SNMP编程

开发平台：

Visual C++

DoFindSubnet().cpp：源码内容

							#include "stdafx.h"
#include "MIB.h"
#include "winsock2.h"
#include "SNMPAppDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define WM_ROUTERFINISH WM_USER+777
#define WM_SUBNETFINISH WM_USER+779
extern CObArray routerSet;
CStringArray subnetIpSet;
BOOL g_Stop;
BOOL InitPing();
BOOL PingSubnet(CString& host,CString& netmask);
BOOL Ping(char* sHost);
void strPrintf(const char * pstr,int style=0,int color=0);
enum {normal=0,bold=1,italic=2};
enum {black=0,blue=0x00ff0000,green=0x0000ff00,red=0x000000ff};
UINT DoFindSubnet(LPVOID pParam)
{
	g_Stop=FALSE;
	CString strTemp;
	if (!InitPing())
		return 0;
	
	CSNMPAppDlg* pMainWnd=(CSNMPAppDlg*)pParam;
	strPrintf("nnStart subnet finding...n",italic,black);
	for (int i=0;i<routerSet.GetSize();i++)
	{
		CRouter* pRouter=(CRouter*)routerSet.GetAt(i);
		strTemp.Format("nFinding subnet of router %s:n",
			pRouter->m_sys.sysName);
		strPrintf(strTemp,italic,black);
		for (int j=0;j<pRouter->m_ipAddrTable.m_ipAddrTableEntries.GetSize();j++)
		{
			CipAddrTableEntry* pEntry=
				(CipAddrTableEntry*)pRouter->m_ipAddrTable.m_ipAddrTableEntries.GetAt(j);
			strTemp.Format("find subnet in interface %sn",pEntry->ipAdEntAddr);
			strPrintf(strTemp,italic,black);
			PingSubnet(pEntry->ipAdEntAddr,pEntry->ipAdEntNetMask);
		}
		strTemp.Format("The End of finding subnet of router %s:n",
			pRouter->m_sys.sysName);
		strPrintf(strTemp,italic,red);
	}
	strPrintf("Find subnet OK!n",italic,red);
	pMainWnd->SendMessage(WM_SUBNETFINISH, 0, 0);
	return 1;
}
BOOL PingSubnet(CString& host,CString& netmask)
{
	CString temp;
	unsigned long subnetIp,subnetMask,currIp;
	if ( host.CompareNoCase("127.0.0.1")==0 ||
		host.CompareNoCase("0.0.0.0")==0 )
	{
		strPrintf("No need to find subnet.n",italic,red);
		return FALSE;
	}
	subnetMask=inet_addr(netmask);
	subnetIp=inet_addr(host);
	currIp=subnetIp;
	subnetIp &= subnetMask;
	temp=inet_ntoa(*((struct in_addr*)(&subnetIp)));
	unsigned long count=(~subnetMask)>>24;
	for (unsigned long i=1;i<count;i++)
	{
		currIp=subnetIp+(i<<24);
		CString strCurrIp=inet_ntoa(*((struct in_addr*)(&currIp)));
		if (g_Stop)
		{
			strPrintf("nThread stop.n",italic,red);
			return FALSE;
		}
		if (Ping(strCurrIp.GetBuffer(15)))
		{
			subnetIpSet.Add(strCurrIp);
			temp.Format("  %s",strCurrIp);
			strPrintf(temp,bold,blue);
		}
	}
	strPrintf("nn");
	return TRUE;
}

						