150 lines
2.8 KiB
C++
150 lines
2.8 KiB
C++
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/*++
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Copyright (c) 1995-1996 Microsoft Corporation
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Module Name:
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ipaccess.hxx
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Abstract:
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This module provides definitions of the IPAccess check object
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Author:
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Murali R. Krishnan ( MuraliK ) 18-March-1996
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Environment:
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User-Mode - Win32
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Project:
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Internet Server DLL
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Revision History:
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--*/
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# ifndef _IPACCESS_HXX_
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# define _IPACCESS_HXX_
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/************************************************************
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* Include Headers
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************************************************************/
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# include "tsres.hxx"
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#define SIZEOF_INETA_IP_SEC_LIST( IPList ) \
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( sizeof(INET_INFO_IP_SEC_LIST) + \
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(IPList)->cEntries * \
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sizeof(INET_INFO_IP_SEC_ENTRY) \
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)
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/************************************************************
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* Type Definitions
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************************************************************/
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class IPAccessList {
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public:
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dllexp
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IPAccessList(VOID)
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: m_pIPList ( NULL),
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m_cReadLocks ( 0),
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m_tsLock ()
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{ }
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dllexp
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~IPAccessList(VOID)
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{ Cleanup(); }
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dllexp VOID
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Cleanup(VOID);
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//
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// Data access protection methods
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//
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dllexp VOID
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LockThisForRead( VOID )
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{
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m_tsLock.Lock( TSRES_LOCK_READ );
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ASSERT( InterlockedIncrement( &m_cReadLocks ) > 0);
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}
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dllexp VOID
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LockThisForWrite( VOID )
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{
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m_tsLock.Lock( TSRES_LOCK_WRITE );
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ASSERT( m_cReadLocks == 0);
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}
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dllexp VOID
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UnlockThis( VOID )
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{
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#if DBG
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if ( m_cReadLocks ) // If non-zero, then this is a read unlock
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InterlockedDecrement( &m_cReadLocks );
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#endif
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m_tsLock.Unlock();
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}
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dllexp BOOL
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IsEmpty(VOID) const
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{ return ( m_pIPList == NULL); }
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dllexp BOOL
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ReadIPList(IN LPCSTR pszRegKey);
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dllexp BOOL
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IsPresent(IN LPSOCKADDR_IN psockAddr);
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dllexp DWORD
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QueryIPListSize(VOID) const
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{ return ( (m_pIPList != NULL) ?
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SIZEOF_INETA_IP_SEC_LIST( m_pIPList)
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: 0);
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}
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dllexp VOID
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CopyIPList(OUT LPINETA_IP_SEC_LIST pList)
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{
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LockThisForRead();
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if ( m_pIPList != NULL) {
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memcpy( pList, m_pIPList, SIZEOF_INETA_IP_SEC_LIST(m_pIPList));
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}
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UnlockThis();
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}
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# if DBG
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dllexp VOID
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Print( IN LPCSTR pszListName) const;
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# endif // DBG
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private:
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TS_RESOURCE m_tsLock; // Resource lock for IP access check
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LONG m_cReadLocks; // # of readers
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INETA_IP_SEC_LIST * m_pIPList; // security list
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}; // class IPAccessList
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# endif // _IPACCESS_HXX_
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/************************ End of File ***********************/
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