tools/parser/sap.c - vendor/opensource/bluez - Git at Google

 /*
  *
  *  BlueZ - Bluetooth protocol stack for Linux
  *
  *  Copyright (C) 2012  Tieto Poland
  *
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  *
  */

 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif

 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>

 #include "parser.h"

 #define PADDING4(x) ((4 - ((x) & 0x03)) & 0x03)

 #define SAP_CONNECT_REQ				0x00
 #define SAP_CONNECT_RESP			0x01
 #define SAP_DISCONNECT_REQ			0x02
 #define SAP_DISCONNECT_RESP			0x03
 #define SAP_DISCONNECT_IND			0x04
 #define SAP_TRANSFER_APDU_REQ			0x05
 #define SAP_TRANSFER_APDU_RESP			0x06
 #define SAP_TRANSFER_ATR_REQ			0x07
 #define SAP_TRANSFER_ATR_RESP			0x08
 #define SAP_POWER_SIM_OFF_REQ			0x09
 #define SAP_POWER_SIM_OFF_RESP			0x0A
 #define SAP_POWER_SIM_ON_REQ			0x0B
 #define SAP_POWER_SIM_ON_RESP			0x0C
 #define SAP_RESET_SIM_REQ			0x0D
 #define SAP_RESET_SIM_RESP			0x0E
 #define SAP_TRANSFER_CARD_READER_STATUS_REQ	0x0F
 #define SAP_TRANSFER_CARD_READER_STATUS_RESP	0x10
 #define SAP_STATUS_IND				0x11
 #define SAP_ERROR_RESP				0x12
 #define SAP_SET_TRANSPORT_PROTOCOL_REQ		0x13
 #define SAP_SET_TRANSPORT_PROTOCOL_RESP		0x14

 #define SAP_PARAM_ID_MAX_MSG_SIZE	0x00
 #define SAP_PARAM_ID_CONN_STATUS	0x01
 #define SAP_PARAM_ID_RESULT_CODE	0x02
 #define SAP_PARAM_ID_DISCONNECT_IND	0x03
 #define SAP_PARAM_ID_COMMAND_APDU	0x04
 #define SAP_PARAM_ID_COMMAND_APDU7816	0x10
 #define SAP_PARAM_ID_RESPONSE_APDU	0x05
 #define SAP_PARAM_ID_ATR		0x06
 #define SAP_PARAM_ID_CARD_READER_STATUS	0x07
 #define SAP_PARAM_ID_STATUS_CHANGE	0x08
 #define SAP_PARAM_ID_TRANSPORT_PROTOCOL	0x09

 #define SAP_STATUS_OK				0x00
 #define SAP_STATUS_CONNECTION_FAILED		0x01
 #define SAP_STATUS_MAX_MSG_SIZE_NOT_SUPPORTED	0x02
 #define SAP_STATUS_MAX_MSG_SIZE_TOO_SMALL	0x03
 #define SAP_STATUS_OK_ONGOING_CALL		0x04

 #define SAP_DISCONNECTION_TYPE_GRACEFUL		0x00
 #define SAP_DISCONNECTION_TYPE_IMMEDIATE	0x01
 #define SAP_DISCONNECTION_TYPE_CLIENT		0xFF

 #define SAP_RESULT_OK			0x00
 #define SAP_RESULT_ERROR_NO_REASON	0x01
 #define SAP_RESULT_ERROR_NOT_ACCESSIBLE	0x02
 #define SAP_RESULT_ERROR_POWERED_OFF	0x03
 #define SAP_RESULT_ERROR_CARD_REMOVED	0x04
 #define SAP_RESULT_ERROR_POWERED_ON	0x05
 #define SAP_RESULT_ERROR_NO_DATA	0x06
 #define SAP_RESULT_NOT_SUPPORTED	0x07

 #define SAP_STATUS_CHANGE_UNKNOWN_ERROR		0x00
 #define SAP_STATUS_CHANGE_CARD_RESET		0x01
 #define SAP_STATUS_CHANGE_CARD_NOT_ACCESSIBLE	0x02
 #define SAP_STATUS_CHANGE_CARD_REMOVED		0x03
 #define SAP_STATUS_CHANGE_CARD_INSERTED		0x04
 #define SAP_STATUS_CHANGE_CARD_RECOVERED	0x05

 #define SAP_TRANSPORT_PROTOCOL_T0	0x00
 #define SAP_TRANSPORT_PROTOCOL_T1	0x01

 static const char *msg2str(uint8_t msg)
 {
 	switch (msg) {
 	case SAP_CONNECT_REQ:
 		return "Connect Req";
 	case SAP_CONNECT_RESP:
 		return "Connect Resp";
 	case SAP_DISCONNECT_REQ:
 		return "Disconnect Req";
 	case SAP_DISCONNECT_RESP:
 		return "Disconnect Resp";
 	case SAP_DISCONNECT_IND:
 		return "Disconnect Ind";
 	case SAP_TRANSFER_APDU_REQ:
 		return "Transfer APDU Req";
 	case SAP_TRANSFER_APDU_RESP:
 		return "Transfer APDU Resp";
 	case SAP_TRANSFER_ATR_REQ:
 		return "Transfer ATR Req";
 	case SAP_TRANSFER_ATR_RESP:
 		return "Transfer ATR Resp";
 	case SAP_POWER_SIM_OFF_REQ:
 		return "Power SIM Off Req";
 	case SAP_POWER_SIM_OFF_RESP:
 		return "Power SIM Off Resp";
 	case SAP_POWER_SIM_ON_REQ:
 		return "Power SIM On Req";
 	case SAP_POWER_SIM_ON_RESP:
 		return "Power SIM On Resp";
 	case SAP_RESET_SIM_REQ:
 		return "Reset SIM Req";
 	case SAP_RESET_SIM_RESP:
 		return "Reset SIM Resp";
 	case SAP_TRANSFER_CARD_READER_STATUS_REQ:
 		return "Transfer Card Reader Status Req";
 	case SAP_TRANSFER_CARD_READER_STATUS_RESP:
 		return "Transfer Card Reader Status Resp";
 	case SAP_STATUS_IND:
 		return "Status Ind";
 	case SAP_ERROR_RESP:
 		return "Error Resp";
 	case SAP_SET_TRANSPORT_PROTOCOL_REQ:
 		return "Set Transport Protocol Req";
 	case SAP_SET_TRANSPORT_PROTOCOL_RESP:
 		return "Set Transport Protocol Resp";
 	default:
 		return "Reserved";
 	}
 }

 static const char *param2str(uint8_t param)
 {
 	switch (param) {
 	case SAP_PARAM_ID_MAX_MSG_SIZE:
 		return "MaxMsgSize";
 	case SAP_PARAM_ID_CONN_STATUS:
 		return "ConnectionStatus";
 	case SAP_PARAM_ID_RESULT_CODE:
 		return "ResultCode";
 	case SAP_PARAM_ID_DISCONNECT_IND:
 		return "DisconnectionType";
 	case SAP_PARAM_ID_COMMAND_APDU:
 		return "CommandAPDU";
 	case SAP_PARAM_ID_COMMAND_APDU7816:
 		return "CommandAPDU7816";
 	case SAP_PARAM_ID_RESPONSE_APDU:
 		return "ResponseAPDU";
 	case SAP_PARAM_ID_ATR:
 		return "ATR";
 	case SAP_PARAM_ID_CARD_READER_STATUS:
 		return "CardReaderStatus";
 	case SAP_PARAM_ID_STATUS_CHANGE:
 		return "StatusChange";
 	case SAP_PARAM_ID_TRANSPORT_PROTOCOL:
 		return "TransportProtocol";
 	default:
 		return "Reserved";
 	}
 }

 static const char *status2str(uint8_t status)
 {
 	switch (status) {
 	case  SAP_STATUS_OK:
 		return "OK, Server can fulfill requirements";
 	case  SAP_STATUS_CONNECTION_FAILED:
 		return "Error, Server unable to establish connection";
 	case  SAP_STATUS_MAX_MSG_SIZE_NOT_SUPPORTED:
 		return "Error, Server does not support maximum message size";
 	case  SAP_STATUS_MAX_MSG_SIZE_TOO_SMALL:
 		return "Error, maximum message size by Client is too small";
 	case  SAP_STATUS_OK_ONGOING_CALL:
 		return "OK, ongoing call";
 	default:
 		return "Reserved";
 	}
 }

 static const char *disctype2str(uint8_t disctype)
 {
 	switch (disctype) {
 	case  SAP_DISCONNECTION_TYPE_GRACEFUL:
 		return "Graceful";
 	case  SAP_DISCONNECTION_TYPE_IMMEDIATE:
 		return "Immediate";
 	default:
 		return "Reserved";
 	}
 }

 static const char *result2str(uint8_t result)
 {
 	switch (result) {
 	case  SAP_RESULT_OK:
 		return "OK, request processed correctly";
 	case  SAP_RESULT_ERROR_NO_REASON:
 		return "Error, no reason defined";
 	case SAP_RESULT_ERROR_NOT_ACCESSIBLE:
 		return "Error, card not accessible";
 	case  SAP_RESULT_ERROR_POWERED_OFF:
 		return "Error, card (already) powered off";
 	case  SAP_RESULT_ERROR_CARD_REMOVED:
 		return "Error, card removed";
 	case  SAP_RESULT_ERROR_POWERED_ON:
 		return "Error, card already powered on";
 	case  SAP_RESULT_ERROR_NO_DATA:
 		return "Error, data not available";
 	case  SAP_RESULT_NOT_SUPPORTED:
 		return "Error, not supported";
 	default:
 		return "Reserved";
 	}
 }

 static const char *statuschg2str(uint8_t statuschg)
 {
 	switch (statuschg) {
 	case  SAP_STATUS_CHANGE_UNKNOWN_ERROR:
 		return "Unknown Error";
 	case  SAP_STATUS_CHANGE_CARD_RESET:
 		return "Card reset";
 	case  SAP_STATUS_CHANGE_CARD_NOT_ACCESSIBLE:
 		return "Card not accessible";
 	case  SAP_STATUS_CHANGE_CARD_REMOVED:
 		return "Card removed";
 	case  SAP_STATUS_CHANGE_CARD_INSERTED:
 		return "Card inserted";
 	case  SAP_STATUS_CHANGE_CARD_RECOVERED:
 		return "Card recovered";
 	default:
 		return "Reserved";
 	}
 }

 static const char *prot2str(uint8_t prot)
 {
 	switch (prot) {
 	case SAP_TRANSPORT_PROTOCOL_T0:
 		return "T=0";
 	case SAP_TRANSPORT_PROTOCOL_T1:
 		return "T=1";
 	default:
 		return "Reserved";
 	}
 }

 static void parse_parameters(int level, struct frame *frm)
 {
 	uint8_t param;
 	uint16_t len;
 	uint8_t pv8;

 	while (frm->len > 3) {
 		p_indent(level, frm);

 		param = p_get_u8(frm);
 		p_get_u8(frm);
 		len = p_get_u16(frm);

 		printf("%s (0x%02x) len %d = ", param2str(param), param, len);

 		switch (param) {
 		case SAP_PARAM_ID_MAX_MSG_SIZE:
 			printf("%d\n", p_get_u16(frm));
 			break;
 		case SAP_PARAM_ID_CONN_STATUS:
 			pv8 = p_get_u8(frm);
 			printf("0x%02x (%s)\n", pv8, status2str(pv8));
 			break;
 		case SAP_PARAM_ID_RESULT_CODE:
 		case SAP_PARAM_ID_CARD_READER_STATUS:
 			pv8 = p_get_u8(frm);
 			printf("0x%02x (%s)\n", pv8, result2str(pv8));
 			break;
 		case SAP_PARAM_ID_DISCONNECT_IND:
 			pv8 = p_get_u8(frm);
 			printf("0x%02x (%s)\n", pv8, disctype2str(pv8));
 			break;
 		case SAP_PARAM_ID_STATUS_CHANGE:
 			pv8 = p_get_u8(frm);
 			printf("0x%02x (%s)\n", pv8, statuschg2str(pv8));
 			break;
 		case SAP_PARAM_ID_TRANSPORT_PROTOCOL:
 			pv8 = p_get_u8(frm);
 			printf("0x%02x (%s)\n", pv8, prot2str(pv8));
 			break;
 		default:
 			printf("\n");
 			raw_ndump(level + 1, frm, len);
 			frm->ptr += len;
 			frm->len -= len;
 		}

 		/* Skip padding */
 		frm->ptr += PADDING4(len);
 		frm->len -= PADDING4(len);
 	}
 }

 void sap_dump(int level, struct frame *frm)
 {
 	uint8_t msg, params;

 	msg = p_get_u8(frm);
 	params = p_get_u8(frm);

 	/* Skip reserved field */
 	p_get_u16(frm);

 	p_indent(level, frm);

 	printf("SAP: %s: params %d\n", msg2str(msg), params);

 	parse_parameters(level, frm);
 }
	/*
	*
	* BlueZ - Bluetooth protocol stack for Linux
	*
	* Copyright (C) 2012 Tieto Poland
	*
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*
	*/

	#ifdef HAVE_CONFIG_H
	#include <config.h>
	#endif

	#include <stdio.h>
	#include <errno.h>
	#include <unistd.h>
	#include <stdlib.h>
	#include <string.h>

	#include "parser.h"

	#define PADDING4(x) ((4 - ((x) & 0x03)) & 0x03)

	#define SAP_CONNECT_REQ 0x00
	#define SAP_CONNECT_RESP 0x01
	#define SAP_DISCONNECT_REQ 0x02
	#define SAP_DISCONNECT_RESP 0x03
	#define SAP_DISCONNECT_IND 0x04
	#define SAP_TRANSFER_APDU_REQ 0x05
	#define SAP_TRANSFER_APDU_RESP 0x06
	#define SAP_TRANSFER_ATR_REQ 0x07
	#define SAP_TRANSFER_ATR_RESP 0x08
	#define SAP_POWER_SIM_OFF_REQ 0x09
	#define SAP_POWER_SIM_OFF_RESP 0x0A
	#define SAP_POWER_SIM_ON_REQ 0x0B
	#define SAP_POWER_SIM_ON_RESP 0x0C
	#define SAP_RESET_SIM_REQ 0x0D
	#define SAP_RESET_SIM_RESP 0x0E
	#define SAP_TRANSFER_CARD_READER_STATUS_REQ 0x0F
	#define SAP_TRANSFER_CARD_READER_STATUS_RESP 0x10
	#define SAP_STATUS_IND 0x11
	#define SAP_ERROR_RESP 0x12
	#define SAP_SET_TRANSPORT_PROTOCOL_REQ 0x13
	#define SAP_SET_TRANSPORT_PROTOCOL_RESP 0x14

	#define SAP_PARAM_ID_MAX_MSG_SIZE 0x00
	#define SAP_PARAM_ID_CONN_STATUS 0x01
	#define SAP_PARAM_ID_RESULT_CODE 0x02
	#define SAP_PARAM_ID_DISCONNECT_IND 0x03
	#define SAP_PARAM_ID_COMMAND_APDU 0x04
	#define SAP_PARAM_ID_COMMAND_APDU7816 0x10
	#define SAP_PARAM_ID_RESPONSE_APDU 0x05
	#define SAP_PARAM_ID_ATR 0x06
	#define SAP_PARAM_ID_CARD_READER_STATUS 0x07
	#define SAP_PARAM_ID_STATUS_CHANGE 0x08
	#define SAP_PARAM_ID_TRANSPORT_PROTOCOL 0x09

	#define SAP_STATUS_OK 0x00
	#define SAP_STATUS_CONNECTION_FAILED 0x01
	#define SAP_STATUS_MAX_MSG_SIZE_NOT_SUPPORTED 0x02
	#define SAP_STATUS_MAX_MSG_SIZE_TOO_SMALL 0x03
	#define SAP_STATUS_OK_ONGOING_CALL 0x04

	#define SAP_DISCONNECTION_TYPE_GRACEFUL 0x00
	#define SAP_DISCONNECTION_TYPE_IMMEDIATE 0x01
	#define SAP_DISCONNECTION_TYPE_CLIENT 0xFF

	#define SAP_RESULT_OK 0x00
	#define SAP_RESULT_ERROR_NO_REASON 0x01
	#define SAP_RESULT_ERROR_NOT_ACCESSIBLE 0x02
	#define SAP_RESULT_ERROR_POWERED_OFF 0x03
	#define SAP_RESULT_ERROR_CARD_REMOVED 0x04
	#define SAP_RESULT_ERROR_POWERED_ON 0x05
	#define SAP_RESULT_ERROR_NO_DATA 0x06
	#define SAP_RESULT_NOT_SUPPORTED 0x07

	#define SAP_STATUS_CHANGE_UNKNOWN_ERROR 0x00
	#define SAP_STATUS_CHANGE_CARD_RESET 0x01
	#define SAP_STATUS_CHANGE_CARD_NOT_ACCESSIBLE 0x02
	#define SAP_STATUS_CHANGE_CARD_REMOVED 0x03
	#define SAP_STATUS_CHANGE_CARD_INSERTED 0x04
	#define SAP_STATUS_CHANGE_CARD_RECOVERED 0x05

	#define SAP_TRANSPORT_PROTOCOL_T0 0x00
	#define SAP_TRANSPORT_PROTOCOL_T1 0x01

	static const char *msg2str(uint8_t msg)
	{
	switch (msg) {
	case SAP_CONNECT_REQ:
	return "Connect Req";
	case SAP_CONNECT_RESP:
	return "Connect Resp";
	case SAP_DISCONNECT_REQ:
	return "Disconnect Req";
	case SAP_DISCONNECT_RESP:
	return "Disconnect Resp";
	case SAP_DISCONNECT_IND:
	return "Disconnect Ind";
	case SAP_TRANSFER_APDU_REQ:
	return "Transfer APDU Req";
	case SAP_TRANSFER_APDU_RESP:
	return "Transfer APDU Resp";
	case SAP_TRANSFER_ATR_REQ:
	return "Transfer ATR Req";
	case SAP_TRANSFER_ATR_RESP:
	return "Transfer ATR Resp";
	case SAP_POWER_SIM_OFF_REQ:
	return "Power SIM Off Req";
	case SAP_POWER_SIM_OFF_RESP:
	return "Power SIM Off Resp";
	case SAP_POWER_SIM_ON_REQ:
	return "Power SIM On Req";
	case SAP_POWER_SIM_ON_RESP:
	return "Power SIM On Resp";
	case SAP_RESET_SIM_REQ:
	return "Reset SIM Req";
	case SAP_RESET_SIM_RESP:
	return "Reset SIM Resp";
	case SAP_TRANSFER_CARD_READER_STATUS_REQ:
	return "Transfer Card Reader Status Req";
	case SAP_TRANSFER_CARD_READER_STATUS_RESP:
	return "Transfer Card Reader Status Resp";
	case SAP_STATUS_IND:
	return "Status Ind";
	case SAP_ERROR_RESP:
	return "Error Resp";
	case SAP_SET_TRANSPORT_PROTOCOL_REQ:
	return "Set Transport Protocol Req";
	case SAP_SET_TRANSPORT_PROTOCOL_RESP:
	return "Set Transport Protocol Resp";
	default:
	return "Reserved";
	}
	}

	static const char *param2str(uint8_t param)
	{
	switch (param) {
	case SAP_PARAM_ID_MAX_MSG_SIZE:
	return "MaxMsgSize";
	case SAP_PARAM_ID_CONN_STATUS:
	return "ConnectionStatus";
	case SAP_PARAM_ID_RESULT_CODE:
	return "ResultCode";
	case SAP_PARAM_ID_DISCONNECT_IND:
	return "DisconnectionType";
	case SAP_PARAM_ID_COMMAND_APDU:
	return "CommandAPDU";
	case SAP_PARAM_ID_COMMAND_APDU7816:
	return "CommandAPDU7816";
	case SAP_PARAM_ID_RESPONSE_APDU:
	return "ResponseAPDU";
	case SAP_PARAM_ID_ATR:
	return "ATR";
	case SAP_PARAM_ID_CARD_READER_STATUS:
	return "CardReaderStatus";
	case SAP_PARAM_ID_STATUS_CHANGE:
	return "StatusChange";
	case SAP_PARAM_ID_TRANSPORT_PROTOCOL:
	return "TransportProtocol";
	default:
	return "Reserved";
	}
	}

	static const char *status2str(uint8_t status)
	{
	switch (status) {
	case SAP_STATUS_OK:
	return "OK, Server can fulfill requirements";
	case SAP_STATUS_CONNECTION_FAILED:
	return "Error, Server unable to establish connection";
	case SAP_STATUS_MAX_MSG_SIZE_NOT_SUPPORTED:
	return "Error, Server does not support maximum message size";
	case SAP_STATUS_MAX_MSG_SIZE_TOO_SMALL:
	return "Error, maximum message size by Client is too small";
	case SAP_STATUS_OK_ONGOING_CALL:
	return "OK, ongoing call";
	default:
	return "Reserved";
	}
	}

	static const char *disctype2str(uint8_t disctype)
	{
	switch (disctype) {
	case SAP_DISCONNECTION_TYPE_GRACEFUL:
	return "Graceful";
	case SAP_DISCONNECTION_TYPE_IMMEDIATE:
	return "Immediate";
	default:
	return "Reserved";
	}
	}

	static const char *result2str(uint8_t result)
	{
	switch (result) {
	case SAP_RESULT_OK:
	return "OK, request processed correctly";
	case SAP_RESULT_ERROR_NO_REASON:
	return "Error, no reason defined";
	case SAP_RESULT_ERROR_NOT_ACCESSIBLE:
	return "Error, card not accessible";
	case SAP_RESULT_ERROR_POWERED_OFF:
	return "Error, card (already) powered off";
	case SAP_RESULT_ERROR_CARD_REMOVED:
	return "Error, card removed";
	case SAP_RESULT_ERROR_POWERED_ON:
	return "Error, card already powered on";
	case SAP_RESULT_ERROR_NO_DATA:
	return "Error, data not available";
	case SAP_RESULT_NOT_SUPPORTED:
	return "Error, not supported";
	default:
	return "Reserved";
	}
	}

	static const char *statuschg2str(uint8_t statuschg)
	{
	switch (statuschg) {
	case SAP_STATUS_CHANGE_UNKNOWN_ERROR:
	return "Unknown Error";
	case SAP_STATUS_CHANGE_CARD_RESET:
	return "Card reset";
	case SAP_STATUS_CHANGE_CARD_NOT_ACCESSIBLE:
	return "Card not accessible";
	case SAP_STATUS_CHANGE_CARD_REMOVED:
	return "Card removed";
	case SAP_STATUS_CHANGE_CARD_INSERTED:
	return "Card inserted";
	case SAP_STATUS_CHANGE_CARD_RECOVERED:
	return "Card recovered";
	default:
	return "Reserved";
	}
	}

	static const char *prot2str(uint8_t prot)
	{
	switch (prot) {
	case SAP_TRANSPORT_PROTOCOL_T0:
	return "T=0";
	case SAP_TRANSPORT_PROTOCOL_T1:
	return "T=1";
	default:
	return "Reserved";
	}
	}

	static void parse_parameters(int level, struct frame *frm)
	{
	uint8_t param;
	uint16_t len;
	uint8_t pv8;

	while (frm->len > 3) {
	p_indent(level, frm);

	param = p_get_u8(frm);
	p_get_u8(frm);
	len = p_get_u16(frm);

	printf("%s (0x%02x) len %d = ", param2str(param), param, len);

	switch (param) {
	case SAP_PARAM_ID_MAX_MSG_SIZE:
	printf("%d\n", p_get_u16(frm));
	break;
	case SAP_PARAM_ID_CONN_STATUS:
	pv8 = p_get_u8(frm);
	printf("0x%02x (%s)\n", pv8, status2str(pv8));
	break;
	case SAP_PARAM_ID_RESULT_CODE:
	case SAP_PARAM_ID_CARD_READER_STATUS:
	pv8 = p_get_u8(frm);
	printf("0x%02x (%s)\n", pv8, result2str(pv8));
	break;
	case SAP_PARAM_ID_DISCONNECT_IND:
	pv8 = p_get_u8(frm);
	printf("0x%02x (%s)\n", pv8, disctype2str(pv8));
	break;
	case SAP_PARAM_ID_STATUS_CHANGE:
	pv8 = p_get_u8(frm);
	printf("0x%02x (%s)\n", pv8, statuschg2str(pv8));
	break;
	case SAP_PARAM_ID_TRANSPORT_PROTOCOL:
	pv8 = p_get_u8(frm);
	printf("0x%02x (%s)\n", pv8, prot2str(pv8));
	break;
	default:
	printf("\n");
	raw_ndump(level + 1, frm, len);
	frm->ptr += len;
	frm->len -= len;
	}

	/* Skip padding */
	frm->ptr += PADDING4(len);
	frm->len -= PADDING4(len);
	}
	}

	void sap_dump(int level, struct frame *frm)
	{
	uint8_t msg, params;

	msg = p_get_u8(frm);
	params = p_get_u8(frm);

	/* Skip reserved field */
	p_get_u16(frm);

	p_indent(level, frm);

	printf("SAP: %s: params %d\n", msg2str(msg), params);

	parse_parameters(level, frm);
	}