atrhandler.c File Reference

This keeps track of smart card protocols, timing issues and ATR (Answer-to-Reset) handling. More...

#include "config.h"
#include <string.h>
#include "misc.h"
#include "pcsclite.h"
#include "debuglog.h"
#include "atrhandler.h"

Go to the source code of this file.

Macros
#define	READ_IF_PRESENT(mask, out)

Functions
short	ATRDecodeAtr (int *availableProtocols, int *currentProtocol, PUCHAR pucAtr, DWORD dwLength)
	parse an ATR

Detailed Description

This keeps track of smart card protocols, timing issues and ATR (Answer-to-Reset) handling.

Note

use ./configure –enable-debugatr to enable debug messages to be logged.

Definition in file atrhandler.c.

Macro Definition Documentation

READ_IF_PRESENT

#define READ_IF_PRESENT	(		mask,
			out )

Value:

do {                                            \
    if (p >= dwLength || p >= MAX_ATR_SIZE)     \
        return -5;   \
    (out) = (Y1i & (mask)) ? pucAtr[p++] : -1;  \
} while (0)

Function Documentation

ATRDecodeAtr()

short ATRDecodeAtr	(	int *	availableProtocols,
		int *	currentProtocol,
		PUCHAR	pucAtr,
		DWORD	dwLength )

parse an ATR

Parameters

[out]	availableProtocols	available protocols
[out]	currentProtocol	current protocol
[in]	pucAtr	ATR
[in]	dwLength	ATR length

Returns

Return values

-1	Atr must have TS and T0
-2	Unable to decode TS byte
-3	Unable to decode LNS
-4	Unable do decode T protocol
0	Success

Definition at line 66 of file atrhandler.c.