dllado.cpp

VC写的实现HTTP协议的完成程序

// dllado.cpp : Defines the entry point for the DLL application.
//

#include "stdafx.h"
#include "dllado.h"
#include "curl.h"
#include "stdlib.h"
#include <time.h>
#include <sys/timeb.h>
// This is the constructor of a class that has been exported.
// see dllado.h for the class definition
struct sarg{
	char machine_ip[30];
	char catalog[16];
	char user[32];
	char pass[30];
}targ;


//
//  MODULE: Ado.cpp
//
//	AUTHOR: Carlos Antollini 
//
//  mailto: [e-mail]
//
//	Date: 07/25/2002
//
//	Version 2.04
// 


#define ChunkSize 100
///////////////////////////////////////////////////////
//
// CADODatabase Class
//

DWORD CADODatabase::GetRecordCount(_RecordsetPtr m_pRs)
{
	DWORD numRows = 0;

	numRows = m_pRs->GetRecordCount();

	if(numRows == -1)
	{
		if(m_pRs->EndOfFile != VARIANT_TRUE)
			m_pRs->MoveFirst();

		while(m_pRs->EndOfFile != VARIANT_TRUE)
		{
			numRows++;
			m_pRs->MoveNext();
		}
		if(numRows > 0)
			m_pRs->MoveFirst();
	}
	return numRows;
}

BOOL CADODatabase::Open(LPCTSTR lpstrConnection, LPCTSTR lpstrUserID, LPCTSTR lpstrPassword)
{
	HRESULT hr = S_OK;

	if(IsOpen())
		Close();

	if(strcmp(lpstrConnection, _T("")) != 0)
		m_strConnection = lpstrConnection;

	ASSERT(!m_strConnection.IsEmpty());

	try
	{
		hr = m_pConnection->Open(_bstr_t(m_strConnection), _bstr_t(lpstrUserID), _bstr_t(lpstrPassword), NULL);
		return hr == S_OK;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}

}

void CADODatabase::dump_com_error(_com_error &e)
{
	CString ErrorStr;


	_bstr_t bstrSource(e.Source());
	_bstr_t bstrDescription(e.Description());
	ErrorStr.Format( "CADODataBase Error\n\tCode = %08lx\n\tCode meaning = %s\n\tSource = %s\n\tDescription = %s\n",
		e.Error(), e.ErrorMessage(), (LPCSTR)bstrSource, (LPCSTR)bstrDescription );
	m_strLastError = _T("Connection String = " + GetConnectionString() + '\n' + ErrorStr);
	m_dwLastError = e.Error(); 
#ifdef _DEBUG
	AfxMessageBox( ErrorStr, MB_OK | MB_ICONERROR );
#endif	
}

BOOL CADODatabase::IsOpen()
{
	if(m_pConnection )
		return m_pConnection->GetState() != adStateClosed;
	return FALSE;
}

void CADODatabase::Close()
{
	if(IsOpen())
		m_pConnection->Close();
}


///////////////////////////////////////////////////////
//
// CADORecordset Class
//

CADORecordset::CADORecordset(CADODatabase* pAdoDatabase)
{
	m_pRecordset = NULL;
	m_pCmd = NULL;
	m_strQuery = _T("");
	m_pRecordset.CreateInstance(__uuidof(Recordset));
	m_pCmd.CreateInstance(__uuidof(Command));
	m_nEditStatus = CADORecordset::dbEditNone;
	m_nSearchDirection = CADORecordset::searchForward;

	m_pConnection = pAdoDatabase->GetActiveConnection();
}

BOOL CADORecordset::Open(_ConnectionPtr mpdb, LPCTSTR lpstrExec, int nOption)
{	
	Close();

	if(strcmp(lpstrExec, _T("")) != 0)
		m_strQuery = lpstrExec;

	ASSERT(!m_strQuery.IsEmpty());

	m_strQuery.TrimLeft();
	BOOL bIsSelect = m_strQuery.Mid(0, strlen("Select ")).CompareNoCase("select ") == 0 && nOption == openUnknown;

	try
	{
		m_pRecordset->CursorType = adOpenStatic;
		m_pRecordset->CursorLocation = adUseClient;
		if(bIsSelect || nOption == openQuery || nOption == openUnknown)
			m_pRecordset->Open((LPCSTR)m_strQuery, _variant_t((IDispatch*)mpdb, TRUE), 
			adOpenStatic, adLockOptimistic, adCmdUnknown);
		else if(nOption == openTable)
			m_pRecordset->Open((LPCSTR)m_strQuery, _variant_t((IDispatch*)mpdb, TRUE), 
			adOpenKeyset, adLockOptimistic, adCmdTable);
		else if(nOption == openStoredProc)
		{
			m_pCmd->ActiveConnection = mpdb;
			m_pCmd->CommandText = _bstr_t(m_strQuery);
			m_pCmd->CommandType = adCmdStoredProc;
			m_pConnection->CursorLocation = adUseClient;

			m_pRecordset = m_pCmd->Execute(NULL, NULL, adCmdText);
		}
		else
		{
			TRACE( "Unknown parameter. %d", nOption);
			return FALSE;
		}
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}

	return m_pRecordset != NULL;
}

BOOL CADORecordset::Open(LPCTSTR lpstrExec, int nOption)
{
	ASSERT(m_pConnection != NULL);
	ASSERT(m_pConnection->GetState() != adStateClosed);
	return Open(m_pConnection, lpstrExec, nOption);
}

BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, double& dbValue)
{	
	double val = (double)NULL;
	_variant_t vtFld;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
		switch(vtFld.vt)
		{
		case VT_R4:
			val = vtFld.fltVal;
			break;
		case VT_R8:
			val = vtFld.dblVal;
			break;
		case VT_DECIMAL:
			//Corrected by Jos?Carlos Mart韓ez Gal醤
			val = vtFld.decVal.Lo32;
			val *= (vtFld.decVal.sign == 128)? -1 : 1;
			val /= pow(10, vtFld.decVal.scale); 
			break;
		case VT_UI1:
			val = vtFld.iVal;
			break;
		case VT_I2:
		case VT_I4:
			val = vtFld.lVal;
			break;
		case VT_INT:
			val = vtFld.intVal;
			break;
		case VT_NULL:
		case VT_EMPTY:
			val = 0;
			break;
		default:
			val = vtFld.dblVal;
		}
		dbValue = val;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}


BOOL CADORecordset::GetFieldValue(int nIndex, double& dbValue)
{	
	double val = (double)NULL;
	_variant_t vtFld;
	_variant_t vtIndex;

	vtIndex.vt = VT_I2;
	vtIndex.iVal = nIndex;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
		switch(vtFld.vt)
		{
		case VT_R4:
			val = vtFld.fltVal;
			break;
		case VT_R8:
			val = vtFld.dblVal;
			break;
		case VT_DECIMAL:
			//Corrected by Jos?Carlos Mart韓ez Gal醤
			val = vtFld.decVal.Lo32;
			val *= (vtFld.decVal.sign == 128)? -1 : 1;
			val /= pow(10, vtFld.decVal.scale); 
			break;
		case VT_UI1:
			val = vtFld.iVal;
			break;
		case VT_I2:
		case VT_I4:
			val = vtFld.lVal;
			break;
		case VT_INT:
			val = vtFld.intVal;
			break;
		case VT_NULL:
		case VT_EMPTY:
			val = 0;
			break;
		default:
			val = 0;
		}
		dbValue = val;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}


BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, long& lValue)
{
	long val = (long)NULL;
	_variant_t vtFld;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
		if(vtFld.vt != VT_NULL && vtFld.vt != VT_EMPTY)
			val = vtFld.lVal;
		lValue = val;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}

BOOL CADORecordset::GetFieldValue(int nIndex, long& lValue)
{
	long val = (long)NULL;
	_variant_t vtFld;
	_variant_t vtIndex;

	vtIndex.vt = VT_I2;
	vtIndex.iVal = nIndex;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
		if(vtFld.vt != VT_NULL && vtFld.vt != VT_EMPTY)
			val = vtFld.lVal;
		lValue = val;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}


BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, unsigned long& ulValue)
{
	long val = (long)NULL;
	_variant_t vtFld;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
		if(vtFld.vt != VT_NULL && vtFld.vt != VT_EMPTY)
			val = vtFld.ulVal;
		ulValue = val;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}

BOOL CADORecordset::GetFieldValue(int nIndex, unsigned long& ulValue)
{
	long val = (long)NULL;
	_variant_t vtFld;
	_variant_t vtIndex;

	vtIndex.vt = VT_I2;
	vtIndex.iVal = nIndex;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
		if(vtFld.vt != VT_NULL && vtFld.vt != VT_EMPTY)
			val = vtFld.ulVal;
		ulValue = val;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}

BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, int& nValue)
{
	int val = NULL;
	_variant_t vtFld;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
		switch(vtFld.vt)
		{
		case VT_BOOL:
			val = vtFld.boolVal;
			break;
		case VT_I2:
		case VT_UI1:
			val = vtFld.iVal;
			break;
		case VT_INT:
			val = vtFld.intVal;
			break;
		case VT_NULL:
		case VT_EMPTY:
			val = 0;
			break;
		default:
			val = vtFld.iVal;
		}	
		nValue = val;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}

BOOL CADORecordset::GetFieldValue(int nIndex, int& nValue)
{
	int val = (int)NULL;
	_variant_t vtFld;
	_variant_t vtIndex;

	vtIndex.vt = VT_I2;
	vtIndex.iVal = nIndex;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
		switch(vtFld.vt)
		{
		case VT_BOOL:
			val = vtFld.boolVal;
			break;
		case VT_I2:
		case VT_UI1:
			val = vtFld.iVal;
			break;
		case VT_INT:
			val = vtFld.intVal;
			break;
		case VT_NULL:
		case VT_EMPTY:
			val = 0;
			break;
		default:
			val = vtFld.iVal;
		}	
		nValue = val;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}

BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, CString& strValue, CString strDateFormat)
{
	CString str = _T("");
	_variant_t vtFld;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
		switch(vtFld.vt) 
		{
		case VT_R4:
			str = DblToStr(vtFld.fltVal);
			break;
		case VT_R8:
			str = DblToStr(vtFld.dblVal);
			break;
		case VT_BSTR:
			str = vtFld.bstrVal;
			break;
		case VT_I2:
		case VT_UI1:
			str = IntToStr(vtFld.iVal);
			break;
		case VT_INT:
			str = IntToStr(vtFld.intVal);
			break;
		case VT_I4:
			str = LongToStr(vtFld.lVal);
			break;
		case VT_UI4:
			str = ULongToStr(vtFld.ulVal);
			break;
		case VT_DECIMAL:
			{
				//Corrected by Jos?Carlos Mart韓ez Gal醤
				double val = vtFld.decVal.Lo32;
				val *= (vtFld.decVal.sign == 128)? -1 : 1;
				val /= pow(10, vtFld.decVal.scale); 
				str = DblToStr(val);
			}
			break;
		case VT_DATE:
			{
				COleDateTime dt(vtFld);

				if(strDateFormat.IsEmpty())
					strDateFormat = _T("%Y-%m-%d %H:%M:%S");
				str = dt.Format(strDateFormat);
			}
			break;
		case VT_EMPTY:
		case VT_NULL:
			str.Empty();
			break;
		default:
			str.Empty();
			return FALSE;
		}
		strValue = str;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}

BOOL CADORecordset::GetFieldValue(int nIndex, CString& strValue, CString strDateFormat)
{
	CString str = _T("");
	_variant_t vtFld;
	_variant_t vtIndex;

	vtIndex.vt = VT_I2;
	vtIndex.iVal = nIndex;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
		switch(vtFld.vt) 
		{
		case VT_R4:
			str = DblToStr(vtFld.fltVal);
			break;
		case VT_R8:
			str = DblToStr(vtFld.dblVal);
			break;
		case VT_BSTR:
			str = vtFld.bstrVal;
			break;
		case VT_I2:
		case VT_UI1:
			str = IntToStr(vtFld.iVal);
			break;
		case VT_INT:
			str = IntToStr(vtFld.intVal);
			break;
		case VT_I4:
			str = LongToStr(vtFld.lVal);
			break;
		case VT_UI4:
			str = ULongToStr(vtFld.ulVal);
			break;
		case VT_DECIMAL:
			{
				//Corrected by Jos?Carlos Mart韓ez Gal醤
				double val = vtFld.decVal.Lo32;
				val *= (vtFld.decVal.sign == 128)? -1 : 1;
				val /= pow(10, vtFld.decVal.scale); 
				str = DblToStr(val);
			}
			break;
		case VT_DATE:
			{
				COleDateTime dt(vtFld);

				if(strDateFormat.IsEmpty())
					strDateFormat = _T("%Y-%m-%d %H:%M:%S");
				str = dt.Format(strDateFormat);
			}
			break;
		case VT_EMPTY:
		case VT_NULL:
			str.Empty();
			break;
		default:
			str.Empty();
			return FALSE;
		}
		strValue = str;
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}

BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, COleDateTime& time)
{
	_variant_t vtFld;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
		switch(vtFld.vt) 
		{
		case VT_DATE:
			{
				COleDateTime dt(vtFld);
				time = dt;
			}
			break;
		case VT_EMPTY:
		case VT_NULL:
			time.SetStatus(COleDateTime::null);
			break;
		default:
			return FALSE;
		}
		return TRUE;
	}
	catch(_com_error &e)
	{
		dump_com_error(e);
		return FALSE;
	}
}

BOOL CADORecordset::GetFieldValue(int nIndex, COleDateTime& time)
{
	_variant_t vtFld;
	_variant_t vtIndex;

	vtIndex.vt = VT_I2;
	vtIndex.iVal = nIndex;

	try
	{
		vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
		switch(vtFld.vt) 
		{
		case VT_DATE:
			{
				COleDateTime dt(vtFld);
				time = dt;
			}
			break;
		case VT_EMPTY:
		case VT_NULL:
			time.SetStatus(COleDateTime::null);
			break;
		default:
			return FALSE;
		}
		return TRUE;
	}
	catch(_com_error &e)