winscard_msg.h File Reference

This defines some structures and #defines to be used over the transport layer. More...

#include <stdint.h>
#include "pcsclite.h"
#include "wintypes.h"

Go to the source code of this file.

Data Structures
struct	version_struct
	Information transmitted in CMD_VERSION Messages. More...
struct	rxHeader
	header structure for client/server message data exchange. More...
struct	client_struct
struct	wait_reader_state_change
	Information contained in CMD_WAIT_READER_STATE_CHANGE Messages. More...
struct	establish_struct
	Information contained in SCARD_ESTABLISH_CONTEXT Messages. More...
struct	release_struct
	Information contained in SCARD_RELEASE_CONTEXT Messages. More...
struct	connect_struct
	contained in SCARD_CONNECT Messages. More...
struct	reconnect_struct
	contained in SCARD_RECONNECT Messages. More...
struct	disconnect_struct
	contained in SCARD_DISCONNECT Messages. More...
struct	begin_struct
	contained in SCARD_BEGIN_TRANSACTION Messages. More...
struct	end_struct
	contained in SCARD_END_TRANSACTION Messages. More...
struct	cancel_struct
	contained in SCARD_CANCEL Messages. More...
struct	status_struct
	contained in SCARD_STATUS Messages. More...
struct	transmit_struct
	contained in SCARD_TRANSMIT Messages. More...
struct	control_struct
	contained in SCARD_CONTROL Messages. More...
struct	getset_struct
	contained in SCARD_GET_ATTRIB and Messages. More...

Macros
#define	PROTOCOL_VERSION_MAJOR   4
	Major version of the current message protocol.
#define	PROTOCOL_VERSION_MINOR   4
	Minor version of the current message protocol.

Enumerations
enum	pcsc_msg_commands {   CMD_ENUM_FIRST ,   SCARD_ESTABLISH_CONTEXT = 0x01 ,   SCARD_RELEASE_CONTEXT = 0x02 ,   SCARD_LIST_READERS = 0x03 ,   SCARD_CONNECT = 0x04 ,   SCARD_RECONNECT = 0x05 ,   SCARD_DISCONNECT = 0x06 ,   SCARD_BEGIN_TRANSACTION = 0x07 ,   SCARD_END_TRANSACTION = 0x08 ,   SCARD_TRANSMIT = 0x09 ,   SCARD_CONTROL = 0x0A ,   SCARD_STATUS = 0x0B ,   SCARD_GET_STATUS_CHANGE = 0x0C ,   SCARD_CANCEL = 0x0D ,   SCARD_CANCEL_TRANSACTION = 0x0E ,   SCARD_GET_ATTRIB = 0x0F ,   SCARD_SET_ATTRIB = 0x10 ,   CMD_VERSION = 0x11 ,   CMD_GET_READERS_STATE = 0x12 ,   CMD_WAIT_READER_STATE_CHANGE = 0x13 ,   CMD_STOP_WAITING_READER_STATE_CHANGE = 0x14 ,   CMD_ENUM_LAST }
	Commands available to use in the field sharedSegmentMsg.command. More...

Functions
char *	getSocketName (void)
int32_t	ClientSetupSession (uint32_t *)
	Prepares a communication channel for the client to talk to the server.
void	ClientCloseSession (uint32_t)
	Closes the socket used by the client to communicate with the server.
LONG	MessageReceiveTimeout (uint32_t command, void *buffer, uint64_t buffer_size, int32_t filedes, long timeOut)
	Called by the Client to get the response from the server or vice-versa.
LONG	MessageSendWithHeader (uint32_t command, uint32_t dwClientID, uint64_t size, void *data)
	Wrapper for the MessageSend() function.
LONG	MessageSend (void *buffer, uint64_t buffer_size, int32_t filedes)
	Sends a menssage from client to server or vice-versa.
LONG	MessageReceive (void *buffer, uint64_t buffer_size, int32_t filedes)
	Called by the Client to get the response from the server or vice-versa.

Detailed Description

This defines some structures and #defines to be used over the transport layer.

Definition in file winscard_msg.h.

Macro Definition Documentation

PROTOCOL_VERSION_MAJOR

#define PROTOCOL_VERSION_MAJOR   4

Major version of the current message protocol.

Definition at line 50 of file winscard_msg.h.

PROTOCOL_VERSION_MINOR

#define PROTOCOL_VERSION_MINOR   4

Minor version of the current message protocol.

Definition at line 52 of file winscard_msg.h.

Enumeration Type Documentation

pcsc_msg_commands

enum pcsc_msg_commands

Commands available to use in the field sharedSegmentMsg.command.

Enumerator
SCARD_ESTABLISH_CONTEXT	used by SCardEstablishContext()
SCARD_RELEASE_CONTEXT	used by SCardReleaseContext()
SCARD_LIST_READERS	used by SCardListReaders()
SCARD_CONNECT	used by SCardConnect()
SCARD_RECONNECT	used by SCardReconnect()
SCARD_DISCONNECT	used by SCardDisconnect()
SCARD_BEGIN_TRANSACTION	used by SCardBeginTransaction()
SCARD_END_TRANSACTION	used by SCardEndTransaction()
SCARD_TRANSMIT	used by SCardTransmit()
SCARD_CONTROL	used by SCardControl()
SCARD_STATUS	used by SCardStatus()
SCARD_GET_STATUS_CHANGE	not used
SCARD_CANCEL	used by SCardCancel()
SCARD_CANCEL_TRANSACTION	not used
SCARD_GET_ATTRIB	used by SCardGetAttrib()
SCARD_SET_ATTRIB	used by SCardSetAttrib()
CMD_VERSION	get the client/server protocol version
CMD_GET_READERS_STATE	get the readers state
CMD_WAIT_READER_STATE_CHANGE	wait for a reader state change
CMD_STOP_WAITING_READER_STATE_CHANGE	stop waiting for a reader state change

Definition at line 76 of file winscard_msg.h.

Function Documentation

ClientCloseSession()

void ClientCloseSession

(

uint32_t

dwClientID

)

Closes the socket used by the client to communicate with the server.

Parameters

[in]

dwClientID

Client socket handle to be closed.

Definition at line 175 of file winscard_msg.c.

ClientSetupSession()

int32_t ClientSetupSession

(

uint32_t *

pdwClientID

)

Prepares a communication channel for the client to talk to the server.

This is called by the application to create a socket for local IPC with the server. The socket is associated to the file PCSCLITE_CSOCK_NAME.

Parameters

[out]

pdwClientID

Client Connection ID.

Return values

0	Success.
-1	Can not create the socket or the socket can not open a connection or can not set the socket to non-blocking.

Definition at line 121 of file winscard_msg.c.

getSocketName()

char * getSocketName

(

void

)

Definition at line 85 of file winscard_msg.c.

MessageReceive()

LONG MessageReceive	(	void *	buffer_void,
		uint64_t	buffer_size,
		int32_t	filedes
	)

Called by the Client to get the response from the server or vice-versa.

Reads the message from the file filedes.

Parameters

[out]	buffer_void	Message read.
[in]	buffer_size	Size to read
[in]	filedes	Socket handle.

Return values

SCARD_S_SUCCESS	Success.
SCARD_F_COMM_ERROR	Socket is closed or a signal was received.

Definition at line 457 of file winscard_msg.c.

MessageReceiveTimeout()

LONG MessageReceiveTimeout	(	uint32_t	command,
		void *	buffer_void,
		uint64_t	buffer_size,
		int32_t	filedes,
		long	timeOut
	)

Called by the Client to get the response from the server or vice-versa.

Reads the message from the file filedes.

Parameters

[in]	command	one of the pcsc_msg_commands commands
[out]	buffer_void	Message read.
[in]	buffer_size	Size to read
[in]	filedes	Socket handle.
[in]	timeOut	Timeout in milliseconds.

Return values

SCARD_S_SUCCESS	Success.
SCARD_E_TIMEOUT	Timeout.
SCARD_F_COMM_ERROR	Socket is closed or a signal was received.

Definition at line 197 of file winscard_msg.c.

MessageSend()

LONG MessageSend	(	void *	buffer_void,
		uint64_t	buffer_size,
		int32_t	filedes
	)

Sends a menssage from client to server or vice-versa.

Writes the message in the shared file filedes.

Parameters

[in]	buffer_void	Message to be sent.
[in]	buffer_size	Size of the message to send
[in]	filedes	Socket handle.

Return values

SCARD_S_SUCCESS	Success
SCARD_E_TIMEOUT	Timeout.
SCARD_F_COMM_ERROR	Socket is closed or a signal was received.

Definition at line 357 of file winscard_msg.c.

MessageSendWithHeader()

LONG MessageSendWithHeader	(	uint32_t	command,
		uint32_t	dwClientID,
		uint64_t	size,
		void *	data_void
	)

Wrapper for the MessageSend() function.

Called by clients to send messages to the server. The parameters command and data are set in the sharedSegmentMsg struct in order to be sent.

Parameters

[in]	command	Command to be sent.
[in]	dwClientID	Client socket handle.
[in]	size	Size of the message (data).
[in]	data_void	Data to be sent.

Returns

Same error codes as MessageSend().

Definition at line 320 of file winscard_msg.c.