174 lines
3.7 KiB
C
174 lines
3.7 KiB
C
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows NT Security
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// Copyright (C) Microsoft Corporation, 1997 - 1999
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//
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// File: catcache.h
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//
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// Contents: Catalog Cache for performance improvement to verification path
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//
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// History: 26-May-98 kirtd Created
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//
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//----------------------------------------------------------------------------
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#if !defined(__CATCACHE_H__)
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#define __CATCACHE_H__
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//
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// This caches state data for catalog member verification indexed by the file
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// path to the catalog. This relieves the caller from having to user the
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// icky WTD_STATEACTION* stuff in order to achieve the same ends. Someday,
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// we will just re-design/re-implement the WVT and Catalog stuff and life
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// will be good.
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//
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#include <lrucache.h>
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#define DEFAULT_CATALOG_CACHE_BUCKETS 3
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#define DEFAULT_CATALOG_CACHE_MAX_ENTRIES 3
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typedef struct _CATALOG_CACHED_STATE {
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HANDLE hStateData;
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HLRUENTRY hEntry;
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} CATALOG_CACHED_STATE, *PCATALOG_CACHED_STATE;
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class CCatalogCache
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{
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public:
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//
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// Construction
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//
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inline CCatalogCache ();
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inline ~CCatalogCache ();
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//
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// Initialization
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//
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BOOL Initialize ();
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VOID Uninitialize ();
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//
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// Cache locking
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//
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inline VOID LockCache ();
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inline VOID UnlockCache ();
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//
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// Cached State management
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//
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BOOL IsCacheableWintrustCall (WINTRUST_DATA* pWintrustData);
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VOID AdjustWintrustDataToCachedState (
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WINTRUST_DATA* pWintrustData,
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PCATALOG_CACHED_STATE pCachedState,
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BOOL fUndoAdjustment
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);
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BOOL CreateCachedStateFromWintrustData (
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WINTRUST_DATA* pWintrustData,
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PCATALOG_CACHED_STATE* ppCachedState
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);
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VOID ReleaseCachedState (PCATALOG_CACHED_STATE pCachedState);
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VOID AddCachedState (PCATALOG_CACHED_STATE pCachedState);
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VOID RemoveCachedState (PCATALOG_CACHED_STATE pCachedState);
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VOID RemoveCachedState (WINTRUST_DATA* pWintrustData);
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VOID FlushCache ();
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//
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// Cached State lookup
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//
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PCATALOG_CACHED_STATE FindCachedState (WINTRUST_DATA* pWintrustData);
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private:
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//
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// Lock
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//
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CRITICAL_SECTION m_Lock;
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//
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// Cache
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//
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HLRUCACHE m_hCache;
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};
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//
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// Entry data free function
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//
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VOID WINAPI
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CatalogCacheFreeEntryData (LPVOID pvData);
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DWORD WINAPI
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CatalogCacheHashIdentifier (PCRYPT_DATA_BLOB pIdentifier);
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//
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// Inline methods
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//
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//+---------------------------------------------------------------------------
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//
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// Member: CCatalogCache::CCatalogCache, public
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//
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// Synopsis: Constructor
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//
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//----------------------------------------------------------------------------
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inline
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CCatalogCache::CCatalogCache ()
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{
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CCatalogCache::~CCatalogCache, public
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//
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// Synopsis: Destructor
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//
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//----------------------------------------------------------------------------
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inline
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CCatalogCache::~CCatalogCache ()
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{
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CCatalogCache::LockCache, public
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//
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// Synopsis: lock the cache
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//
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//----------------------------------------------------------------------------
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inline VOID
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CCatalogCache::LockCache ()
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{
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EnterCriticalSection( &m_Lock );
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CCatalogCache::UnlockCache, public
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//
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// Synopsis: unlock the cache
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//
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//----------------------------------------------------------------------------
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inline VOID
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CCatalogCache::UnlockCache ()
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{
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LeaveCriticalSection( &m_Lock );
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}
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#endif
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