145 lines
2.7 KiB
C
145 lines
2.7 KiB
C
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1997.
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//
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// File: userctxt.c
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//
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// Contents:
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//
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// Classes:
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//
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// Functions:
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//
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// History: 3-26-97 RichardW Created
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//
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//----------------------------------------------------------------------------
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#include "xtcbpkg.h"
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LIST_ENTRY XtcbContextList ;
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CRITICAL_SECTION XtcbContextListLock ;
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#define LockContextList() EnterCriticalSection( &XtcbContextListLock )
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#define UnlockContextList() LeaveCriticalSection( &XtcbContextListLock )
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BOOL
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XtcbUserContextInit(
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VOID
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)
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{
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InitializeListHead( &XtcbContextList );
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InitializeCriticalSection( &XtcbContextListLock );
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return TRUE ;
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}
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SECURITY_STATUS
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XtcbAddUserContext(
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IN LSA_SEC_HANDLE LsaHandle,
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IN PSecBuffer ContextData)
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{
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DWORD Size;
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PXTCB_USER_CONTEXT Context ;
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Context = XtcbFindUserContext( LsaHandle );
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if ( Context )
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{
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DebugLog(( DEB_TRACE, "Replacing existing context!\n" ));
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}
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if ( ContextData->cbBuffer < sizeof( XTCB_CONTEXT_CORE ) )
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{
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return( SEC_E_INVALID_TOKEN );
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}
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Size = sizeof( XTCB_CONTEXT_CORE );
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Context = LocalAlloc( LMEM_FIXED | LMEM_ZEROINIT,
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sizeof( XTCB_USER_CONTEXT ) + Size );
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if ( !Context )
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{
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return( SEC_E_INSUFFICIENT_MEMORY );
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}
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Context->LsaHandle = LsaHandle ;
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CopyMemory( &Context->Context,
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ContextData->pvBuffer,
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ContextData->cbBuffer );
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LockContextList();
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InsertTailList( &XtcbContextList, &Context->List );
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UnlockContextList();
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return( SEC_E_OK );
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}
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PXTCB_USER_CONTEXT
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XtcbFindUserContext(
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IN LSA_SEC_HANDLE LsaHandle
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)
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{
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PLIST_ENTRY List ;
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PXTCB_USER_CONTEXT Context = NULL ;
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LockContextList();
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List = XtcbContextList.Flink ;
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while ( List != &XtcbContextList )
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{
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Context = CONTAINING_RECORD( List, XTCB_USER_CONTEXT, List.Flink );
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if ( Context->LsaHandle == LsaHandle )
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{
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break;
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}
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Context = NULL ;
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List = List->Flink ;
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}
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UnlockContextList();
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return( Context );
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}
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VOID
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XtcbDeleteUserContext(
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IN LSA_SEC_HANDLE LsaHandle
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)
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{
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PXTCB_USER_CONTEXT Context ;
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Context = XtcbFindUserContext( LsaHandle );
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if ( Context )
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{
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LockContextList();
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RemoveEntryList( &Context->List );
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UnlockContextList();
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DebugLog(( DEB_TRACE, "Deleting user mode context %x, handle = %x\n",
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Context, LsaHandle ));
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LocalFree( Context );
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}
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else
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{
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DebugLog(( DEB_TRACE, "No context found for handle %x\n", LsaHandle ));
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}
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}
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