hidp.c

Bluezan implementation of the Bluetooth&#8482 wireless standards specifications for Linux. The code

/*
 *
 *  Bluetooth packet analyzer - HIDP parser
 *
 *  Copyright (C) 2003-2005  Marcel Holtmann <[e-mail]>
 *
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *
 *  $Id: hidp.c,v 1.6 2005/02/01 14:36:59 holtmann Exp $
 */

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

#include <sys/types.h>
#include <netinet/in.h>

#include "parser.h"

static char *type2str(uint8_t head)
{
	switch (head & 0xf0) {
	case 0x00:
		return "Handshake";
	case 0x10:
		return "Control";
	case 0x40:
		return "Get report";
	case 0x50:
		return "Set report";
	case 0x60:
		return "Get protocol";
	case 0x70:
		return "Set protocol";
	case 0x80:
		return "Get idle";
	case 0x90:
		return "Set idle";
	case 0xa0:
		return "Data";
	case 0xb0:
		return "Data continuation";
	default:
		return "Reserved";
	}
}

static char *result2str(uint8_t head)
{
	switch (head & 0x0f) {
	case 0x00:
		return "Successful";
	case 0x01:
		return "Not ready";
	case 0x02:
		return "Invalid report ID";
	case 0x03:
		return "Unsupported request";
	case 0x04:
		return "Invalid parameter";
	case 0x0e:
		return "Unknown";
	case 0x0f:
		return "Fatal";
	default:
		return "Reserved";
	}
}

static char *operation2str(uint8_t head)
{
	switch (head & 0x0f) {
	case 0x00:
		return "No operation";
	case 0x01:
		return "Hard reset";
	case 0x02:
		return "Soft reset";
	case 0x03:
		return "Suspend";
	case 0x04:
		return "Exit suspend";
	case 0x05:
		return "Virtual cable unplug";
	default:
		return "Reserved";
	}
}

static char *report2str(uint8_t head)
{
	switch (head & 0x03) {
	case 0x00:
		return "Other report";
	case 0x01:
		return "Input report";
	case 0x02:
		return "Output report";
	case 0x03:
		return "Feature report";
	default:
		return "Reserved";
	}
}

static char *protocol2str(uint8_t head)
{
	switch (head & 0x01) {
	case 0x00:
		return "Boot protocol";
	case 0x01:
		return "Report protocol";
	default:
		return "Reserved";
	}
}

void hidp_dump(int level, struct frame *frm)
{
	uint8_t hdr;
	char *param;

	hdr = get_u8(frm);

	switch (hdr & 0xf0) {
	case 0x00:
		param = result2str(hdr);
		break;
	case 0x10:
		param = operation2str(hdr);
		break;
	case 0x60:
	case 0x70:
		param = protocol2str(hdr);
		break;
	case 0x40:
	case 0x50:
	case 0xa0:
	case 0xb0:
		param = report2str(hdr);
		break;
	default:
		param = "";
		break;
	}

	p_indent(level, frm);

	printf("HIDP: %s: %s\n", type2str(hdr), param);

	raw_dump(level, frm);
}