winscard_clnt.c File Reference

This handles smartcard reader communications and forwarding requests over message queues. More...

#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/un.h>
#include <errno.h>
#include "misc.h"
#include "pcsclite.h"
#include "winscard.h"
#include "debug.h"
#include "thread_generic.h"
#include "readerfactory.h"
#include "eventhandler.h"
#include "sys_generic.h"
#include "winscard_msg.h"

Go to the source code of this file.

Data Structures

struct  _psChannelMap
 Represents an Application Context Channel. More...
struct  _psContextMap
 Represents the an Application Context on the Client side. More...

Defines

#define SCARD_PROTOCOL_ANY_OLD   0x1000
 used for backward compatibility
#define min(a, b)   (((a) < (b)) ? (a) : (b))
#define TRUE   1
#define FALSE   0
#define PROFILE_START
#define PROFILE_END

Typedefs

typedef _psChannelMap CHANNEL_MAP
typedef _psChannelMapPCHANNEL_MAP

Functions

static LONG SCardAddContext (SCARDCONTEXT hContext, DWORD dwClientID)
 Adds an Application Context to the vector psContextMap.
static LONG SCardGetContextIndice (SCARDCONTEXT hContext)
 Get the index from the Application Context vector psContextMap for the passed context.
static LONG SCardGetContextIndiceTH (SCARDCONTEXT hContext)
 Get the index from the Application Context vector psContextMap for the passed context.
static LONG SCardRemoveContext (SCARDCONTEXT hContext)
 Removes an Application Context from a control vector.
static LONG SCardAddHandle (SCARDHANDLE, DWORD, LPSTR)
static LONG SCardGetIndicesFromHandle (SCARDHANDLE, PDWORD, PDWORD)
static LONG SCardGetIndicesFromHandleTH (SCARDHANDLE, PDWORD, PDWORD)
static LONG SCardRemoveHandle (SCARDHANDLE)
static LONG SCardGetSetAttrib (SCARDHANDLE hCard, int command, DWORD dwAttrId, LPBYTE pbAttr, LPDWORD pcbAttrLen)
static LONG SCardCheckDaemonAvailability (void)
 Checks if the Server is running.
static LONG SCardLockThread (void)
 This function locks a mutex so another thread must wait to use this function.
static LONG SCardUnlockThread (void)
 This function unlocks a mutex so another thread may use the client.
static LONG SCardEstablishContextTH (DWORD dwScope, LPCVOID pvReserved1, LPCVOID pvReserved2, LPSCARDCONTEXT phContext)
 Creates a communication context to the PC/SC Resource Manager.
LONG SCardEstablishContext (DWORD dwScope, LPCVOID pvReserved1, LPCVOID pvReserved2, LPSCARDCONTEXT phContext)
 Creates an Application Context for a client.
LONG SCardReleaseContext (SCARDCONTEXT hContext)
 This function destroys a communication context to the PC/SC Resource Manager.
LONG SCardSetTimeout (SCARDCONTEXT hContext, DWORD dwTimeout)
LONG SCardConnect (SCARDCONTEXT hContext, LPCSTR szReader, DWORD dwShareMode, DWORD dwPreferredProtocols, LPSCARDHANDLE phCard, LPDWORD pdwActiveProtocol)
 This function establishes a connection to the friendly name of the reader specified in szReader.
LONG SCardReconnect (SCARDHANDLE hCard, DWORD dwShareMode, DWORD dwPreferredProtocols, DWORD dwInitialization, LPDWORD pdwActiveProtocol)
 This function reestablishes a connection to a reader that was previously connected to using SCardConnect().
LONG SCardDisconnect (SCARDHANDLE hCard, DWORD dwDisposition)
 This function terminates a connection to the connection made through SCardConnect().
LONG SCardBeginTransaction (SCARDHANDLE hCard)
 This function establishes a temporary exclusive access mode for doing a series of commands or transaction.
LONG SCardEndTransaction (SCARDHANDLE hCard, DWORD dwDisposition)
 This function ends a previously begun transaction.
LONG SCardCancelTransaction (SCARDHANDLE hCard)
LONG SCardStatus (SCARDHANDLE hCard, LPSTR mszReaderNames, LPDWORD pcchReaderLen, LPDWORD pdwState, LPDWORD pdwProtocol, LPBYTE pbAtr, LPDWORD pcbAtrLen)
 This function returns the current status of the reader connected to by hCard.
LONG SCardGetStatusChange (SCARDCONTEXT hContext, DWORD dwTimeout, LPSCARD_READERSTATE_A rgReaderStates, DWORD cReaders)
 This function receives a structure or list of structures containing reader names.
LONG SCardControl (SCARDHANDLE hCard, DWORD dwControlCode, LPCVOID pbSendBuffer, DWORD cbSendLength, LPVOID pbRecvBuffer, DWORD cbRecvLength, LPDWORD lpBytesReturned)
 This function sends a command directly to the IFD Handler to be processed by the reader.
LONG SCardGetAttrib (SCARDHANDLE hCard, DWORD dwAttrId, LPBYTE pbAttr, LPDWORD pcbAttrLen)
 This function get an attribute from the IFD Handler.
LONG SCardSetAttrib (SCARDHANDLE hCard, DWORD dwAttrId, LPCBYTE pbAttr, DWORD cbAttrLen)
 This function set an attribute of the IFD Handler.
LONG SCardTransmit (SCARDHANDLE hCard, LPCSCARD_IO_REQUEST pioSendPci, LPCBYTE pbSendBuffer, DWORD cbSendLength, LPSCARD_IO_REQUEST pioRecvPci, LPBYTE pbRecvBuffer, LPDWORD pcbRecvLength)
 This function sends an APDU to the smart card contained in the reader connected to by SCardConnect().
LONG SCardListReaders (SCARDCONTEXT hContext, LPCSTR mszGroups, LPSTR mszReaders, LPDWORD pcchReaders)
 This function returns a list of currently available readers on the system.
LONG SCardListReaderGroups (SCARDCONTEXT hContext, LPSTR mszGroups, LPDWORD pcchGroups)
 This function returns a list of currently available reader groups on the system.
LONG SCardCancel (SCARDCONTEXT hContext)
 This function cancels all pending blocking requests on the SCardGetStatusChange() function.
LONG SCardIsValidContext (SCARDCONTEXT hContext)
 check if a SCARDCONTEXT is valid.
void DESTRUCTOR SCardUnload (void)
 free resources allocated by the library You _shall_ call this function if you use dlopen/dlclose to load/unload the library.

Variables

static struct _psContextMap psContextMap [PCSCLITE_MAX_APPLICATION_CONTEXTS]
 Represents the an Application Context on the Client side.
static short isExecuted = 0
 Make sure the initialization code is executed only once.
static int mapAddr = 0
 Memory mapped address used to read status information about the readers.
static PCSCLITE_MUTEX clientMutex = PTHREAD_MUTEX_INITIALIZER
 Ensure that some functions be accessed in thread-safe mode.
static PREADER_STATE readerStates [PCSCLITE_MAX_READERS_CONTEXTS]
 Pointers to a memory mapped area used to read status information about the readers.
PCSC_API SCARD_IO_REQUEST g_rgSCardT0Pci = { SCARD_PROTOCOL_T0, 8 }
PCSC_API SCARD_IO_REQUEST g_rgSCardT1Pci = { SCARD_PROTOCOL_T1, 8 }
PCSC_API SCARD_IO_REQUEST g_rgSCardRawPci = { SCARD_PROTOCOL_RAW, 8 }


Detailed Description

This handles smartcard reader communications and forwarding requests over message queues.

Here is exposed the API for client applications.

Definition in file winscard_clnt.c.


Function Documentation

static LONG SCardAddContext ( SCARDCONTEXT  hContext,
DWORD  dwClientID 
) [static]

Adds an Application Context to the vector psContextMap.

Parameters:
[in] hContext Application Context ID.
[in] dwClientID Client connection ID.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Success (SCARD_S_SUCCESS)
SCARD_E_NO_MEMORY There is no free slot to store hContext (SCARD_E_NO_MEMORY)

Definition at line 3119 of file winscard_clnt.c.

References BLOCK_STATUS_RESUME, _psContextMap::contextBlockStatus, _psContextMap::dwClientID, _psContextMap::mMutex, PCSCLITE_MAX_APPLICATION_CONTEXTS, PCSCLITE_MUTEX, psContextMap, SCARD_E_NO_MEMORY, SCARD_S_SUCCESS, and SYS_MutexInit().

Referenced by getNewContext(), and SCardEstablishContextTH().

LONG SCardBeginTransaction ( SCARDHANDLE  hCard  ) 

This function establishes a temporary exclusive access mode for doing a series of commands or transaction.

You might want to use this when you are selecting a few files and then writing a large file so you can make sure that another application will not change the current file. If another application has a lock on this reader or this application is in SCARD_SHARE_EXCLUSIVE there will be no action taken.

Parameters:
[in] hCard Connection made from SCardConnect.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid hCard handle (SCARD_E_INVALID_HANDLE)
SCARD_E_SHARING_VIOLATION Someone else has exclusive rights (SCARD_E_SHARING_VIOLATION)
SCARD_E_READER_UNAVAILABLE The reader has been removed (SCARD_E_READER_UNAVAILABLE)
Test:
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);
 rv = SCardBeginTransaction(hCard);
 ...
 / * Do some transmit commands * /

Definition at line 1017 of file winscard_clnt.c.

References rxSharedSegment::data, begin_struct::hCard, PCSCLITE_CLIENT_ATTEMPTS, PCSCLITE_MAX_READERS_CONTEXTS, PROFILE_END, PROFILE_START, psContextMap, readerStates, begin_struct::rv, SCARD_BEGIN_TRANSACTION, SCARD_E_INVALID_HANDLE, SCARD_E_NO_SERVICE, SCARD_E_READER_UNAVAILABLE, SCARD_E_SHARING_VIOLATION, SCARD_F_COMM_ERROR, SCARD_S_SUCCESS, SCardCheckDaemonAvailability(), SCardGetIndicesFromHandle(), SHMClientRead(), SYS_MutexLock(), SYS_MutexUnLock(), SYS_RandomInt(), SYS_USleep(), and WrapSHMWrite().

LONG SCardCancel ( SCARDCONTEXT  hContext  ) 

This function cancels all pending blocking requests on the SCardGetStatusChange() function.

Parameters:
[in] hContext Connection context to the PC/SC Resource Manager.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid hContext handle (SCARD_E_INVALID_HANDLE)
Test:
 SCARDCONTEXT hContext;
 DWORD cReaders;
 SCARD_READERSTATE rgReaderStates;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rgReaderStates.szReader = strdup("Reader X");
 rgReaderStates.dwCurrentState = SCARD_STATE_EMPTY;
 ...
 / * Spawn off thread for following function * /
 ...
 rv = SCardGetStatusChange(hContext, 0, rgReaderStates, cReaders);
 rv = SCardCancel(hContext);

Definition at line 3037 of file winscard_clnt.c.

References BLOCK_STATUS_RESUME, _psContextMap::contextBlockStatus, PROFILE_END, PROFILE_START, psContextMap, SCARD_E_INVALID_HANDLE, SCARD_S_SUCCESS, and SCardGetContextIndice().

LONG SCardCancelTransaction ( SCARDHANDLE  hCard  ) 

Deprecated:
This function is not in Microsoft(R) WinSCard API and is deprecated in pcsc-lite API.

Definition at line 1258 of file winscard_clnt.c.

References rxSharedSegment::data, cancel_struct::hCard, PCSCLITE_CLIENT_ATTEMPTS, PCSCLITE_MAX_READERS_CONTEXTS, PROFILE_END, PROFILE_START, psContextMap, readerStates, SCARD_CANCEL_TRANSACTION, SCARD_E_INVALID_HANDLE, SCARD_E_NO_SERVICE, SCARD_E_READER_UNAVAILABLE, SCARD_F_COMM_ERROR, SCARD_S_SUCCESS, SCardCheckDaemonAvailability(), SCardGetIndicesFromHandle(), SHMClientRead(), SYS_MutexLock(), SYS_MutexUnLock(), and WrapSHMWrite().

static LONG SCardCheckDaemonAvailability ( void   )  [static]

Checks if the Server is running.

Returns:
Error code.
Return values:
SCARD_S_SUCCESS Server is running (SCARD_S_SUCCESS)
SCARD_E_NO_SERVICE Server is not running (SCARD_E_NO_SERVICE)

Definition at line 3340 of file winscard_clnt.c.

References Log1, PCSC_LOG_ERROR, PCSCLITE_PUBSHM_FILE, SCARD_E_NO_SERVICE, SCARD_S_SUCCESS, and SYS_Stat().

Referenced by SCardBeginTransaction(), SCardCancelTransaction(), SCardConnect(), SCardControl(), SCardDisconnect(), SCardEndTransaction(), SCardEstablishContextTH(), SCardGetSetAttrib(), SCardGetStatusChange(), SCardListReaderGroups(), SCardListReaders(), SCardReconnect(), SCardReleaseContext(), SCardStatus(), and SCardTransmit().

LONG SCardConnect ( SCARDCONTEXT  hContext,
LPCSTR  szReader,
DWORD  dwShareMode,
DWORD  dwPreferredProtocols,
LPSCARDHANDLE  phCard,
LPDWORD  pdwActiveProtocol 
)

This function establishes a connection to the friendly name of the reader specified in szReader.

The first connection will power up and perform a reset on the card.

Parameters:
[in] hContext Connection context to the PC/SC Resource Manager.
[in] szReader Reader name to connect to.
[in] dwShareMode Mode of connection type: exclusive or shared.
[in] dwPreferredProtocols Desired protocol use. dwPreferredProtocols is a bit mask of acceptable protocols for the connection. You can use (SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1) if you do not have a preferred protocol.
[out] phCard Handle to this connection.
[out] pdwActiveProtocol Established protocol to this connection.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid hContext handle (SCARD_E_INVALID_HANDLE)
SCARD_E_INVALID_VALUE Invalid sharing mode, requested protocol, or reader name (SCARD_E_INVALID_VALUE)
SCARD_E_NOT_READY Could not allocate the desired port (SCARD_E_NOT_READY)
SCARD_E_READER_UNAVAILABLE Could not power up the reader or card (SCARD_E_READER_UNAVAILABLE)
SCARD_E_SHARING_VIOLATION Someone else has exclusive rights (SCARD_E_SHARING_VIOLATION)
SCARD_E_UNSUPPORTED_FEATURE Protocol not supported (SCARD_E_UNSUPPORTED_FEATURE)
Test:
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);

Definition at line 622 of file winscard_clnt.c.

References rxSharedSegment::data, connect_struct::dwPreferredProtocols, connect_struct::dwShareMode, connect_struct::hContext, MAX_READERNAME, PCSCLITE_CLIENT_ATTEMPTS, connect_struct::pdwActiveProtocol, connect_struct::phCard, PROFILE_END, PROFILE_START, psContextMap, SCARD_CONNECT, SCARD_E_INVALID_HANDLE, SCARD_E_INVALID_PARAMETER, SCARD_E_INVALID_VALUE, SCARD_E_NO_SERVICE, SCARD_E_UNKNOWN_READER, SCARD_F_COMM_ERROR, SCARD_PROTOCOL_ANY_OLD, SCARD_PROTOCOL_RAW, SCARD_PROTOCOL_T0, SCARD_PROTOCOL_T1, SCARD_S_SUCCESS, SCardAddHandle(), SCardCheckDaemonAvailability(), SCardGetContextIndice(), SHMClientRead(), SYS_MutexLock(), SYS_MutexUnLock(), connect_struct::szReader, and WrapSHMWrite().

LONG SCardControl ( SCARDHANDLE  hCard,
DWORD  dwControlCode,
LPCVOID  pbSendBuffer,
DWORD  cbSendLength,
LPVOID  pbRecvBuffer,
DWORD  cbRecvLength,
LPDWORD  lpBytesReturned 
)

This function sends a command directly to the IFD Handler to be processed by the reader.

This is useful for creating client side reader drivers for functions like PIN pads, biometrics, or other extensions to the normal smart card reader that are not normally handled by PC/SC.

Note:
the API of this function changed. In pcsc-lite 1.2.0 and before the API was not Windows(R) PC/SC compatible. This has been corrected.
Parameters:
[in] hCard Connection made from SCardConnect.
[in] dwControlCode Control code for the operation.
Click here for a list of supported commands by some drivers.
[in] pbSendBuffer Command to send to the reader.
[in] cbSendLength Length of the command.
[out] pbRecvBuffer Response from the reader.
[in] cbRecvLength Length of the response buffer.
[out] lpBytesReturned Length of the response.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_NOT_TRANSACTED Data exchange not successful (SCARD_E_NOT_TRANSACTED)
SCARD_E_INVALID_HANDLE Invalid hCard handle (SCARD_E_INVALID_HANDLE)
SCARD_E_INVALID_VALUE Invalid value was presented (SCARD_E_INVALID_VALUE)
SCARD_E_READER_UNAVAILABLE The reader has been removed(SCARD_E_READER_UNAVAILABLE)
SCARD_W_RESET_CARD The card has been reset by another application (SCARD_W_RESET_CARD)
SCARD_W_REMOVED_CARD The card has been removed from the reader(SCARD_W_REMOVED_CARD)
Test:
 LONG rv;
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol, dwSendLength, dwRecvLength;
 BYTE pbRecvBuffer[10];
 BYTE pbSendBuffer[] = { 0x06, 0x00, 0x0A, 0x01, 0x01, 0x10 0x00 };
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED, SCARD_PROTOCOL_RAW &hCard, &dwActiveProtocol);
 dwSendLength = sizeof(pbSendBuffer);
 dwRecvLength = sizeof(pbRecvBuffer);
 rv = SCardControl(hCard, 0x42000001, pbSendBuffer, dwSendLength, pbRecvBuffer, sizeof(pbRecvBuffer), &dwRecvLength);

Definition at line 2152 of file winscard_clnt.c.

References control_struct::cbRecvLength, control_struct_extended::cbRecvLength, control_struct::cbSendLength, control_struct_extended::cbSendLength, rxSharedSegment::data, control_struct_extended::data, _psContextMap::dwClientID, control_struct::dwControlCode, control_struct_extended::dwControlCode, control_struct::hCard, control_struct_extended::hCard, MAX_BUFFER_SIZE, MAX_BUFFER_SIZE_EXTENDED, control_struct::pbSendBuffer, PCSCLITE_CLIENT_ATTEMPTS, PCSCLITE_MAX_MESSAGE_SIZE, PROFILE_END, PROFILE_START, psContextMap, readerStates, SCARD_CONTROL, SCARD_CONTROL_EXTENDED, SCARD_E_INSUFFICIENT_BUFFER, SCARD_E_INVALID_HANDLE, SCARD_E_NO_SERVICE, SCARD_E_READER_UNAVAILABLE, SCARD_F_COMM_ERROR, SCARD_S_SUCCESS, SCardCheckDaemonAvailability(), SCardGetIndicesFromHandle(), SHMClientRead(), SHMMessageReceive(), control_struct_extended::size, SYS_MutexLock(), SYS_MutexUnLock(), and WrapSHMWrite().

LONG SCardDisconnect ( SCARDHANDLE  hCard,
DWORD  dwDisposition 
)

This function terminates a connection to the connection made through SCardConnect().

dwDisposition can have the following values:

Parameters:
[in] hCard Connection made from SCardConnect.
[in] dwDisposition Reader function to execute.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful(SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid hCard handle (SCARD_E_INVALID_HANDLE)
SCARD_E_INVALID_VALUE - Invalid dwDisposition (SCARD_E_INVALID_VALUE)
Test:
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);
 rv = SCardDisconnect(hCard, SCARD_UNPOWER_CARD);

Definition at line 919 of file winscard_clnt.c.

References rxSharedSegment::data, disconnect_struct::dwDisposition, disconnect_struct::hCard, PCSCLITE_CLIENT_ATTEMPTS, PROFILE_END, PROFILE_START, psContextMap, SCARD_DISCONNECT, SCARD_E_INVALID_HANDLE, SCARD_E_INVALID_VALUE, SCARD_E_NO_SERVICE, SCARD_EJECT_CARD, SCARD_F_COMM_ERROR, SCARD_LEAVE_CARD, SCARD_RESET_CARD, SCARD_S_SUCCESS, SCARD_UNPOWER_CARD, SCardCheckDaemonAvailability(), SCardGetIndicesFromHandle(), SCardRemoveHandle(), SHMClientRead(), SYS_MutexLock(), SYS_MutexUnLock(), and WrapSHMWrite().

LONG SCardEndTransaction ( SCARDHANDLE  hCard,
DWORD  dwDisposition 
)

This function ends a previously begun transaction.

The calling application must be the owner of the previously begun transaction or an error will occur.

Parameters:
[in] hCard Connection made from SCardConnect.
[in] dwDisposition Action to be taken on the reader. The disposition action is not currently used in this release.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid hCard handle (SCARD_E_INVALID_HANDLE)
SCARD_E_SHARING_VIOLATION Someone else has exclusive rights (SCARD_E_SHARING_VIOLATION)
SCARD_E_READER_UNAVAILABLE The reader has been removed (SCARD_E_READER_UNAVAILABLE)
Test:
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);
 rv = SCardBeginTransaction(hCard);
 ...
 / * Do some transmit commands * /
 ...
 rv = SCardEndTransaction(hCard, SCARD_LEAVE_CARD);

Definition at line 1163 of file winscard_clnt.c.

References rxSharedSegment::data, end_struct::dwDisposition, end_struct::hCard, PCSCLITE_CLIENT_ATTEMPTS, PCSCLITE_MAX_READERS_CONTEXTS, PROFILE_END, PROFILE_START, psContextMap, readerStates, SCARD_E_INVALID_HANDLE, SCARD_E_INVALID_VALUE, SCARD_E_NO_SERVICE, SCARD_E_READER_UNAVAILABLE, SCARD_EJECT_CARD, SCARD_END_TRANSACTION, SCARD_F_COMM_ERROR, SCARD_LEAVE_CARD, SCARD_RESET_CARD, SCARD_S_SUCCESS, SCARD_UNPOWER_CARD, SCardCheckDaemonAvailability(), SCardGetIndicesFromHandle(), SHMClientRead(), SYS_MutexLock(), SYS_MutexUnLock(), SYS_RandomInt(), SYS_USleep(), and WrapSHMWrite().

LONG SCardEstablishContext ( DWORD  dwScope,
LPCVOID  pvReserved1,
LPCVOID  pvReserved2,
LPSCARDCONTEXT  phContext 
)

Creates an Application Context for a client.

This must be the first function called in a PC/SC application. This is a thread-safe wrapper to the function SCardEstablishContextTH().

Parameters:
[in] dwScope Scope of the establishment. This can either be a local or remote connection.
[in] pvReserved1 Reserved for future use. Can be used for remote connection.
[in] pvReserved2 Reserved for future use.
[out] phContext Returned Application Context.
Returns:
Connection status.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_NO_SERVICE The server is not runing (SCARD_E_NO_SERVICE)
SCARD_E_INVALID_VALUE Invalid scope type passed (SCARD_E_INVALID_VALUE )
SCARD_E_INVALID_PARAMETER phContext is null (SCARD_E_INVALID_PARAMETER)
Test:
 SCARDCONTEXT hContext;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);

Definition at line 237 of file winscard_clnt.c.

References PROFILE_END, PROFILE_START, SCardEstablishContextTH(), SCardLockThread(), and SCardUnlockThread().

static LONG SCardEstablishContextTH ( DWORD  dwScope,
LPCVOID  pvReserved1,
LPCVOID  pvReserved2,
LPSCARDCONTEXT  phContext 
) [static]

Creates a communication context to the PC/SC Resource Manager.

This function shuld not be called directly. Instead, the thread-safe function SCardEstablishContext() should be called.

Parameters:
[in] dwScope Scope of the establishment. This can either be a local or remote connection.
[in] pvReserved1 Reserved for future use. Can be used for remote connection.
[in] pvReserved2 Reserved for future use.
[out] phContext Returned reference to this connection.
Returns:
Connection status.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_NO_SERVICE The server is not runing (SCARD_E_NO_SERVICE)
SCARD_E_INVALID_PARAMETER phContext is null. (SCARD_E_INVALID_PARAMETER)
SCARD_E_INVALID_VALUE Invalid scope type passed (SCARD_E_INVALID_VALUE)

Definition at line 279 of file winscard_clnt.c.

References BLOCK_STATUS_RESUME, CMD_VERSION, _psContextMap::contextBlockStatus, rxSharedSegment::data, _psContextMap::dwClientID, establish_struct::dwScope, _psContextMap::hContext, Log1, Log2, Log3, version_struct::major, version_struct::minor, _psContextMap::mMutex, PCSC_LOG_CRITICAL, PCSC_LOG_INFO, PCSCLITE_CLIENT_ATTEMPTS, PCSCLITE_MAX_APPLICATION_CONTEXT_CHANNELS, PCSCLITE_MAX_APPLICATION_CONTEXTS, PCSCLITE_MAX_READERS_CONTEXTS, PCSCLITE_MCLIENT_ATTEMPTS, PCSCLITE_PUBSHM_FILE, establish_struct::phContext, PROTOCOL_VERSION_MAJOR, PROTOCOL_VERSION_MINOR, _psContextMap::psChannelMap, psContextMap, _psChannelMap::readerName, readerStates, establish_struct::rv, version_struct::rv, SCARD_E_INVALID_PARAMETER, SCARD_E_INVALID_VALUE, SCARD_E_NO_MEMORY, SCARD_E_NO_SERVICE, SCARD_ESTABLISH_CONTEXT, SCARD_F_COMM_ERROR, SCARD_F_INTERNAL_ERROR, SCARD_S_SUCCESS, SCARD_SCOPE_GLOBAL, SCARD_SCOPE_SYSTEM, SCARD_SCOPE_TERMINAL, SCARD_SCOPE_USER, SCardAddContext(), SCardCheckDaemonAvailability(), SHMClientRead(), SHMClientSetupSession(), SHMMessageReceive(), SHMMessageSend(), SYS_CloseFile(), SYS_GetGID(), SYS_GetPageSize(), SYS_GetUID(), SYS_Initialize(), SYS_OpenFile(), SYS_PublicMemoryMap(), and WrapSHMWrite().

Referenced by SCardEstablishContext().

LONG SCardGetAttrib ( SCARDHANDLE  hCard,
DWORD  dwAttrId,
LPBYTE  pbAttr,
LPDWORD  pcbAttrLen 
)

This function get an attribute from the IFD Handler.

The list of possible attributes is available in the file pcsclite.h.

Parameters:
[in] hCard Connection made from SCardConnect().
[in] dwAttrId Identifier for the attribute to get.
Not all the dwAttrId values listed above may be implemented in the IFD Handler you are using. And some dwAttrId values not listed here may be implemented.

Parameters:
[out] pbAttr Pointer to a buffer that receives the attribute.
pcbAttrLen [inout] Length of the pbAttr buffer in bytes.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_NOT_TRANSACTED Data exchange not successful (SCARD_E_NOT_TRANSACTED)
SCARD_E_INSUFFICIENT_BUFFER Reader buffer not large enough (SCARD_E_INSUFFICIENT_BUFFER)
Test:
 LONG rv;
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol;
 unsigned char pbAtr[MAX_ATR_SIZE];
 DWORD dwAtrLen;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED,
                           SCARD_PROTOCOL_RAW &hCard, &dwActiveProtocol);
 rv = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, pbAtr, &dwAtrLen);

Definition at line 2406 of file winscard_clnt.c.

References MAX_BUFFER_SIZE, PROFILE_END, PROFILE_START, SCARD_E_INVALID_PARAMETER, SCARD_GET_ATTRIB, and SCardGetSetAttrib().

static LONG SCardGetContextIndice ( SCARDCONTEXT  hContext  )  [static]

Get the index from the Application Context vector psContextMap for the passed context.

This function is a thread-safe wrapper to the function SCardGetContextIndiceTH().

Parameters:
[in] hContext Application Context whose index will be find.
Returns:
Index corresponding to the Application Context or -1 if it is not found.

Definition at line 3151 of file winscard_clnt.c.

References SCardGetContextIndiceTH(), SCardLockThread(), and SCardUnlockThread().

Referenced by getNewContext(), getSessionForContext(), SCardCancel(), SCardCancelTH(), SCardConnect(), SCardConnectTH(), SCardGetStatusChange(), SCardIsValidContext(), SCardListReaderGroups(), SCardListReaderGroupsTH(), SCardListReaders(), SCardListReadersTH(), SCardReleaseContext(), and SCardRemoveContext().

static LONG SCardGetContextIndiceTH ( SCARDCONTEXT  hContext  )  [static]

Get the index from the Application Context vector psContextMap for the passed context.

This functions is not thread-safe and should not be called. Instead, call the function SCardGetContextIndice().

Parameters:
[in] hContext Application Context whose index will be find.
Returns:
Index corresponding to the Application Context or -1 if it is not found.

Definition at line 3174 of file winscard_clnt.c.

References PCSCLITE_MAX_APPLICATION_CONTEXTS, and psContextMap.

Referenced by SCardGetContextIndice(), and SCardRemoveContext().

LONG SCardGetStatusChange ( SCARDCONTEXT  hContext,
DWORD  dwTimeout,
LPSCARD_READERSTATE_A  rgReaderStates,
DWORD  cReaders 
)

This function receives a structure or list of structures containing reader names.

It then blocks for a change in state to occur on any of the OR'd values contained in dwCurrentState for a maximum blocking time of dwTimeout or forever if INFINITE is used.

The new event state will be contained in dwEventState. A status change might be a card insertion or removal event, a change in ATR, etc.

This function will block for reader availability if cReaders is equal to zero and rgReaderStates is NULL.

 typedef struct {
   LPCSTR szReader;          // Reader name
   LPVOID pvUserData;         // User defined data
   DWORD dwCurrentState;      // Current state of reader
   DWORD dwEventState;        // Reader state after a state change
   DWORD cbAtr;               // ATR Length, usually MAX_ATR_SIZE
   BYTE rgbAtr[MAX_ATR_SIZE]; // ATR Value
 } SCARD_READERSTATE;
 ...
 typedef SCARD_READERSTATE *PSCARD_READERSTATE, **LPSCARD_READERSTATE;
 ...

Value of dwCurrentState and dwEventState:

Parameters:
[in] hContext Connection context to the PC/SC Resource Manager.
[in] dwTimeout Maximum waiting time (in miliseconds) for status change, zero (or INFINITE) for infinite.
rgReaderStates [inout] Structures of readers with current states.
[in] cReaders Number of structures.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_VALUE Invalid States, reader name, etc (SCARD_E_INVALID_VALUE)
SCARD_E_INVALID_HANDLE Invalid hContext handle (SCARD_E_INVALID_HANDLE)
SCARD_E_READER_UNAVAILABLE The reader is unavailable (SCARD_E_READER_UNAVAILABLE)
Test:
 SCARDCONTEXT hContext;
 SCARD_READERSTATE_A rgReaderStates[1];
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 ...
 rgReaderStates[0].szReader = "Reader X";
 rgReaderStates[0].dwCurrentState = SCARD_STATE_UNAWARE;
 ...
 rv = SCardGetStatusChange(hContext, INFINITE, rgReaderStates, 1);
 printf("reader state: 0x%04X\n", rgReaderStates[0].dwEventState);

Definition at line 1613 of file winscard_clnt.c.

References INFINITE, PCSCLITE_MAX_READERS_CONTEXTS, PCSCLITE_STATUS_WAIT, PROFILE_END, PROFILE_START, psContextMap, readerStates, SCARD_E_INVALID_HANDLE, SCARD_E_INVALID_PARAMETER, SCARD_E_INVALID_VALUE, SCARD_E_NO_SERVICE, SCARD_E_READER_UNAVAILABLE, SCARD_E_TIMEOUT, SCARD_S_SUCCESS, SCardCheckDaemonAvailability(), SCardGetContextIndice(), SYS_MutexLock(), SYS_MutexUnLock(), SYS_USleep(), and SCARD_READERSTATE_A::szReader.

LONG SCardIsValidContext ( SCARDCONTEXT  hContext  ) 

check if a SCARDCONTEXT is valid.

Call this function to determine whether a smart card context handle is still valid. After a smart card context handle has been set by SCardEstablishContext, it may become not valid if the resource manager service has been shut down.

Parameters:
[in] hContext Connection context to the PC/SC Resource Manager.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid Handle (SCARD_E_INVALID_HANDLE)
Test:
 SCARDCONTEXT hContext;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardIsValidContext(hContext);

Definition at line 3082 of file winscard_clnt.c.

References PROFILE_END, PROFILE_START, SCARD_E_INVALID_HANDLE, SCARD_S_SUCCESS, and SCardGetContextIndice().

Referenced by main().

LONG SCardListReaderGroups ( SCARDCONTEXT  hContext,
LPSTR  mszGroups,
LPDWORD  pcchGroups 
)

This function returns a list of currently available reader groups on the system.

mszGroups is a pointer to a character string that is allocated by the application. If the application sends mszGroups as NULL then this function will return the size of the buffer needed to allocate in pcchGroups.

The group names is a multi-string and separated by a nul character ('\0') and ended by a double nul character. "SCard$DefaultReaders\\0Group 2\\0\\0".

Parameters:
[in] hContext Connection context to the PC/SC Resource Manager.
[out] mszGroups List of groups to list readers.
pcchGroups [inout] Size of multi-string buffer including NULL's.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid Scope Handle (SCARD_E_INVALID_HANDLE)
SCARD_E_INSUFFICIENT_BUFFER Reader buffer not large enough (SCARD_E_INSUFFICIENT_BUFFER)
Test:
 SCARDCONTEXT hContext;
 LPSTR mszGroups;
 DWORD dwGroups;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardListReaderGroups(hContext, NULL, &dwGroups);
 mszGroups = malloc(sizeof(char)*dwGroups);
 rv = SCardListReaderGroups(hContext, mszGroups, &dwGroups);

Definition at line 2966 of file winscard_clnt.c.

References PROFILE_END, PROFILE_START, psContextMap, SCARD_E_INSUFFICIENT_BUFFER, SCARD_E_INVALID_HANDLE, SCARD_E_NO_SERVICE, SCARD_S_SUCCESS, SCardCheckDaemonAvailability(), SCardGetContextIndice(), SYS_MutexLock(), and SYS_MutexUnLock().

LONG SCardListReaders ( SCARDCONTEXT  hContext,
LPCSTR  mszGroups,
LPSTR  mszReaders,
LPDWORD  pcchReaders 
)

This function returns a list of currently available readers on the system.

mszReaders is a pointer to a character string that is allocated by the application. If the application sends mszGroups and mszReaders as NULL then this function will return the size of the buffer needed to allocate in pcchReaders.

Parameters:
[in] hContext Connection context to the PC/SC Resource Manager.
[in] mszGroups List of groups to list readers (not used).
[out] mszReaders Multi-string with list of readers.
pcchReaders [inout] Size of multi-string buffer including NULL's.
Returns:
Connection status.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid Scope Handle (SCARD_E_INVALID_HANDLE)
SCARD_E_INSUFFICIENT_BUFFER Reader buffer not large enough (SCARD_E_INSUFFICIENT_BUFFER)
Test:
 SCARDCONTEXT hContext;
 LPSTR mszReaders;
 DWORD dwReaders;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardListReaders(hContext, NULL, NULL, &dwReaders);
 mszReaders = malloc(sizeof(char)*dwReaders);
 rv = SCardListReaders(hContext, NULL, mszReaders, &dwReaders);

Definition at line 2862 of file winscard_clnt.c.

References PROFILE_END, PROFILE_START, psContextMap, readerStates, SCARD_E_INSUFFICIENT_BUFFER, SCARD_E_INVALID_HANDLE, SCARD_E_INVALID_PARAMETER, SCARD_E_NO_SERVICE, SCARD_S_SUCCESS, SCardCheckDaemonAvailability(), SCardGetContextIndice(), SYS_MutexLock(), and SYS_MutexUnLock().

static LONG SCardLockThread ( void   )  [inline, static]

This function locks a mutex so another thread must wait to use this function.

Wrapper to the function SYS_MutexLock().

Definition at line 3318 of file winscard_clnt.c.

References SYS_MutexLock().

Referenced by SCardBeginTransaction(), SCardCancel(), SCardCancelTransaction(), SCardConnect(), SCardDisconnect(), SCardEndTransaction(), SCardEstablishContext(), SCardGetContextIndice(), SCardGetIndicesFromHandle(), SCardGetStatusChange(), SCardListReaderGroups(), SCardListReaders(), SCardReconnect(), SCardReleaseContext(), SCardStatus(), and SCardTransmit().

LONG SCardReconnect ( SCARDHANDLE  hCard,
DWORD  dwShareMode,
DWORD  dwPreferredProtocols,
DWORD  dwInitialization,
LPDWORD  pdwActiveProtocol 
)

This function reestablishes a connection to a reader that was previously connected to using SCardConnect().

In a multi application environment it is possible for an application to reset the card in shared mode. When this occurs any other application trying to access certain commands will be returned the value SCARD_W_RESET_CARD. When this occurs SCardReconnect() must be called in order to acknowledge that the card was reset and allow it to change it's state accordingly.

Parameters:
[in] hCard Handle to a previous call to connect.
[in] dwShareMode Mode of connection type: exclusive/shared.
[in] dwPreferredProtocols Desired protocol use. dwPreferredProtocols is a bit mask of acceptable protocols for the connection. You can use (SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1) if you do not have a preferred protocol.
[in] dwInitialization Desired action taken on the card/reader.
[out] pdwActiveProtocol Established protocol to this connection.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid hCard handle (SCARD_E_INVALID_HANDLE)
SCARD_E_NOT_READY Could not allocate the desired port (SCARD_E_NOT_READY)
SCARD_E_INVALID_VALUE Invalid sharing mode, requested protocol, or reader name (SCARD_E_INVALID_VALUE)
SCARD_E_READER_UNAVAILABLE The reader has been removed (SCARD_E_READER_UNAVAILABLE)
SCARD_E_UNSUPPORTED_FEATURE Protocol not supported (SCARD_E_UNSUPPORTED_FEATURE)
SCARD_E_SHARING_VIOLATION Someone else has exclusive rights (SCARD_E_SHARING_VIOLATION)
Test:
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol, dwSendLength, dwRecvLength;
 LONG rv;
 BYTE pbRecvBuffer[10];
 BYTE pbSendBuffer[] = {0xC0, 0xA4, 0x00, 0x00, 0x02, 0x3F, 0x00};
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);
 ...
 dwSendLength = sizeof(pbSendBuffer);
 dwRecvLength = sizeof(pbRecvBuffer);
 rv = SCardTransmit(hCard, SCARD_PCI_T0, pbSendBuffer, dwSendLength, &pioRecvPci, pbRecvBuffer, &dwRecvLength);
 / * Card has been reset by another application * /
 if (rv == SCARD_W_RESET_CARD)
 {
   rv = SCardReconnect(hCard, SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, SCARD_RESET_CARD, &dwActiveProtocol);
 }

Definition at line 791 of file winscard_clnt.c.

References rxSharedSegment::data, reconnect_struct::dwInitialization, reconnect_struct::dwPreferredProtocols, reconnect_struct::dwShareMode, reconnect_struct::hCard, PCSCLITE_CLIENT_ATTEMPTS, PCSCLITE_MAX_READERS_CONTEXTS, reconnect_struct::pdwActiveProtocol, PROFILE_END, PROFILE_START, psContextMap, readerStates, SCARD_E_INVALID_HANDLE, SCARD_E_INVALID_PARAMETER, SCARD_E_INVALID_VALUE, SCARD_E_NO_SERVICE, SCARD_E_READER_UNAVAILABLE, SCARD_EJECT_CARD, SCARD_F_COMM_ERROR, SCARD_LEAVE_CARD, SCARD_PROTOCOL_ANY_OLD, SCARD_PROTOCOL_RAW, SCARD_PROTOCOL_T0, SCARD_PROTOCOL_T1, SCARD_RECONNECT, SCARD_RESET_CARD, SCARD_S_SUCCESS, SCARD_UNPOWER_CARD, SCardCheckDaemonAvailability(), SCardGetIndicesFromHandle(), SHMClientRead(), SYS_MutexLock(), SYS_MutexUnLock(), and WrapSHMWrite().

LONG SCardReleaseContext ( SCARDCONTEXT  hContext  ) 

This function destroys a communication context to the PC/SC Resource Manager.

This must be the last function called in a PC/SC application.

Parameters:
[in] hContext Connection context to be closed.
Returns:
Connection status.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
Test:
 SCARDCONTEXT hContext;
 LONG rv;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardReleaseContext(hContext);

Definition at line 491 of file winscard_clnt.c.

References rxSharedSegment::data, release_struct::hContext, PCSCLITE_CLIENT_ATTEMPTS, PCSCLITE_MCLIENT_ATTEMPTS, PROFILE_END, PROFILE_START, psContextMap, release_struct::rv, SCARD_E_INVALID_HANDLE, SCARD_E_NO_SERVICE, SCARD_F_COMM_ERROR, SCARD_RELEASE_CONTEXT, SCARD_S_SUCCESS, SCardCheckDaemonAvailability(), SCardGetContextIndice(), SCardLockThread(), SCardRemoveContext(), SCardUnlockThread(), SHMClientRead(), SYS_MutexLock(), SYS_MutexUnLock(), and WrapSHMWrite().

static LONG SCardRemoveContext ( SCARDCONTEXT  hContext  )  [static]

Removes an Application Context from a control vector.

Parameters:
[in] hContext Application Context to be removed.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Success (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE The context hContext was not found (SCARD_E_INVALID_HANDLE)

Definition at line 3199 of file winscard_clnt.c.

References BLOCK_STATUS_RESUME, _psContextMap::contextBlockStatus, _psContextMap::dwClientID, _psContextMap::hContext, _psContextMap::mMutex, PCSCLITE_MAX_APPLICATION_CONTEXT_CHANNELS, _psContextMap::psChannelMap, psContextMap, _psChannelMap::readerName, SCARD_E_INVALID_HANDLE, SCARD_S_SUCCESS, SCardGetContextIndiceTH(), and SHMClientCloseSession().

Referenced by SCardReleaseContext(), and SCardReleaseContextTH().

LONG SCardSetAttrib ( SCARDHANDLE  hCard,
DWORD  dwAttrId,
LPCBYTE  pbAttr,
DWORD  cbAttrLen 
)

This function set an attribute of the IFD Handler.

The list of attributes you can set is dependent on the IFD Handler you are using.

Parameters:
[in] hCard Connection made from SCardConnect().
[in] dwAttrId Identifier for the attribute to set.
[in] pbAttr Pointer to a buffer that receives the attribute.
[in] cbAttrLen Length of the pbAttr buffer in bytes.
Returns:
Error code
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_NOT_TRANSACTED Data exchange not successful (SCARD_E_NOT_TRANSACTED)
Test:
 LONG rv;
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol;
 unsigned char pbAtr[MAX_ATR_SIZE];
 DWORD dwAtrLen;
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED,
                   SCARD_PROTOCOL_RAW &hCard, &dwActiveProtocol);
 rv = SCardSetAttrib(hCard, 0x42000001, "\x12\x34\x56", 3);

Definition at line 2455 of file winscard_clnt.c.

References PROFILE_END, PROFILE_START, SCARD_E_INVALID_PARAMETER, SCARD_SET_ATTRIB, and SCardGetSetAttrib().

LONG SCardSetTimeout ( SCARDCONTEXT  hContext,
DWORD  dwTimeout 
)

Deprecated:
This function is not in Microsoft(R) WinSCard API and is deprecated in pcsc-lite API. The function does not do anything except returning SCARD_S_SUCCESS.
Parameters:
[in] hContext Connection context to the PC/SC Resource Manager.
[in] dwTimeout New timeout value.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)

Definition at line 563 of file winscard_clnt.c.

References SCARD_S_SUCCESS.

LONG SCardStatus ( SCARDHANDLE  hCard,
LPSTR  mszReaderNames,
LPDWORD  pcchReaderLen,
LPDWORD  pdwState,
LPDWORD  pdwProtocol,
LPBYTE  pbAtr,
LPDWORD  pcbAtrLen 
)

This function returns the current status of the reader connected to by hCard.

It's friendly name will be stored in szReaderName. pcchReaderLen will be the size of the allocated buffer for szReaderName, while pcbAtrLen will be the size of the allocated buffer for pbAtr. If either of these is too small, the function will return with SCARD_E_INSUFFICIENT_BUFFER and the necessary size in pcchReaderLen and pcbAtrLen. The current state, and protocol will be stored in pdwState and pdwProtocol respectively.

Parameters:
[in] hCard Connection made from SCardConnect.
mszReaderNames [inout] Friendly name of this reader.
pcchReaderLen [inout] Size of the szReaderName multistring.
[out] pdwState Current state of this reader. pdwState is a DWORD possibly OR'd with the following values:
  • SCARD_ABSENT - There is no card in the reader.
  • SCARD_PRESENT - There is a card in the reader, but it has not been moved into position for use.
  • SCARD_SWALLOWED - There is a card in the reader in position for use. The card is not powered.
  • SCARD_POWERED - Power is being provided to the card, but the reader driver is unaware of the mode of the card.
  • SCARD_NEGOTIABLE - The card has been reset and is awaiting PTS negotiation.
  • SCARD_SPECIFIC - The card has been reset and specific communication protocols have been established.
[out] pdwProtocol Current protocol of this reader.
[out] pbAtr Current ATR of a card in this reader.
[out] pcbAtrLen Length of ATR.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid hCard handle (SCARD_E_INVALID_HANDLE)
SCARD_E_INSUFFICIENT_BUFFER Not enough allocated memory for szReaderName or for pbAtr (SCARD_E_INSUFFICIENT_BUFFER)
SCARD_E_READER_UNAVAILABLE The reader has been removed (SCARD_E_READER_UNAVAILABLE)
Test:
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol;
 DWORD dwState, dwProtocol, dwAtrLen, dwReaderLen;
 BYTE pbAtr[MAX_ATR_SIZE];
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);
 ...
 dwAtrLen = sizeof(pbAtr);
 rv=SCardStatus(hCard, NULL, &dwReaderLen, &dwState, &dwProtocol, pbAtr, &dwAtrLen);

Definition at line 1385 of file winscard_clnt.c.

References rxSharedSegment::data, min, PCSCLITE_CLIENT_ATTEMPTS, PCSCLITE_MAX_READERS_CONTEXTS, PROFILE_END, PROFILE_START, _psContextMap::psChannelMap, psContextMap, _psChannelMap::readerName, readerStates, SCARD_E_INSUFFICIENT_BUFFER, SCARD_E_INVALID_HANDLE, SCARD_E_INVALID_PARAMETER, SCARD_E_NO_SERVICE, SCARD_E_READER_UNAVAILABLE, SCARD_F_COMM_ERROR, SCARD_S_SUCCESS, SCARD_STATUS, SCardCheckDaemonAvailability(), SCardGetIndicesFromHandle(), SHMClientRead(), SYS_MutexLock(), SYS_MutexUnLock(), and WrapSHMWrite().

LONG SCardTransmit ( SCARDHANDLE  hCard,
LPCSCARD_IO_REQUEST  pioSendPci,
LPCBYTE  pbSendBuffer,
DWORD  cbSendLength,
LPSCARD_IO_REQUEST  pioRecvPci,
LPBYTE  pbRecvBuffer,
LPDWORD  pcbRecvLength 
)

This function sends an APDU to the smart card contained in the reader connected to by SCardConnect().

The card responds from the APDU and stores this response in pbRecvBuffer and it's length in SpcbRecvLength. SSendPci and SRecvPci are structures containing the following:

 typedef struct {
    DWORD dwProtocol;    // SCARD_PROTOCOL_T0 or SCARD_PROTOCOL_T1
    DWORD cbPciLength;   // Length of this structure - not used
 } SCARD_IO_REQUEST;

Parameters:
[in] hCard Connection made from SCardConnect().
pioSendPci [inout] Structure of protocol information.
[in] pbSendBuffer APDU to send to the card.
[in] cbSendLength Length of the APDU.
pioRecvPci [inout] Structure of protocol information.
[out] pbRecvBuffer Response from the card.
pcbRecvLength [inout] Length of the response.
Returns:
Error code.
Return values:
SCARD_S_SUCCESS Successful (SCARD_S_SUCCESS)
SCARD_E_INVALID_HANDLE Invalid hCard handle (SCARD_E_INVALID_HANDLE)
SCARD_E_NOT_TRANSACTED APDU exchange not successful (SCARD_E_NOT_TRANSACTED)
SCARD_E_PROTO_MISMATCH Connect protocol is different than desired (SCARD_E_PROTO_MISMATCH)
SCARD_E_INVALID_VALUE Invalid Protocol, reader name, etc (SCARD_E_INVALID_VALUE)
SCARD_E_READER_UNAVAILABLE The reader has been removed (SCARD_E_READER_UNAVAILABLE)
SCARD_W_RESET_CARD The card has been reset by another application (SCARD_W_RESET_CARD)
SCARD_W_REMOVED_CARD The card has been removed from the reader (SCARD_W_REMOVED_CARD)
Test:
 LONG rv;
 SCARDCONTEXT hContext;
 SCARDHANDLE hCard;
 DWORD dwActiveProtocol, dwSendLength, dwRecvLength;
 SCARD_IO_REQUEST pioRecvPci;
 BYTE pbRecvBuffer[10];
 BYTE pbSendBuffer[] = { 0xC0, 0xA4, 0x00, 0x00, 0x02, 0x3F, 0x00 };
 ...
 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
 rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);
 dwSendLength = sizeof(pbSendBuffer);
 dwRecvLength = sizeof(pbRecvBuffer);
 rv = SCardTransmit(hCard, SCARD_PCI_T0, pbSendBuffer, dwSendLength, &pioRecvPci, pbRecvBuffer, &dwRecvLength);

Definition at line 2623 of file winscard_clnt.c.

References transmit_struct::cbSendLength, transmit_struct_extended::cbSendLength, rxSharedSegment::data, transmit_struct_extended::data, _psContextMap::dwClientID, _SCARD_IO_REQUEST::dwProtocol, transmit_struct::hCard, transmit_struct_extended::hCard, MAX_BUFFER_SIZE, MAX_BUFFER_SIZE_EXTENDED, transmit_struct::pbSendBuffer, transmit_struct::pcbRecvLength, transmit_struct_extended::pcbRecvLength, PCSCLITE_CLIENT_ATTEMPTS, PCSCLITE_MAX_MESSAGE_SIZE, transmit_struct::pioRecvPci, transmit_struct_extended::pioRecvPci, transmit_struct::pioSendPci, transmit_struct_extended::pioSendPci, PROFILE_END, PROFILE_START, psContextMap, readerStates, SCARD_E_INSUFFICIENT_BUFFER, SCARD_E_INVALID_HANDLE, SCARD_E_INVALID_PARAMETER, SCARD_E_NO_SERVICE, SCARD_E_READER_UNAVAILABLE, SCARD_F_COMM_ERROR, SCARD_PROTOCOL_ANY, SCARD_S_SUCCESS, SCARD_TRANSMIT, SCARD_TRANSMIT_EXTENDED, SCardCheckDaemonAvailability(), SCardGetIndicesFromHandle(), SHMClientRead(), SHMMessageReceive(), transmit_struct_extended::size, SYS_MutexLock(), SYS_MutexUnLock(), and WrapSHMWrite().

void DESTRUCTOR SCardUnload ( void   ) 

free resources allocated by the library You _shall_ call this function if you use dlopen/dlclose to load/unload the library.

Otherwise you will exhaust the ressources available.

Definition at line 3365 of file winscard_clnt.c.

References PCSCLITE_MAX_APPLICATION_CONTEXT_CHANNELS, readerStates, SYS_CloseFile(), and SYS_PublicMemoryUnmap().

static LONG SCardUnlockThread ( void   )  [inline, static]

This function unlocks a mutex so another thread may use the client.

Wrapper to the function SYS_MutexUnLock().

Definition at line 3328 of file winscard_clnt.c.

References SYS_MutexUnLock().

Referenced by SCardBeginTransaction(), SCardCancel(), SCardCancelTransaction(), SCardConnect(), SCardDisconnect(), SCardEndTransaction(), SCardEstablishContext(), SCardGetContextIndice(), SCardGetIndicesFromHandle(), SCardGetStatusChange(), SCardListReaderGroups(), SCardListReaders(), SCardReconnect(), SCardReleaseContext(), SCardStatus(), and SCardTransmit().


Variable Documentation

PCSCLITE_MUTEX clientMutex = PTHREAD_MUTEX_INITIALIZER [static]

Ensure that some functions be accessed in thread-safe mode.

These function's names finishes with "TH".

Definition at line 167 of file winscard_clnt.c.

Referenced by SCardLockThread(), and SCardUnlockThread().

int mapAddr = 0 [static]

Memory mapped address used to read status information about the readers.

Each element in the vector readerStates makes references to a part of the memory mapped.

Definition at line 161 of file winscard_clnt.c.

Referenced by SCardUnload().

struct _psContextMap psContextMap[PCSCLITE_MAX_APPLICATION_CONTEXTS] [static]

Represents the an Application Context on the Client side.

An Application Context contains Channels (_psChannelMap).

Referenced by getSessionForContext(), isActiveContextPresent(), PCSC_SCF_Initialize(), SCardAddContext(), SCardAddHandle(), SCardBeginTransaction(), SCardCancel(), SCardCancelTH(), SCardCancelTransaction(), SCardConnect(), SCardControl(), SCardDisconnect(), SCardEndTransaction(), SCardEstablishContextTH(), SCardGetContextIndice(), SCardGetContextIndiceTH(), SCardGetIndicesFromHandleTH(), SCardGetSetAttrib(), SCardGetStatusChange(), SCardListReaderGroups(), SCardListReaders(), SCardReconnect(), SCardReleaseContext(), SCardRemoveContext(), SCardRemoveHandle(), SCardStatus(), and SCardTransmit().

PREADER_STATE readerStates[PCSCLITE_MAX_READERS_CONTEXTS] [static]

Pointers to a memory mapped area used to read status information about the readers.

Each element in the vector readerStates makes references to a part of the memory mapped mapAddr.

Definition at line 175 of file winscard_clnt.c.


Generated on Tue Aug 14 13:59:19 2007 for pcsc-lite by  doxygen 1.5.2