#include <Windows.h>
#include <WinInet.h>
#include <WinSnmp.h>
#include <iostream>
#pragma comment(lib, "WSNMP32.LIB")
using namespace std;


SNMPAPI_STATUS CALLBACK fCallback(HSNMP_SESSION hSession, HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LPVOID lpClientData)
{
	cout << "CallBack beep! \n";
	cout << "CallBack beep! \n";


	LPHSNMP_ENTITY srcEntity = new HSNMP_ENTITY;
	LPHSNMP_ENTITY dstEntity = new HSNMP_ENTITY;
	LPHSNMP_CONTEXT context = new HSNMP_CONTEXT;
	LPHSNMP_PDU PDU = new HSNMP_PDU;

	cout << "CallBack: Recieve: " << SnmpRecvMsg ( hSession, srcEntity, dstEntity, context, PDU) << "\n";
	cout << "CallBack: SnmpGetLastError: " << SnmpGetLastError(NULL) << "\n";

	smiLPINT PDU_type = new smiINT ;
	smiLPINT32 request_id = new smiINT32;
	smiLPINT error_status = new smiINT ;
	smiLPINT error_index = new smiINT ;
	LPHSNMP_VBL varbindlist = new HSNMP_VBL;

	cout << "CallBack: SnmpGetPduData: " << SnmpGetPduData ( *PDU, PDU_type, request_id, error_status, error_index, varbindlist) << "\n";
	cout << "CallBack: SnmpGetLastError: " << SnmpGetLastError(NULL) << "\n";


	//HSNMP_VBL vbl'
	smiUINT32 index = 1;

	smiLPOID name = new smiOID;
	smiLPVALUE value = new smiVALUE;

	cout << "CallBack: SnmpGetVb: " << SnmpGetVb (*varbindlist,index,name,value) << "\n";
	cout << "CallBack: SnmpGetLastError: " << SnmpGetLastError(NULL) << "\n";

	cout << "CallBack: value->value.sNumber: " << value->value.sNumber << "\n";

	return SNMPAPI_SUCCESS;
}

int main()
{
	cout << "Start \n";

	smiLPUINT32 nMajorVersion = 0;
	smiLPUINT32 nMinorVersion = 0;
	smiLPUINT32 nLevel = 0;
	smiLPUINT32 nTranslateMode = 0;
	smiLPUINT32 nRetransmitMode = 0;
	cout << "SnmpStartup: " << SnmpStartup (  nMajorVersion, nMinorVersion, nLevel, nTranslateMode, nRetransmitMode) << "\n";
	/*
	cout << "nMajorVersion: " << nMajorVersion << "\n";
	cout << "nMinorVersion: " << nMinorVersion << "\n";
	cout << "nLevel: " << nLevel << "\n";
	cout << "nTranslateMode: " << nTranslateMode << "\n";
	cout << "nRetransmitMode: " << nRetransmitMode << "\n";
	*/
	cout << "\n";

	//SnmpSetTranslateMode (SNMPAPI_UNTRANSLATED_V1);
	//cout << "SnmpSetTranslateMode: " << SnmpSetTranslateMode(SNMPAPI_UNTRANSLATED_V2) << "\n";
	//cout << "SnmpSetRetransmitMode: " << SnmpSetRetransmitMode(SNMPAPI_ON) << "\n";

	HWND hWnd = GetConsoleWindow();
	unsigned int wMsg = 10;
	cout << "wMsg: " << wMsg << "\n";

	SNMPAPI_CALLBACK callback = &fCallback;

	cout << "SnmpCreateSession: " << "\n";
	//HSNMP_SESSION hSession = SnmpCreateSession (0,0,fCallback,NULL);
	HSNMP_SESSION hSession = SnmpCreateSession (hWnd,0,fCallback,NULL);
	//cout << "GetLastError(): " << GetLastError() << "\n";
	cout << "SnmpGetLastError: " << SnmpGetLastError(hSession) << "\n";
	cout << "wMsg: " << wMsg << "\n";

	cout << "SNMPAPI_SUCCESS: " << SNMPAPI_SUCCESS << "\n";
	cout << "SNMPAPI_NOT_INITIALIZED: " << SNMPAPI_NOT_INITIALIZED << "\n";
	cout << "SNMPAPI_OTHER_ERROR: " << SNMPAPI_OTHER_ERROR << "\n";
	cout << "SNMPAPI_NOOP: " << SNMPAPI_NOOP << "\n";
	cout << "SNMPAPI_ALLOC_ERROR: " << SNMPAPI_ALLOC_ERROR << "\n";

	HSNMP_ENTITY srcEntity = SnmpStrToEntity(hSession,"172.31.121.180");
	HSNMP_ENTITY dstEntity = SnmpStrToEntity(hSession,"172.30.1.18");
	cout << "\n";

	// вот этот кусок, как я понимаю, не действует на SnmpRecvMsg, описанный в CallBack
	cout << "SnmpSetTimeout: " << SnmpSetTimeout(dstEntity,10) << "\n";
	cout << "SnmpGetLastError: " << SnmpGetLastError(NULL) << "\n";

	cout << "SnmpSetTimeout: " << SnmpSetRetry(dstEntity,0) << "\n";
	cout << "SnmpGetLastError: " << SnmpGetLastError(NULL) << "\n";

	cout << "SnmpSetPort: " << SnmpSetPort(dstEntity, 161) << "\n";
	cout << "SnmpGetLastError: " << SnmpGetLastError(NULL) << "\n";
	cout << "\n";

	smiOCTETS Context;
	const char *pszCommunity = "public\0";
	
	Context.ptr = (smiLPBYTE)pszCommunity;
	Context.len = lstrlen(pszCommunity);
	HSNMP_CONTEXT hContext = SnmpStrToContext(hSession, &Context);
	cout << "\n";

	smiOID SomeOid;
	cout << "SnmpStrToOid: " << SnmpStrToOid(".1.3.6.1.2.1.1.7.0\0", &SomeOid) << "\n";

	smiVALUE value;
	value.syntax=SNMP_SYNTAX_INT;
	value.value.sNumber=NULL;

	//HSNMP_VBL hVbl = SnmpCreateVbl(hSession, &SomeOid, &value);
	HSNMP_VBL hVbl = SnmpCreateVbl(hSession, &SomeOid, NULL);

	smiINT32 request_id = 12345; // не влияет ни на что
	cout << "SnmpCreateVbl GetLastError: " << SnmpGetLastError(hSession) << "\n";
	HSNMP_PDU hPDU = SnmpCreatePdu(hSession, SNMP_PDU_GET, NULL, NULL, NULL, hVbl);
	cout << "SnmpCreatePdu GetLastError: " << SnmpGetLastError(hSession) << "\n";
	cout << "\n";

	cout << "SnmpSendMsg: " << SnmpSendMsg ( hSession, srcEntity, dstEntity, hContext, hPDU) << "\n";
	cout << "SnmpSendMsg SnmpGetLastError: " << SnmpGetLastError(hSession) << "\n";
	cout << "\n";

	cout << "HaHa1! \n";
	cout << "value.value.sNumber: " << value.value.sNumber << "\n";
	cout << "HaHa3! \n";

	for(int i=0;i<100000000;i++)
	{
		if ((i*10) %100000000 ==0) cout << "HaHa - " << (i*10) /100000000 << "\n";
		i++;i--;
	}

	cout << "End \n";
	return 0;
}