//+-----------------------------------------------------------------------
//
// Microsoft Windows
//
// Copyright (c) Microsoft Corporation 1992 - 1996
//
// File:        tktcache.h
//
// Contents:    Prototypes and types for ticket cache
//
//
// History:     16-April-1996   Created         MikeSw
//
//------------------------------------------------------------------------

#ifndef __TKTCACHE_H__
#define __TKTCACHE_H__

//
// All global variables declared as EXTERN will be allocated in the file
// that defines TKTCACHE_ALLOCATE
//

#ifdef EXTERN
#undef EXTERN
#endif

#ifdef TKTCACHE_ALLOCATE
#define EXTERN
#else
#define EXTERN extern
#endif

#ifdef WIN32_CHICAGO
EXTERN CRITICAL_SECTION KerberosTicketCacheLock;
#else // WIN32_CHICAGO
EXTERN SAFE_RESOURCE KerberosTicketCacheLock;
#endif // WIN32_CHICAGO
EXTERN BOOLEAN KerberosTicketCacheInitialized;
EXTERN LONG KerbTicketCacheHits;
EXTERN LONG KerbTicketCacheMisses;

#define KERB_TICKET_CACHE_PRIMARY_TGT           0x01             // ticket is primary TGT
#define KERB_TICKET_CACHE_DELEGATION_TGT        0x02             // ticket is delegation TGT
#define KERB_TICKET_CACHE_S4U_TICKET            0x04             // ticket is an S4U ticket
#define KERB_TICKET_CACHE_ASC_TICKET            0x08             // ticket is from AcceptSecurityContext
#define KERB_TICKET_CACHE_TKT_ENC_IN_SKEY       0x10             // ticket is encrypted with a session key


                                                    

#ifdef WIN32_CHICAGO
#define KerbWriteLockTicketCache() (EnterCriticalSection(&KerberosTicketCacheLock));g_lpLastLock = THIS_FILE;g_uLine = __LINE__
#define KerbReadLockTicketCache() (EnterCriticalSection(&KerberosTicketCacheLock));g_lpLastLock = THIS_FILE;g_uLine = __LINE__
#define KerbUnlockTicketCache() (LeaveCriticalSection(&KerberosTicketCacheLock));g_lpLastLock = NULL;g_uLine = 0
#else // WIN32_CHICAGO
#define KerbWriteLockTicketCache() (SafeAcquireResourceExclusive(&KerberosTicketCacheLock,TRUE));g_lpLastLock = THIS_FILE;g_uLine = __LINE__
#define KerbReadLockTicketCache() (SafeAcquireResourceShared(&KerberosTicketCacheLock, TRUE));g_lpLastLock = THIS_FILE;g_uLine = __LINE__
#define KerbUnlockTicketCache() (SafeReleaseResource(&KerberosTicketCacheLock));g_lpLastLock = NULL;g_uLine = 0
#endif // WIN32_CHICAGO

VOID
KerbReferenceTicketCacheEntry(
    IN PKERB_TICKET_CACHE_ENTRY TicketCacheEntry
    );

VOID
KerbDereferenceTicketCacheEntry(
    IN PKERB_TICKET_CACHE_ENTRY TicketCacheEntry
    );

NTSTATUS
KerbInitTicketCaching(
    VOID
    );

VOID
KerbAgeTickets( 
    IN PKERB_TICKET_CACHE TicketCache
    );

VOID
KerbFreeTicketCache(
    VOID
    );

NTSTATUS
KerbCreateTicketCacheEntry(
    IN PKERB_KDC_REPLY KdcReply,
    IN PKERB_ENCRYPTED_KDC_REPLY KdcReplyBody,
    IN OPTIONAL PKERB_INTERNAL_NAME TargetName,
    IN OPTIONAL PUNICODE_STRING TargetRealm,
    IN ULONG Flags,
    IN OPTIONAL PKERB_TICKET_CACHE TicketCache,
    IN OPTIONAL PKERB_ENCRYPTION_KEY CredentialKey,
    OUT PKERB_TICKET_CACHE_ENTRY * NewCacheEntry
    );

NTSTATUS
KerbDuplicateTicketCacheEntry(
    IN PKERB_TICKET_CACHE_ENTRY CacheEntry,
    IN OUT PKERB_TICKET_CACHE_ENTRY * NewCacheEntry
    );

VOID
KerbPurgeTicketCache(
    IN PKERB_TICKET_CACHE Cache
    );

VOID
KerbInitTicketCache(
    IN PKERB_TICKET_CACHE TicketCache
    );

PKERB_TICKET_CACHE_ENTRY
KerbLocateTicketCacheEntry(
    IN PKERB_TICKET_CACHE TicketCache,
    IN PKERB_INTERNAL_NAME FullServiceName,
    IN PUNICODE_STRING RealmName
    );

PKERB_TICKET_CACHE_ENTRY
KerbLocateTicketCacheEntryByRealm(
    IN PKERB_TICKET_CACHE TicketCache,
    IN PUNICODE_STRING RealmName,
    IN ULONG RequiredFlags
    );


VOID
KerbInsertTicketCacheEntry(
    IN PKERB_TICKET_CACHE TicketCache,
    IN PKERB_TICKET_CACHE_ENTRY TicketCacheEntry
    );

VOID
KerbRemoveTicketCacheEntry(
    IN PKERB_TICKET_CACHE_ENTRY TicketCacheEntry
    );

BOOLEAN
KerbTicketIsExpiring(
    IN PKERB_TICKET_CACHE_ENTRY CacheEntry,
    IN BOOLEAN AllowSkew
    );

VOID
KerbSetTicketCacheEntryTarget(
    IN PUNICODE_STRING TargetName,
    IN PKERB_TICKET_CACHE_ENTRY TicketCacheEntry
    );

VOID
KerbScheduleTgtRenewal(
    IN KERB_TICKET_CACHE_ENTRY * CacheEntry
    );


void
KerbTicketScavenger(
    void * TaskHandle,
    void * TaskItem
    );

#endif // __TKTCACHE_H__