SCARDNI.CPP

/*++ 
 
Copyright (c) 1996-1997  Microsoft Corporation 
 
Module Name: 
 
    SCardNI 
 
Abstract: 
 
This file contains the outline implementation of the CSCardNewInterface 
class showing aggregation example. 
 
Author: 
 
Environment: 
 
    Win32, C++ w/Exceptions, ATL, COM/OLE 
 
Revision History: 
 
Notes: 
 
--*/ 
 
////////////////////////////////////////////////////////////////////////// 
// 
// Includes 
// 
 
#include "preagg.h" 
#include "ScardAgg.h" 
#include "SCardNI.h" 
#define IID_DEFINED 
//#define CLSID_DEFINED 
#include <SCardSrv_i.c> 
 
/////////////////////////////////////////////////////////////////////////// 
// Macros 
// 
#ifdef _DEBUG 
#define TRACE_STR(name,sz) \ 
TRACE(_T("SCardAgg.DLL: CSCardNewInterface::%s: %s\n"), name, sz) 
#define TRACE_CODE(name,code) \ 
TRACE(_T("SCardAgg.DLL: CSCardNewInterface::%s: error = 0x%x\n"), name, code) 
#define TRACE_CATCH(name,code)TRACE_CODE(name,code) 
#define TRACE_CATCH_UNKNOWN(name)TRACE_STR(name,_T("An unidentified exception has occurred!")) 
#else 
#define TRACE_STR(name,sz)((void)0) 
#define TRACE_CODE(name,code)((void)0) 
#define TRACE_CATCH(name,code)((void)0) 
#define TRACE_CATCH_UNKNOWN(name)((void)0) 
#endif  // _DEBUG 
 
/*++ 
 
CSCardNewInterface::FinalConstruct: 
 
    This routine defines a final constructor that is called after the constructor 
for the template class is called. 
 
Arguments: 
 
    None 
 
Return Value: 
 
    A HRESULT value indicating the status of the requested action. 
 
ReturnMeaning 
============= 
S_OKOperation completed successfully. 
S_FALSEUnknown error occurred. 
E_OUTOFMEMORYThere is not enough memory in this process to  
satisfy the request. 
E_FAILUnspecified error. 
E_INVALIDARGOne or more arguments are invalid. 
E_UNEXPECTEDUnexpected event occurred in this function. 
 
Author: 
 
    Chris Dudley (cdudley) 2/22/1997 
 
Notes: 
 
This routine uses the NT4.0+ function CoCreateInstance to create 
the ISCardISO7816 object. In WIN95+, use CoGetClassObject returning 
the IClassFactory for the object, then use IClassFactory->CreateInstance. 
 
To create an aggregate object, the Controlling IUnknown is passed 
in during creation of the object to be aggregated. Is this example, 
the ATL function GetControllingUnknown is used. This is ATL only and will 
work for aggregate and non-aggregate classes. 
 
    Also, changes must be made to the ATL COM map to support the Aggregation. 
See scardni.h. 
 
--*/ 
 
HRESULT CSCardNewInterface::FinalConstruct() 
{ 
// Locals. 
HRESULT hresult = S_OK; 
IUnknown* pUnkOuter = GetControllingUnknown(); 
 
try { 
// Create ISCardISO7816 as aggregate. Only valid IID is IUnknown!! 
hresult = CoCreateInstance(CLSID_CSCardISO7816, 
pUnkOuter,// Controlling Unknown 
CLSCTX_ALL, 
IID_IUnknown, 
(LPVOID*) &m_pUnkISCardISO7816); 
if (FAILED(hresult)) 
throw (hresult); 
} 
 
catch ( HRESULT hr ) { 
hresult = hr; 
TRACE_CATCH(_T("FinalConstruct"),hresult); 
} 
 
catch (...) { 
hresult = E_UNEXPECTED; 
TRACE_CATCH(_T("FinalConstruct"), hresult); 
} 
 
return (hresult); 
} 
 
 
/*++ 
 
CSCardNewInterface::FinalRelease: 
 
    This routine defines a final Release. 
 
Arguments: 
 
    None 
 
Return Value: 
 
    A HRESULT value indicating the status of the requested action. 
 
ReturnMeaning 
============= 
S_OKOperation completed successfully. 
S_FALSEUnknown error occurred. 
E_OUTOFMEMORYThere is not enough memory in this process to  
satisfy the request. 
E_FAILUnspecified error. 
E_INVALIDARGOne or more arguments are invalid. 
E_UNEXPECTEDUnexpected event occurred in this function. 
 
Author: 
 
    Chris Dudley (cdudley) 2/22/1997 
 
--*/ 
 
HRESULT CSCardNewInterface::FinalRelease() 
{ 
// Locals. 
HRESULT hresult = S_OK; 
 
try { 
// Release interface completely!!  
if (m_pUnkISCardISO7816 != NULL) 
while (m_pUnkISCardISO7816->Release()>0); 
} 
 
catch (...) { 
} 
 
return (hresult); 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// 
// ISupportsErrorInfo Methods 
// 
 
/*++ 
 
CSCardNewInterface::InterfaceSupportsErrorInfo: 
 
    This routine retrieves a IErrorInfo interface for this object. 
 
Arguments: 
 
    riid - Interface ID. 
 
Return Value: 
 
    A HRESULT value indicating the status of the requested action. 
 
ReturnMeaning 
============= 
S_OKOperation completed successfully. 
S_FALSEUnknown error occurred. 
E_OUTOFMEMORYThere is not enough memory in this process to  
satisfy the request. 
E_FAILUnspecified error. 
E_INVALIDARGOne or more arguments are invalid. 
E_UNEXPECTEDUnexpected event occurred in this function. 
 
Author: 
 
    Chris Dudley (cdudley) 2/22/1997 
 
--*/ 
 
STDMETHODIMP CSCardNewInterface::InterfaceSupportsErrorInfo(REFIID riid) 
{ 
static const IID* arr[] =  
{ 
&IID_ISCardNewInterface, 
}; 
 
for (int i=0;i<sizeof(arr)/sizeof(arr[0]);i++) 
{ 
if (InlineIsEqualGUID(*arr[i],riid)) 
return S_OK; 
} 
return S_FALSE; 
} 
 
 
///////////////////////////////////////////////////////////////////////////// 
// 
// ISCardNewInterface Methods 
// 
 
/*++ 
 
CSCardNewInterface::NewInterface: 
 
This method implements some new interface. 
 
Arguments: 
 
wParameters - P1 and P2 encapsulated 
 
dwLength - Length of reply 
 
pParam - IByteBuffer (a.k.a. IStream)  
 
ppCmd - pointer->pointer->ISCardCmd interface  
 
Return Value: 
 
    A HRESULT value indicating the status of the requested action. 
 
ReturnMeaning 
============= 
S_OKOperation completed successfully. 
S_FALSEUnknown error occurred. 
E_OUTOFMEMORYThere is not enough memory in this process to  
satisfy the request. 
E_FAILUnspecified error. 
E_INVALIDARGOne or more arguments are invalid. 
E_UNEXPECTEDUnexpected event occurred in this function. 
 
Author: 
 
    Chris Dudley (cdudley) 2/22/1997 
 
Notes: 
 
--*/ 
HRESULT CSCardNewInterface::NewInterface(WORD wParameters,// =0 
DWORD dwLength,// =0 
LPBYTEBUFFER pParam, 
LPSCARDCMD *ppCmd) 
{ 
// Locals 
HRESULThresult = S_OK; 
 
try { 
// Check parameters... 
if ( (pParam == NULL) || (ppCmd == NULL ) ) 
throw ( (HRESULT) E_FAIL ); 
 
// ToDo: Build a new command and return 
// Example: 
//hresult = (*ppCmd)->BuildCmd(m_byClassId,  
//(BYTE) INS_SOME_NEW_INSTRUCTION), 
//(BYTE) HIBYTE(wParameters)),// P1 
//(BYTE) LOBYTE(wParameters)),// P2 
//pParam,// P3+data 
//&dwLength);// Le 
//if (FAILED(hresult)) 
//throw (hresult); 
} 
 
catch (HRESULT hr) { 
hresult = hr; 
TRACE_CATCH(_T("NewInterface"),hr); 
} 
 
catch (...) { 
hresult = (HRESULT) E_UNEXPECTED; 
TRACE_CATCH_UNKNOWN(_T("NewInterface")); 
} 
 
return hresult; 
}