282 lines
8.3 KiB
C
282 lines
8.3 KiB
C
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/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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perfbrws.c
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Abstract:
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This file implements a Performance Object that presents
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Browser Performance object data
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Created:
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Bob Watson 22-Oct-1996
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Revision History
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--*/
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//
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// Include Files
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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 <assert.h>
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#include <winperf.h>
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#include <lmcons.h>
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#include <lmerr.h>
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#include <lmapibuf.h>
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#include <lmwksta.h>
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#include <lmbrowsr.h>
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#include <ntprfctr.h>
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#include <perfutil.h>
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#include "perfnet.h"
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#include "netsvcmc.h"
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#include "databrws.h"
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// BrowserStatFunction is used for collecting Browser Statistic Data
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typedef NET_API_STATUS (*PBROWSERQUERYSTATISTIC) (
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IN LPTSTR servername OPTIONAL,
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OUT LPBROWSER_STATISTICS *statistics
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);
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static PBROWSERQUERYSTATISTIC BrowserStatFunction = NULL;
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static HANDLE dllHandle = NULL;
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static BOOL bInitOk = FALSE;
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DWORD APIENTRY
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OpenBrowserObject (
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IN LPWSTR lpValueName
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)
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/*++
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GetBrowserStatistic - Get the I_BrowserQueryStatistics entry point
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--*/
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{
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UINT dwOldMode;
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LONG status = ERROR_SUCCESS;
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UNREFERENCED_PARAMETER (lpValueName);
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dwOldMode = SetErrorMode( SEM_FAILCRITICALERRORS );
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bInitOk = TRUE;
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//
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// Dynamically link to netapi32.dll. If it's not there just return.
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//
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dllHandle = LoadLibraryW((LPCWSTR)L"NetApi32.Dll") ;
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if ( !dllHandle || dllHandle == INVALID_HANDLE_VALUE ) {
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status = GetLastError();
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ReportEvent (hEventLog,
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EVENTLOG_ERROR_TYPE,
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0,
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PERFNET_UNABLE_OPEN_NETAPI32_DLL,
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NULL,
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0,
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sizeof(DWORD),
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NULL,
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(LPVOID)&status);
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BrowserStatFunction = NULL;
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bInitOk = FALSE;
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} else {
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//
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// Get the address of the service's main entry point. This
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// entry point has a well-known name.
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//
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BrowserStatFunction = (PBROWSERQUERYSTATISTIC)GetProcAddress (
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dllHandle, "I_BrowserQueryStatistics") ;
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if (BrowserStatFunction == NULL) {
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status = GetLastError();
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ReportEvent (hEventLog,
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EVENTLOG_ERROR_TYPE,
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0,
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PERFNET_UNABLE_LOCATE_BROWSER_PERF_FN,
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NULL,
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0,
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sizeof(DWORD),
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NULL,
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(LPVOID)&status);
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bInitOk = FALSE;
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}
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}
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SetErrorMode( dwOldMode );
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return status;
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}
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DWORD APIENTRY
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CollectBrowserObjectData(
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IN OUT LPVOID *lppData,
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IN OUT LPDWORD lpcbTotalBytes,
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IN OUT LPDWORD lpNumObjectTypes
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)
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/*++
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Routine Description:
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This routine will return the data for the Physical Disk object
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Arguments:
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IN OUT LPVOID *lppData
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IN: pointer to the address of the buffer to receive the completed
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PerfDataBlock and subordinate structures. This routine will
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append its data to the buffer starting at the point referenced
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by *lppData.
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OUT: points to the first byte after the data structure added by this
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routine. This routine updated the value at lppdata after appending
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its data.
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IN OUT LPDWORD lpcbTotalBytes
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IN: the address of the DWORD that tells the size in bytes of the
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buffer referenced by the lppData argument
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OUT: the number of bytes added by this routine is writted to the
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DWORD pointed to by this argument
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IN OUT LPDWORD NumObjectTypes
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IN: the address of the DWORD to receive the number of objects added
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by this routine
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OUT: the number of objects added by this routine is writted to the
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DWORD pointed to by this argument
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Returns:
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0 if successful, else Win 32 error code of failure
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--*/
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{
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DWORD TotalLen; // Length of the total return block
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NTSTATUS Status = ERROR_SUCCESS;
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BROWSER_DATA_DEFINITION *pBrowserDataDefinition;
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BROWSER_COUNTER_DATA *pBCD;
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BROWSER_STATISTICS BrowserStatistics;
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LPBROWSER_STATISTICS pBrowserStatistics = &BrowserStatistics;
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//
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// Check for sufficient space for browser data
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//
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if (!bInitOk) {
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// function didn't initialize so bail out here
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*lpcbTotalBytes = (DWORD) 0;
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*lpNumObjectTypes = (DWORD) 0;
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return ERROR_SUCCESS;
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}
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TotalLen = sizeof(BROWSER_DATA_DEFINITION) +
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sizeof(BROWSER_COUNTER_DATA);
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if ( *lpcbTotalBytes < TotalLen ) {
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// not enough room in the buffer for 1 instance
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// so bail
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*lpcbTotalBytes = (DWORD) 0;
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*lpNumObjectTypes = (DWORD) 0;
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return ERROR_MORE_DATA;
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}
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//
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// Define objects data block
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//
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pBrowserDataDefinition = (BROWSER_DATA_DEFINITION *) *lppData;
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memcpy (pBrowserDataDefinition,
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&BrowserDataDefinition,
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sizeof(BROWSER_DATA_DEFINITION));
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//
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// Format and collect browser data
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//
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pBCD = (PBROWSER_COUNTER_DATA)&pBrowserDataDefinition[1];
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// test for quadword alignment of the structure
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assert (((DWORD)(pBCD) & 0x00000007) == 0);
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memset (pBrowserStatistics, 0, sizeof (BrowserStatistics));
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if ( BrowserStatFunction != NULL ) {
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Status = (*BrowserStatFunction) (NULL,
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&pBrowserStatistics
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);
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} else {
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Status = STATUS_INVALID_ADDRESS;
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}
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if (NT_SUCCESS(Status)) {
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pBCD->CounterBlock.ByteLength = sizeof(BROWSER_COUNTER_DATA);
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pBCD->TotalAnnounce =
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pBCD->ServerAnnounce = BrowserStatistics.NumberOfServerAnnouncements.QuadPart;
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pBCD->TotalAnnounce +=
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pBCD->DomainAnnounce = BrowserStatistics.NumberOfDomainAnnouncements.QuadPart;
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pBCD->ElectionPacket = BrowserStatistics.NumberOfElectionPackets;
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pBCD->MailslotWrite = BrowserStatistics.NumberOfMailslotWrites;
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pBCD->ServerList = BrowserStatistics.NumberOfGetBrowserServerListRequests;
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pBCD->ServerEnum = BrowserStatistics.NumberOfServerEnumerations;
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pBCD->DomainEnum = BrowserStatistics.NumberOfDomainEnumerations;
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pBCD->OtherEnum = BrowserStatistics.NumberOfOtherEnumerations;
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pBCD->TotalEnum = BrowserStatistics.NumberOfServerEnumerations
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+ BrowserStatistics.NumberOfDomainEnumerations
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+ BrowserStatistics.NumberOfOtherEnumerations;
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pBCD->ServerAnnounceMiss = BrowserStatistics.NumberOfMissedServerAnnouncements;
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pBCD->MailslotDatagramMiss = BrowserStatistics.NumberOfMissedMailslotDatagrams;
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pBCD->ServerListMiss = BrowserStatistics.NumberOfMissedGetBrowserServerListRequests;
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pBCD->ServerAnnounceAllocMiss = BrowserStatistics.NumberOfFailedServerAnnounceAllocations;
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pBCD->MailslotAllocFail = BrowserStatistics.NumberOfFailedMailslotAllocations;
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pBCD->MailslotReceiveFail = BrowserStatistics.NumberOfFailedMailslotReceives;
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pBCD->MailslotWriteFail = BrowserStatistics.NumberOfFailedMailslotWrites;
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pBCD->MailslotOpenFail = BrowserStatistics.NumberOfFailedMailslotOpens;
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pBCD->MasterAnnounceDup = BrowserStatistics.NumberOfDuplicateMasterAnnouncements;
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pBCD->DatagramIllegal = BrowserStatistics.NumberOfIllegalDatagrams.QuadPart;
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} else {
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if (BrowserStatFunction != NULL) {
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ReportEvent (hEventLog,
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EVENTLOG_ERROR_TYPE,
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0,
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PERFNET_UNABLE_LOCATE_BROWSER_PERF_FN,
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NULL,
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0,
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sizeof(DWORD),
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NULL,
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(LPVOID)&Status);
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}
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//
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// Failure to access Browser: clear counters to 0
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//
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memset(pBCD, 0, sizeof(BROWSER_COUNTER_DATA));
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pBCD->CounterBlock.ByteLength = sizeof(BROWSER_COUNTER_DATA);
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}
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*lppData = (LPVOID)&pBCD[1];
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*lpcbTotalBytes =
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(DWORD)((LPBYTE)&pBCD[1] -
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(LPBYTE)pBrowserDataDefinition);
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*lpNumObjectTypes = 1;
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return ERROR_SUCCESS;
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}
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DWORD APIENTRY
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CloseBrowserObject ()
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{
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if (dllHandle != NULL) {
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FreeLibrary (dllHandle);
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dllHandle = NULL;
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BrowserStatFunction = NULL;
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}
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return ERROR_SUCCESS;
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}
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