227 lines
7.4 KiB
C++
227 lines
7.4 KiB
C++
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/**********************************************************************/
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/** Microsoft LAN Manager **/
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/** Copyright(c) Microsoft Corp., 1991 **/
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/**********************************************************************/
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/*
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* lmodom.hxx
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*
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* History
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* RustanL 08-Jan-1991 Created
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* rustanl 06-Mar-1991 Changed PSZ to const TCHAR * in ct
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* chuckc 7/3/91 Code review changes (from 2/28,
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* rustanl, chuckc, johnl, jonshu, annmc)
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* rustanl 23-Mar-1991 Added IsLANServerDomain
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* rustanl 08-Apr-1991 Cache domain name for domains with
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* no DC.
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* terryk 07-Oct-1991 type changes for NT
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*
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* CongpaY 18-Aug-1992 Add fBackupDCsOK
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* KeithMo 31-Aug-1992 Added ctor form with server name.
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* JonN 13-May-1998 Added SPECIAL CAUTION
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*
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* SPECIAL CAUTION In the NETBIOSless environment of NT5, there are some limitations with
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* SPECIAL CAUTION the variations of the constructor which take the pszServer parameter
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* SPECIAL CAUTION and fBackupDCIsOK==TRUE.
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* SPECIAL CAUTION
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* SPECIAL CAUTION Please read this carefully, and be sure you understand it, before adding or
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* SPECIAL CAUTION modifying such code! Contact JonN or CliffV with any questions.
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* SPECIAL CAUTION
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* SPECIAL CAUTION When you specify a target server and also fBackupDCIsOK==TRUE,
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* SPECIAL CAUTION DOMAIN will call NetGetAnyDCName with the target server parameter set.
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* SPECIAL CAUTION This will return a DC in the target domain which shares some
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* SPECIAL CAUTION network transport with pszServer. However, that server may not share
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* SPECIAL CAUTION any network parameters with your local machine! If you use the
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* SPECIAL CAUTION GetAnyValidDC variant, then the validation will fail and you will
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* SPECIAL CAUTION fall back to I_NetGetDCList. However, if you use just GetAnyDC,
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* SPECIAL CAUTION you are liable to wind up with a DC which really exists but
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* SPECIAL CAUTION does not share any transports with your local machine.
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* SPECIAL CAUTION JonN 5/13/98
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*
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*/
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#ifndef _LMODOM_HXX_
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#define _LMODOM_HXX_
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#include "lmobj.hxx"
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/**********************************************************\
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NAME: DOMAIN
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WORKBOOK:
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SYNOPSIS: domain class in lan manager object collection
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INTERFACE:
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DOMAIN() - constructor
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~DOMAIN() - destructor
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QueryName() - query name
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GetInfo() - get information
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WriteInfo() - write information
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QueryPDC() - query pdc
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PARENT: LM_OBJ
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USES:
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CAVEATS: If fBackupDCsOK = TRUE, QueryPDC() may return BDC.
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NOTES:
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HISTORY:
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\**********************************************************/
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DLL_CLASS DOMAIN : public LM_OBJ
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{
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private:
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VOID CtAux( const TCHAR * pszServer,
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const TCHAR * pszDomain );
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protected:
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/*
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* we allow extra bytes in _szDomain to allow us to store illegal
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* names (at least part of). This is for the benefit of validation
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* at after construction. If we cannot store an invalid name, we
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* cannot validate after construction. (2 bytes for DBCS worst case)
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*/
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TCHAR _szDomain[DNLEN+3];
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TCHAR _szDC[MAX_PATH];
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TCHAR _szServer[MAX_PATH+3];
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BOOL _fBackupDCsOK;
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virtual APIERR ValidateName(VOID);
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static APIERR GetAnyDCWorker(const TCHAR * pszServer,
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const TCHAR * pszDomain,
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NLS_STR * pnlsDC,
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BOOL fValidate);
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public:
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DOMAIN( const TCHAR * pchDomain, BOOL fBackupDCsOK = FALSE );
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DOMAIN( const TCHAR * pszServer, // see SPECIAL CAUTION above
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const TCHAR * pszDomain,
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BOOL fBackupDCsOK = FALSE );
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~DOMAIN();
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const TCHAR *QueryName( VOID ) const;
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APIERR GetInfo( VOID );
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APIERR WriteInfo( VOID );
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const TCHAR * QueryPDC( VOID ) const;
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const TCHAR * QueryAnyDC( VOID ) const;
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static APIERR GetAnyValidDC(const TCHAR * pszServer,
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const TCHAR * pszDomain,
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NLS_STR * pnlsDC); // see SPECIAL CAUTION above
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static APIERR GetAnyDC(const TCHAR * pszServer,
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const TCHAR * pszDomain,
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NLS_STR * pnlsDC); // see SPECIAL CAUTION above
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static BOOL IsValidDC( const TCHAR * pszServer,
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const TCHAR * pszDomain );
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}; // class DOMAIN
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/**********************************************************\
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NAME: DC_CACHE_ENTRY
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SYNOPSIS: structure for keeping cached DCs
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USES:
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NOTES:
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HISTORY: 9/30/92 chuckc created.
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\**********************************************************/
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typedef struct _DC_CACHE_ENTRY {
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TCHAR szDomain[DNLEN+1] ;
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TCHAR szServer[MAX_PATH+1] ;
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DWORD dwTickCount ;
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} DC_CACHE_ENTRY ;
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/**********************************************************\
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NAME: DOMAIN_WITH_DC_CACHE
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WORKBOOK:
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SYNOPSIS: as DOMAIN, except that it uses cached DC info.
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INTERFACE: as parent
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PARENT: DOMAIN
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USES:
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CAVEATS: If fBackupDCsOK = TRUE, QueryPDC() may return BDC.
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NOTES:
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HISTORY:
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\**********************************************************/
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DLL_CLASS DOMAIN_WITH_DC_CACHE : public DOMAIN
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{
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public:
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DOMAIN_WITH_DC_CACHE( const TCHAR * pchDomain, BOOL fBackupDCsOK = FALSE );
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DOMAIN_WITH_DC_CACHE( const TCHAR * pszServer, // see SPECIAL CAUTION above
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const TCHAR * pszDomain,
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BOOL fBackupDCsOK = FALSE );
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~DOMAIN_WITH_DC_CACHE();
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APIERR GetInfo( VOID );
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static APIERR GetAnyDC(const TCHAR * pszServer,
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const TCHAR * pszDomain,
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NLS_STR * pnlsDC); // see SPECIAL CAUTION above
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static APIERR GetAnyValidDC(const TCHAR * pszServer,
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const TCHAR * pszDomain,
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NLS_STR * pnlsDC); // see SPECIAL CAUTION above
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protected:
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static APIERR GetAnyDCWorker(const TCHAR * pszServer,
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const TCHAR * pszDomain,
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NLS_STR * pnlsDC,
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BOOL fValidate);
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private:
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// static members that have the pointers to the cache tables
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static DC_CACHE_ENTRY *_pAnyDcCacheTable ;
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static DC_CACHE_ENTRY *_pPrimaryDcCacheTable ;
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static HANDLE _hCacheSema4 ;
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//
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// methods to manipulate the caches
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//
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// Note that they should not call each other (get hung up on the semaphore
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// protection)
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//
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static const TCHAR *FindDcCache(const DC_CACHE_ENTRY *pDcCacheEntry,
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const TCHAR *pszDomain) ;
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static APIERR AddDcCache(DC_CACHE_ENTRY **ppDcCacheEntry,
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const TCHAR *pszDomain,
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const TCHAR *pszDC) ;
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//
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// These two methods must be called under semaphore protection
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//
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static APIERR ClearDcCache(DC_CACHE_ENTRY *pDcCacheEntry) ;
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//static APIERR FreeDcCache(DC_CACHE_ENTRY **ppDcCacheEntry) ; // Not used
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static APIERR EnterCriticalSection( void ) ;
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static void LeaveCriticalSection( void ) ;
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}; // class DOMAIN_WITH_DC_CACHE
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#endif // _LMODOM_HXX_
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