148 lines
3.7 KiB
C
148 lines
3.7 KiB
C
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//+-----------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (c) Microsoft Corporation 1992 - 1996
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//
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// File: ctxtmgr.h
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//
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// Contents: Structures and prototyps for Kerberos context list
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//
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//
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// History: 17-April-1996 Created MikeSw
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//
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//------------------------------------------------------------------------
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#ifndef __CTXTMGR_H__
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#define __CTXTMGR_H__
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//
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// All global variables declared as EXTERN will be allocated in the file
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// that defines CTXTMGR_ALLOCATE
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//
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#ifdef EXTERN
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#undef EXTERN
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#endif
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#ifdef CTXTMGR_ALLOCATE
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#define EXTERN
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#else
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#define EXTERN extern
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#endif
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EXTERN ERESOURCE KerbContextResource;
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EXTERN KERBEROS_LIST KerbContextList;
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EXTERN BOOLEAN KerberosContextsInitialized;
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#define KerbGetContextHandle(_Context_) ((ULONG_PTR)(_Context_))
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//
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// Context flags - these are attributes of a context and are stored in
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// the ContextAttributes field of a KERB_KERNEL_CONTEXT.
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//
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#define KERB_CONTEXT_MAPPED 0x1
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#define KERB_CONTEXT_OUTBOUND 0x2
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#define KERB_CONTEXT_INBOUND 0x4
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#define KERB_CONTEXT_USER_TO_USER 0x10
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#define KERB_CONTEXT_IMPORTED 0x80
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#define KERB_CONTEXT_EXPORTED 0x100
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//
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// NOTICE: The logon session resource, credential resource, and context
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// resource must all be acquired carefully to prevent deadlock. They
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// can only be acquired in this order:
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//
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// 1. Logon Sessions
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// 2. Credentials
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// 3. Contexts
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//
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#define KerbWriteLockContexts() \
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{ \
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if ( KerbPoolType == PagedPool ) \
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{ \
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DebugLog((DEB_TRACE_LOCKS,"Write locking Contexts\n")); \
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KeEnterCriticalRegion(); \
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ExAcquireResourceExclusiveLite(&KerbContextResource,TRUE); \
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} \
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}
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#define KerbReadLockContexts() \
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{ \
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if ( KerbPoolType == PagedPool ) \
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{ \
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DebugLog((DEB_TRACE_LOCKS,"Read locking Contexts\n")); \
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KeEnterCriticalRegion(); \
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ExAcquireSharedWaitForExclusive(&KerbContextResource, TRUE); \
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} \
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}
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#define KerbUnlockContexts() \
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{ \
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if ( KerbPoolType == PagedPool ) \
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{ \
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DebugLog((DEB_TRACE_LOCKS,"Unlocking Contexts\n")); \
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ExReleaseResourceLite(&KerbContextResource); \
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KeLeaveCriticalRegion(); \
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} \
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}
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NTSTATUS
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KerbInitContextList(
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VOID
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);
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VOID
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KerbFreeContextList(
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VOID
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);
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NTSTATUS
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KerbAllocateContext(
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PKERB_KERNEL_CONTEXT * NewContext
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);
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NTSTATUS
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KerbInsertContext(
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IN PKERB_KERNEL_CONTEXT Context
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);
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PKERB_KERNEL_CONTEXT
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KerbReferenceContext(
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IN LSA_SEC_HANDLE ContextHandle,
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IN BOOLEAN RemoveFromList
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);
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VOID
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KerbDereferenceContext(
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IN PKERB_KERNEL_CONTEXT Context
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);
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VOID
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KerbReferenceContextByPointer(
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IN PKERB_KERNEL_CONTEXT Context,
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IN BOOLEAN RemoveFromList
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);
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PKERB_KERNEL_CONTEXT
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KerbReferenceContextByLsaHandle(
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IN LSA_SEC_HANDLE ContextHandle,
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IN BOOLEAN RemoveFromList
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);
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NTSTATUS
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KerbCreateKernelModeContext(
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IN LSA_SEC_HANDLE ContextHandle,
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IN PSecBuffer MarshalledContext,
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OUT PKERB_KERNEL_CONTEXT * NewContext
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);
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#endif // __CTXTMGR_H__
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