Message Queuing(MSMQ)学习之旅（三）——获取机器信息

MSMQ能够通过MQGetMachineProperties 获取本机或其他机器的的公共密钥，site list,path name等信息。这里需要注意的就是如果PROPID_QM_ENCRYPTION_PK和PROPID_QM_ENCRYPTION_PK_BASE同时存在，将有一个属性不能成功获取。而MS推荐使用的是PROPID_QM_ENCRYPTION_PK_BASE参数，所以就当PROPID_QM_ENCRYPTION_PK不存在吧。不多说，上代码。

 

void GetMachineProp(){

	const int NUMBEROFPROPERTIES = 8;

	QMPROPID aPropId[NUMBEROFPROPERTIES];

	MQPROPVARIANT aPropVar[NUMBEROFPROPERTIES];

	HRESULT aStatus[NUMBEROFPROPERTIES];

	HRESULT hr = MQ_OK;

	DWORD cPropId = 0;

	aPropId[cPropId] = PROPID_QM_CONNECTION;

	aPropVar[cPropId].vt = VT_NULL;

	cPropId++;

	

	aPropId[cPropId] = PROPID_QM_ENCRYPTION_PK_BASE;

	aPropVar[cPropId].vt = VT_NULL;

	cPropId++;



	aPropId[cPropId] = PROPID_QM_ENCRYPTION_PK_ENHANCED;

	aPropVar[cPropId].vt = VT_NULL;

	cPropId++;



	aPropId[cPropId] = PROPID_QM_MACHINE_ID;

	aPropVar[cPropId].vt = VT_NULL;

	cPropId++;



	aPropId[cPropId] = PROPID_QM_PATHNAME;

	aPropVar[cPropId].vt = VT_NULL;

	cPropId++;



	aPropId[cPropId] = PROPID_QM_SITE_ID;

	aPropVar[cPropId].vt = VT_NULL;

	cPropId++;



	aPropId[cPropId] = PROPID_QM_PATHNAME_DNS;

	aPropVar[cPropId].vt = VT_NULL;

	cPropId++;

	

	MQQMPROPS  pQMProps;

	pQMProps.cProp =cPropId;

	pQMProps.aPropID = aPropId;

	pQMProps.aPropVar = aPropVar;

	pQMProps.aStatus = aStatus;

	MQGetMachineProperties(NULL,NULL,&pQMProps);

	

	for(int i=0;i<cPropId;i++){

		HandleMsmqError(pQMProps.aStatus[i]);

		if( pQMProps.aPropVar[i].vt== (VT_VECTOR | VT_LPWSTR)){

			for (int j = 0; j < pQMProps.aPropVar[i].calpwstr.cElems; j++)

			{

				std::wcout<<pQMProps.aPropVar[i].calpwstr.pElems[j]<<std::endl;

				MQFreeMemory(pQMProps.aPropVar[i].calpwstr.pElems[j]);  //Free each element

			}

			MQFreeMemory(pQMProps.aPropVar[i].calpwstr.pElems); 

		}

		else if( pQMProps.aPropVar[i].vt== (VT_VECTOR | VT_UI1)){

			MQFreeMemory(pQMProps.aPropVar[i].caub.pElems); 

		}

		else{

			MQFreeMemory(pQMProps.aPropVar[i].pwszVal);

		}

	}

}