( CException( E_INVALIDARG ) );
}
}
CATCH( CException, e )
{
sc = e.GetErrorCode();
vqDebugOut(( DEB_ERROR,
"CQuerySession::Init - Exception caught 0x%x\n",
sc ));
}
END_CATCH;
return sc;
} //Init
//+-------------------------------------------------------------------------
//
// Member: CQuerySession::GetNormalizedScopes
//
// Synopsis: Validates/Normalizes scopes format
//
// Arguments: [aScopes] - pointer to array of scopes
// [aDepths] - pointer to array of depths
// [cScopes] - count of scopes
// [cCatalogs] - count of catalogs
// [aNormalizedScopes] - array of clean scopes to be returned.
//
// History: 14-May-97 mohamedn moved/merged from CQuerySpec
//
//--------------------------------------------------------------------------
void CQuerySession::GetNormalizedScopes(WCHAR const * const *aScopes,
ULONG const * aDepths,
ULONG cScopes,
ULONG cCatalogs,
CDynArray<WCHAR> & aNormalizedScopes)
{
//
// Don't allow 'current directory' opens like 'd:'. Must be 'd:\'
//
BOOL fAnyVirtual = FALSE;
for ( ULONG iScope = 0; iScope < cScopes; iScope++ )
{
unsigned len = wcslen( aScopes[ iScope ] );
// empty scopes mean "\", and they come from v5 clients
if ( 0 != len )
{
if ( ( len < 3 ) &&
( !IsVScope( aDepths[ iScope ] ) ) &&
( wcscmp( aScopes[ iScope ], L"\\" ) ) )
THROW ( CException(E_INVALIDARG) );
if ( IsVScope( aDepths[ iScope ] ) )
fAnyVirtual = TRUE;
}
}
// A catalog must be specified with virtual paths (since a virtual path
// tells you nothing about catalog location.
if ( 0 == cCatalogs && fAnyVirtual )
THROW ( CException(E_INVALIDARG) );
//
// Generate clean scopes
//
for ( ULONG i = 0; i < cScopes; i++ )
{
XArray<WCHAR> xScope;
CleanupScope( xScope,
aDepths[i],
aScopes[i] );
aNormalizedScopes.Add( xScope.Get(), i );
xScope.Acquire();
}
} //GetNormalizedScopes
//+-------------------------------------------------------------------------
//
// Function: CQuerySession::CleanupScope, public
//
// Synopsis: Makes sure a scope is well-formed
//
// Arguments: [xScope] -- Returns a cleaned-up scope
// [dwDepth] -- Scope flags: deep/virtual
// [pwcScope] -- Scope as specified by the user
//
// History: 1-Nov-96 dlee Moved Kyle's code from EvalQuery
//
//--------------------------------------------------------------------------
void CQuerySession::CleanupScope( XArray<WCHAR> & xScope,
DWORD dwDepth,
WCHAR const * pwcScope )
{
// A non-slash terminated path to root is illegal. A slash
// terminated path to a directory other than the root is
// illegal. Sigh.
Win4Assert( 0 != pwcScope );
XGrowable<WCHAR> xTempScope;
WCHAR const * pwcFinalScope = 0;
if ( ( 0 == *pwcScope ) ||
( !_wcsicmp( L"catalog", pwcScope ) ) ||
( !wcscmp( L"\\", pwcScope ) ) )
{
pwcFinalScope = L"";
}
else if ( IsVScope( dwDepth ) )
{
pwcFinalScope = pwcScope;
}
else
{
int len = wcslen( pwcScope );
BOOL fEndsInSlash = (pwcScope[len-1] == L'\\');
BOOL fIsRoot;
if ( len == 3 )
fIsRoot = TRUE;
else if ( pwcScope[0] == L'\\' && pwcScope[1] == L'\\' )
{
unsigned cSlash = 2;
for ( unsigned i = 2; pwcScope[i] != 0; i++ )
{
if ( pwcScope[i] == L'\\' )
{
cSlash++;
if ( cSlash > 4 )
break;
}
}
if ( cSlash > 4 )
fIsRoot = FALSE;
else if ( cSlash == 4 && !fEndsInSlash )
fIsRoot = FALSE;
else
fIsRoot = TRUE;
}
else
fIsRoot = FALSE;
if ( fIsRoot )
{
if ( !fEndsInSlash )
{
xTempScope.SetSize( len + 1 + 1 );
memcpy( xTempScope.Get(), pwcScope, len * sizeof WCHAR );
xTempScope[len] = L'\\';
len++;
xTempScope[len] = 0;
pwcFinalScope = xTempScope.Get();
}
else
pwcFinalScope = pwcScope;
}
else
{
if ( fEndsInSlash )
{
xTempScope.SetSize( len );
memcpy( xTempScope.Get(), pwcScope, (len-1)*sizeof(WCHAR) );
xTempScope[len - 1] = 0;
pwcFinalScope = xTempScope.Get();
}
else
pwcFinalScope = pwcScope;
}
}
Win4Assert( 0 != pwcFinalScope );
int len = wcslen( pwcFinalScope );
xScope.Init( 1 + len );
RtlCopyMemory( xScope.GetPointer(), pwcFinalScope, xScope.SizeOf() );
} //CleanupScope
//+-------------------------------------------------------------------------
//
// Member: CQuerySession::GetEnumOption
//
// Synopsis: Specify the enumeration type
//
// Arguments: [pEnumOption] -- Enumeration option returned here
//
// History: 12-Dec-96 SitaramR Created
//
//--------------------------------------------------------------------------
SCODE STDMETHODCALLTYPE CQuerySession::GetEnumOption( CI_ENUM_OPTIONS *pEnumOption)
{
SCODE sc = S_OK;
TRY
{
Win4Assert( pEnumOption != 0 );
switch ( _eType )
{
case CiProperties: // Fall thru
case CiVirtualRoots:
*pEnumOption = CI_ENUM_MUST_NEVER_DEFER;
break;
case CiPhysicalRoots:
Win4Assert( !"Not implemented");
vqDebugOut(( DEB_ERROR,
"CQuerySession::GetEnumOption - CiPhysicalRoots not implemented\n" ));
sc = E_NOTIMPL;
break;
case CiNormal:
if ( IsAnyScopeDeep() )
*pEnumOption = CI_ENUM_BIG;
else
*pEnumOption = CI_ENUM_SMALL;
break;
default:
Win4Assert( !"Unknown value of case selector");
vqDebugOut(( DEB_ERROR,
"CQuerySession::GetEnumOption - Unknown case selector: %d\n",
_eType ));
sc = E_FAIL;
break;
}
}
CATCH( CException, e )
{
sc = e.GetErrorCode();
vqDebugOut(( DEB_ERROR,
"CQuerySession::GetEnumOption - Exception caught 0x%x\n",
sc ));
}
END_CATCH;
return sc;
} //GetEnumOption
//+-------------------------------------------------------------------------
//
// Member: CQuerySession::CreatePropRetriever
//
// Synopsis: Creates property retriever object for the given scope
//
// Arguments: [ppICiCPropRetreiver] -- Property retriever returned here
//
// History: 12-Dec-96 SitaramR Created
//
//--------------------------------------------------------------------------
SCODE STDMETHODCALLTYPE CQuerySession::CreatePropRetriever( ICiCPropRetriever **ppICiCPropRetriever)
{
SCODE sc = S_OK;
TRY
{
CCiPropRetriever *pPropRetriever = new CCiPropRetriever( _cat,
_xQueryPropMapper.GetPointer(),
_secCache,
_fUsePathAlias,
_xScope.GetPointer() );
SCODE sc = pPropRetriever->QueryInterface( IID_ICiCPropRetriever,
(void **) ppICiCPropRetriever );
//
// Either QI does an AddRef, or if failed free pPropRetriever
//
pPropRetriever->Release();
#if CIDBG == 1
if ( FAILED(sc) )
vqDebugOut(( DEB_ERROR,
"CQuerySession::CreatePropRetriever : QI failed 0x%x\n",
sc ));
#endif
}
CATCH( CException, e )
{
sc = e.GetErrorCode();
vqDebugOut(( DEB_ERROR,
"CQuerySession::CreatePropRetriever - Exception caught 0x%x\n",
sc ));
}
END_CATCH;
return sc;
}
//+-------------------------------------------------------------------------
//
// Member: CQuerySession::CreateDeferredPropRetriever
//
// Synopsis: Creates a deferred property retriever object for the given scope
//
// Arguments: [ppICiCDefPropRetreiver] -- Deferred property retriever returned here
//
// History: 12-Jan-97 SitaramR Created
//
//--------------------------------------------------------------------------
SCODE STDMETHODCALLTYPE CQuerySession::CreateDeferredPropRetriever(
ICiCDeferredPropRetriever **ppICiCDefPropRetriever)
{
SCODE sc = S_OK;
TRY
{
CCiCDeferredPropRetriever *pDefPropRetriever = new CCiCDeferredPropRetriever(
_cat,
_secCache,
_fUsePathAlias );
SCODE sc = pDefPropRetriever->QueryInterface( IID_ICiCDeferredPropRetriever,
(void **) ppICiCDefPropRetriever );
//
// Either QI does an AddRef, or if failed free pDefPropRetriever
//
pDefPropRetriever->Release();
#if CIDBG == 1
if ( FAILED(sc) )
vqDebugOut(( DEB_ERROR,
"CQuerySession::CreateDeferredPropRetriever : QI failed 0x%x\n",
sc ));
#endif
}
CATCH( CException, e )
{
sc = e.GetErrorCode();
vqDebugOut(( DEB_ERROR,
"CQuerySession::CreateDeferredPropRetriever - Exception caught 0x%x\n",
sc ));
}
END_CATCH;
return sc;
}
//+-------------------------------------------------------------------------
//
// Member: CQuerySession::CreateEnumerator
//
// Synopsis: Creates scope retriever object for the given scope
//
// Arguments: [ppICiCScopeEnumerator] -- Enumerator object returned here
//
// History: 12-Dec-96 SitaramR Created
//
//--------------------------------------------------------------------------
SCODE STDMETHODCALLTYPE CQuerySession::CreateEnumerator( ICiCScopeEnumerator **ppICiCScopeEnumerator)
{
SCODE sc = S_OK;
TRY
{
switch ( _eType )
{
case CiNormal:
{
CScopeEnum *pScopeEnum = new CScopeEnum( _cat,
_xQueryPropMapper.GetPointer(),
_secCache,
_fUsePathAlias,
_xScope.GetReference() );
SCODE sc = pScopeEnum->QueryInterface( IID_ICiCScopeEnumerator,
(void **) ppICiCScopeEnumerator );
//
// Either QI does an AddRef, or if failed free pScopeEnum
//
pScopeEnum->Release();
break;
}
case CiVirtualRoots:
{
CVRootEnum *pVRootEnum = new CVRootEnum( _cat,
_xQueryPropMapper.GetPointer(),
_secCache,
_fUsePathAlias );
SCODE sc = pVRootEnum->QueryInterface( IID_ICiCScopeEnumerator,
(void **) ppICiCScopeEnumerator );
//
// Either QI does an AddRef, or if failed free pVRootEnum
//
pVRootEnum->Release();
break;
}
case CiProperties:
{
CMetaPropEnum *pMetaPropEnum = new CMetaPropEnum( _cat,
_xQueryPropMapper.GetPointer(),
_secCache,
_fUsePathAlias );
SCODE sc = pMetaPropEnum->QueryInterface( IID_ICiCScopeEnumerator,
(void **) ppICiCScopeEnumerator );
//
// Either QI does an AddRef, or if failed free pMetaPropEnum
//
pMetaPropEnum->Release();
break;
}
default:
*ppICiCScopeEnumerator = 0;
Win4Assert( !"Unknown value of case selector");
vqDebugOut(( DEB_ERROR,
"CQuerySession::CreateEnumerator - Unknown case selector: %d\n",
_eType ));
sc = E_FAIL;
break;
}
}
CATCH( CException, e )
{
sc = e.GetErrorCode();
vqDebugOut(( DEB_ERROR, "CQuerySession::CreateEnumerator - Exception caught 0x%x\n", sc ));
}
END_CATCH;
#if CIDBG == 1
if ( FAILED(sc) )
vqDebugOut(( DEB_ERROR, "CQuerySession::CreateEnumerator : QI failed 0x%x\n", sc ));
#endif
return sc;
}
//+-------------------------------------------------------------------------
//
// Member: CQuerySession::IsAnyScopeDeep
//
// Synopsis: Returns is any of the scopes is deep
//
// History: 12-Dec-96 DLee Created
//
//--------------------------------------------------------------------------
BOOL CQuerySession::IsAnyScopeDeep() const
{
if ( 0 == &(_xScope.GetReference()) )
return FALSE;
if ( RTScope == _xScope->Type() )
{
CScopeRestriction const & scp = (CScopeRestriction const &) _xScope.GetReference();
return scp.IsDeep();
}
else if ( RTOr == _xScope->Type() )
{
CNodeRestriction const & node = * _xScope->CastToNode();
for ( ULONG x = 0; x < node.Count(); x++ )
{
Win4Assert( RTScope == node.GetChild( x )->Type() );
CScopeRestriction & scp = * (CScopeRestriction *) node.GetChild( x );
if ( scp.IsDeep() )
return TRUE;
}
}
return FALSE;
}