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549 lines
15 KiB
549 lines
15 KiB
/**********************************************************************/
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/** Microsoft Windows NT **/
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/** Copyright(c) Microsoft Corp., 1993 **/
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/**********************************************************************/
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/*
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perfwins.c
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This file implements the Extensible Performance Objects for
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the FTP Server service.
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FILE HISTORY:
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KeithMo 07-Jun-1993 Created, based on RussBl's sample code.
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*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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#include <winperf.h>
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#include <lm.h>
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#include <string.h>
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#include <stdlib.h>
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#include "winsctrs.h"
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#include "perfmsg.h"
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#include "perfutil.h"
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#include "winsintf.h"
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#include "winsdata.h"
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#include "debug.h"
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#include "winsevnt.h"
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//
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// Private globals.
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//
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DWORD cOpens = 0; // Active "opens" reference count.
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BOOL fInitOK = FALSE; // TRUE if DLL initialized OK.
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BOOL sfLogOpen; //indicates whether the log is
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//open or closed
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BOOL sfErrReported; //to prevent the same error from being
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//logged continuously
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#if DBG
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DWORD WinsdDebug = 0; // Debug behaviour flags.
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#endif // DBG
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//
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// Public prototypes.
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//
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PM_OPEN_PROC OpenWinsPerformanceData;
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PM_COLLECT_PROC CollectWinsPerformanceData;
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PM_CLOSE_PROC CloseWinsPerformanceData;
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//
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// Public functions.
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//
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/*******************************************************************
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NAME: OpenWinsPerformanceData
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SYNOPSIS: Initializes the data structures used to communicate
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performance counters with the registry.
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ENTRY: lpDeviceNames - Poitner to object ID of each device
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to be opened.
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RETURNS: DWORD - Win32 status code.
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HISTORY:
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Pradeepb 20-July-1993 Created.
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********************************************************************/
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DWORD OpenWinsPerformanceData( LPWSTR lpDeviceNames )
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{
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DWORD err = NO_ERROR;
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HKEY hkey = NULL;
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// DWORD size;
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// DWORD type;
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DWORD dwFirstCounter;
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DWORD dwFirstHelp;
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IF_DEBUG( ENTRYPOINTS )
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{
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WINSD_PRINT(( "in OpenWinsPerformanceData\n" ));
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}
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//
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// Since SCREG is multi-threaded and will call this routine in
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// order to service remote performance queries, this library
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// must keep track of how many times it has been opened (i.e.
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// how many threads have accessed it). The registry routines will
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// limit access to the initialization routine to only one thread
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// at a time so synchronization (i.e. reentrancy) should not be
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// a problem.
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//
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if( !fInitOK )
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{
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PERF_COUNTER_DEFINITION * pctr;
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DWORD i;
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if(AddSrcToReg() == ERROR_SUCCESS)
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{
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if (!MonOpenEventLog())
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{
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sfLogOpen = TRUE;
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}
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}
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//
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// This is the *first* open.
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//
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dwFirstCounter = WINSCTRS_FIRST_COUNTER;
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dwFirstHelp = WINSCTRS_FIRST_HELP;
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//
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// Update the object & counter name & help indicies.
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//
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WinsDataDataDefinition.ObjectType.ObjectNameTitleIndex
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+= dwFirstCounter;
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WinsDataDataDefinition.ObjectType.ObjectHelpTitleIndex
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+= dwFirstHelp;
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pctr = &WinsDataDataDefinition.UniqueReg;
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for( i = 0 ; i < NUMBER_OF_WINSDATA_COUNTERS ; i++ )
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{
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pctr->CounterNameTitleIndex += dwFirstCounter;
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pctr->CounterHelpTitleIndex += dwFirstHelp;
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pctr++;
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}
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//
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// Remember that we initialized OK.
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//
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fInitOK = TRUE;
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//
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// Close the registry if we managed to actually open it.
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//
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if( hkey != NULL )
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{
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RegCloseKey( hkey );
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hkey = NULL;
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}
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IF_DEBUG( OPEN )
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{
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if( err != NO_ERROR )
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{
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WINSD_PRINT(( "Cannot read registry data, error %lu\n", err ));
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}
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}
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}
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//
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// Bump open counter.
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//
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if( err == NO_ERROR )
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{
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cOpens++;
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}
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//
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// if sfLogOpen is FALSE, it means that all threads we closed the
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// event log in CloseWinsPerformanceData
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//
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if (!sfLogOpen)
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{
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MonOpenEventLog();
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}
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return err;
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} // OpenWinsPerformanceData
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/*******************************************************************
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NAME: CollectWinsPerformanceData
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SYNOPSIS: Initializes the data structures used to communicate
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ENTRY: lpValueName - The name of the value to retrieve.
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lppData - On entry contains a pointer to the buffer to
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receive the completed PerfDataBlock & subordinate
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structures. On exit, points to the first bytes
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*after* the data structures added by this routine.
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lpcbTotalBytes - On entry contains a pointer to the
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size (in BYTEs) of the buffer referenced by lppData.
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On exit, contains the number of BYTEs added by this
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routine.
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lpNumObjectTypes - Receives the number of objects added
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by this routine.
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RETURNS: DWORD - Win32 status code. MUST be either NO_ERROR
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or ERROR_MORE_DATA.
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HISTORY:
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KeithMo 07-Jun-1993 Created.
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********************************************************************/
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DWORD CollectWinsPerformanceData( LPWSTR lpValueName,
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LPVOID * lppData,
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LPDWORD lpcbTotalBytes,
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LPDWORD lpNumObjectTypes )
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{
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DWORD dwQueryType;
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ULONG cbRequired;
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DWORD *pdwCounter;
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WINSDATA_COUNTER_BLOCK *pCounterBlock;
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WINSDATA_DATA_DEFINITION *pWinsDataDataDefinition;
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WINSINTF_RESULTS_NEW_T Results;
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#if 0
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WINSINTF_RESULTS_T Results;
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#endif
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WINSINTF_STAT_T *pWinsStats = &Results.WinsStat;
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DWORD Status;
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IF_DEBUG( ENTRYPOINTS )
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{
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WINSD_PRINT(( "in CollectWinsPerformanceData\n" ));
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WINSD_PRINT(( " lpValueName = %08lX (%ls)\n",
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lpValueName,
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lpValueName ));
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WINSD_PRINT(( " lppData = %08lX (%08lX)\n",
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lppData,
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*lppData ));
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WINSD_PRINT(( " lpcbTotalBytes = %08lX (%08lX)\n",
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lpcbTotalBytes,
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*lpcbTotalBytes ));
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WINSD_PRINT(( " lpNumObjectTypes = %08lX (%08lX)\n",
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lpNumObjectTypes,
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*lpNumObjectTypes ));
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}
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//
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// No need to even try if we failed to open...
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//
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if( !fInitOK )
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{
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IF_DEBUG( COLLECT )
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{
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WINSD_PRINT(( "Initialization failed, CollectWinsPerformanceData aborting\n" ));
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}
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*lpcbTotalBytes = 0;
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*lpNumObjectTypes = 0;
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//
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// According to the Performance Counter design, this
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// is a successful exit. Go figure.
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//
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return NO_ERROR;
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}
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//
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// Determine the query type.
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//
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dwQueryType = GetQueryType( lpValueName );
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if( dwQueryType == QUERY_FOREIGN )
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{
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IF_DEBUG( COLLECT )
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{
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WINSD_PRINT(( "foreign queries not supported\n" ));
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}
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//
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// We don't do foreign queries.
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//
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*lpcbTotalBytes = 0;
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*lpNumObjectTypes = 0;
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return NO_ERROR;
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}
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if( dwQueryType == QUERY_ITEMS )
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{
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//
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// The registry is asking for a specific object. Let's
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// see if we're one of the chosen.
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//
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if( !IsNumberInUnicodeList(
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WinsDataDataDefinition.ObjectType.ObjectNameTitleIndex,
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lpValueName ) )
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{
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IF_DEBUG( COLLECT )
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{
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WINSD_PRINT(( "%ls not a supported object type\n", lpValueName ));
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}
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*lpcbTotalBytes = 0;
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*lpNumObjectTypes = 0;
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return NO_ERROR;
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}
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}
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//
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// See if there's enough space.
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//
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pWinsDataDataDefinition = (WINSDATA_DATA_DEFINITION *)*lppData;
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cbRequired = sizeof(WINSDATA_DATA_DEFINITION) +
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WINSDATA_SIZE_OF_PERFORMANCE_DATA;
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if( *lpcbTotalBytes < cbRequired )
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{
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IF_DEBUG( COLLECT )
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{
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WINSD_PRINT(( "%lu bytes of buffer insufficient, %lu needed\n",
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*lpcbTotalBytes,
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cbRequired ));
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}
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//
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// Nope.
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//
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*lpcbTotalBytes = 0;
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*lpNumObjectTypes = 0;
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return ERROR_MORE_DATA;
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}
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//
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// Copy the (constant, initialized) Object Type and counter definitions
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// to the caller's data buffer
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//
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memmove( pWinsDataDataDefinition,
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&WinsDataDataDefinition,
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sizeof(WINSDATA_DATA_DEFINITION) );
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//
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// Try to retrieve the data.
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//
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Results.WinsStat.NoOfPnrs = 0;
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Results.WinsStat.pRplPnrs = NULL;
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Results.pAddVersMaps = NULL;
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{
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WINSINTF_BIND_DATA_T BindData;
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handle_t BindHdl;
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BindData.fTcpIp = FALSE;
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BindData.pPipeName = (LPBYTE)TEXT("\\pipe\\WinsPipe");
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BindData.pServerAdd = (LPBYTE)TEXT("");
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BindHdl = WinsBind(&BindData);
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Status = WinsStatusNew(BindHdl, WINSINTF_E_STAT, &Results);
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WinsUnbind(&BindData, BindHdl);
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}
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if( Status != WINSINTF_SUCCESS )
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{
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IF_DEBUG( COLLECT )
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{
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WINSD_PRINT(( "cannot retrieve statistics, error %lu\n",
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Status ));
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}
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//
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// if we haven't logged the error yet, log it
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//
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if (!sfErrReported)
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{
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REPORT_ERROR(WINS_EVT_WINS_STATUS_ERR, LOG_USER);
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sfErrReported = TRUE;
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}
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//
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// Error retrieving statistics.
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//
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*lpcbTotalBytes = 0;
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*lpNumObjectTypes = 0;
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return NO_ERROR;
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}
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//
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// Ahaa, we got the statistics, reset flag if set
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//
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if (sfErrReported)
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{
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sfErrReported = FALSE;
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}
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//
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// Format the WINS Server data.
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//
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pCounterBlock = (WINSDATA_COUNTER_BLOCK *)( pWinsDataDataDefinition + 1 );
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pCounterBlock->PerfCounterBlock.ByteLength =
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WINSDATA_SIZE_OF_PERFORMANCE_DATA;
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//
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// Get the pointer to the first (DWORD) counter. This
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// pointer *must* be quadword aligned.
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//
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pdwCounter = (DWORD *)( pCounterBlock + 1 );
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WINSD_ASSERT( ( (DWORD_PTR)pdwCounter & 3 ) == 0 );
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IF_DEBUG( COLLECT )
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{
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WINSD_PRINT(( "pWinsDataDataDefinition = %08lX\n", pWinsDataDataDefinition ));
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WINSD_PRINT(( "pCounterBlock = %08lX\n", pCounterBlock ));
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WINSD_PRINT(( "ByteLength = %08lX\n", pCounterBlock->PerfCounterBlock.ByteLength ));
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WINSD_PRINT(( "pliCounter = %08lX\n", pdwCounter ));
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}
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//
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// Move the DWORDs into the buffer.
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//
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IF_DEBUG( COLLECT )
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{
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WINSD_PRINT(( "pdwCounter = %08lX\n", pdwCounter ));
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}
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfUniqueReg;
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfGroupReg;
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*pdwCounter++ = (DWORD)(pWinsStats->Counters.NoOfUniqueReg +
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pWinsStats->Counters.NoOfGroupReg);
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfUniqueRef;
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfGroupRef;
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*pdwCounter++ = (DWORD)(pWinsStats->Counters.NoOfUniqueRef +
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pWinsStats->Counters.NoOfGroupRef);
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*pdwCounter++ = (DWORD)(pWinsStats->Counters.NoOfSuccRel +
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pWinsStats->Counters.NoOfFailRel);
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*pdwCounter++ = (DWORD)(pWinsStats->Counters.NoOfSuccQueries +
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pWinsStats->Counters.NoOfFailQueries);
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfUniqueCnf;
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfGroupCnf;
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*pdwCounter++ = (DWORD)(pWinsStats->Counters.NoOfUniqueCnf +
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pWinsStats->Counters.NoOfGroupCnf);
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfSuccRel;
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfFailRel;
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfSuccQueries;
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*pdwCounter++ = (DWORD)pWinsStats->Counters.NoOfFailQueries;
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//
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// Update arguments for return.
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//
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*lppData = (PVOID)pdwCounter;
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*lpNumObjectTypes = 1;
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*lpcbTotalBytes = (DWORD)((BYTE *)pdwCounter - (BYTE *)pWinsDataDataDefinition);
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IF_DEBUG( COLLECT )
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{
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WINSD_PRINT(( "pData = %08lX\n", *lppData ));
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WINSD_PRINT(( "NumObjectTypes = %08lX\n", *lpNumObjectTypes ));
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WINSD_PRINT(( "cbTotalBytes = %08lX\n", *lpcbTotalBytes ));
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}
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//
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// Free the API buffer.
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//
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#if 0
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NetApiBufferFree( (LPBYTE)pWinsStats );
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#endif
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//
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// Free the buffers RPC allocates.
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//
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WinsFreeMem( Results.pAddVersMaps );
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WinsFreeMem( Results.WinsStat.pRplPnrs );
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//
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// Success! Honest!!
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//
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return NO_ERROR;
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} // CollectWinsPerformanceData
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/*******************************************************************
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|
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NAME: CloseWinsPerformanceData
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|
|
SYNOPSIS: Terminates the performance counters.
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|
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RETURNS: DWORD - Win32 status code.
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|
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HISTORY:
|
|
KeithMo 07-Jun-1993 Created.
|
|
|
|
********************************************************************/
|
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DWORD CloseWinsPerformanceData( VOID )
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{
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IF_DEBUG( ENTRYPOINTS )
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{
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WINSD_PRINT(( "in CloseWinsPerformanceData\n" ));
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}
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//
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// No real cleanup to do here.
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//
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cOpens--;
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if (!cOpens)
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{
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//
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// unbind from the nameserver. There could be synch. problems since
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// sfLogOpen is changed in both Open and Close functions. This at the
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// max. will affect logging. It being unclear at this point whether or
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// not Open gets called multiple times (from all looks of it, it is only
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// called once), this flag may even not be necessary.
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//
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MonCloseEventLog();
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sfLogOpen = FALSE;
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}
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return NO_ERROR;
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} // CloseWinsPerformanceData
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