l2test.c

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

/*
 *
 *  BlueZ - Bluetooth protocol stack for Linux
 *
 *  Copyright (C) 2000-2001  Qualcomm Incorporated
 *  Copyright (C) 2002-2003  Maxim Krasnyansky <[e-mail]>
 *  Copyright (C) 2002-2005  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 version 2 as
 *  published by the Free Software Foundation;
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 *  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
 *  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
 *  CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 
 *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
 *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
 *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 *  ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 
 *  COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 
 *  SOFTWARE IS DISCLAIMED.
 *
 *
 *  $Id: l2test.c,v 1.27 2005/05/19 17:06:50 holtmann Exp $
 */

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

#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <unistd.h>
#include <stdlib.h>
#include <getopt.h>
#include <syslog.h>
#include <signal.h>
#include <sys/time.h>
#include <sys/poll.h>
#include <sys/socket.h>

#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
#include <bluetooth/l2cap.h>

#define NIBBLE_TO_ASCII(c)  ((c) < 0x0a ? (c) + 0x30 : (c) + 0x57)

/* Test modes */
enum {
	SEND,
	RECV,
	RECONNECT,
	MULTY,
	DUMP,
	CONNECT,
	CRECV,
	LSEND,
	SENDDUMP,
	LSENDDUMP
};

static unsigned char *buf;

/* Default mtu */
static int imtu = 672;
static int omtu = 0;

/* Default data size */
static long data_size = -1;

/* Default addr and psm */
static bdaddr_t bdaddr;
static unsigned short psm = 10;

/* Default number of frames to send (-1 = infinite) */
static int num_frames = -1;

static int flowctl = 0;
static int master = 0;
static int auth = 0;
static int encrypt = 0;
static int secure = 0;
static int socktype = SOCK_SEQPACKET;
static int linger = 0;
static int reliable = 0;

static float tv2fl(struct timeval tv)
{
	return (float)tv.tv_sec + (float)(tv.tv_usec/1000000.0);
}

static char *ltoh(unsigned long c, char* s)
{
	int c1;

	c1     = (c >> 28) & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	c1     = (c >> 24) & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	c1     = (c >> 20) & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	c1     = (c >> 16) & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	c1     = (c >> 12) & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	c1     = (c >>  8) & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	c1     = (c >>  4) & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	c1     = c & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	*s     = 0;
	return s;
}

static char *ctoh(char c, char* s)
{
	char c1;

	c1     = (c >> 4) & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	c1     = c & 0x0f;
	*(s++) = NIBBLE_TO_ASCII (c1);
	*s     = 0;
	return s;
}

static void hexdump(char *s, unsigned long l)
{
	char bfr[80];
	char *pb;
	unsigned long i, n = 0;

	if (l == 0)
		return;

	while (n < l) {
		pb = bfr;
		pb = ltoh (n, pb);
		*(pb++) = ':';
		*(pb++) = ' ';
		for (i = 0; i < 16; i++) {
			if (n + i >= l) {
				*(pb++) = ' ';
				*(pb++) = ' ';
			} else
				pb = ctoh (*(s + i), pb);
			*(pb++) = ' ';
		}
		*(pb++) = ' ';
		for (i = 0; i < 16; i++) {
			if (n + i >= l)
				break;
			else
				*(pb++) = (isprint (*(s + i)) ? *(s + i) : '.');
		}
		*pb = 0;
		n += 16;
		s += 16;
		puts(bfr);
	}
}

static int do_connect(char *svr)
{
	struct sockaddr_l2 addr;
	struct l2cap_options opts;
	struct l2cap_conninfo conn;
	socklen_t optlen;
	int sk, opt;

	/* Create socket */
	sk = socket(PF_BLUETOOTH, socktype, BTPROTO_L2CAP);
	if (sk < 0) {
		syslog(LOG_ERR, "Can't create socket: %s (%d)",
							strerror(errno), errno);
		return -1;
	}

	/* Bind to local address */
	memset(&addr, 0, sizeof(addr));
	addr.l2_family = AF_BLUETOOTH;
	bacpy(&addr.l2_bdaddr, &bdaddr);

	if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		syslog(LOG_ERR, "Can't bind socket: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	/* Get default options */
	memset(&opts, 0, sizeof(opts));
	optlen = sizeof(opts);

	if (getsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, &opts, &optlen) < 0) {
		syslog(LOG_ERR, "Can't get default L2CAP options: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	/* Set new options */
	opts.omtu = omtu;
	opts.imtu = imtu;
	if (flowctl)
		opts.mode = 2;

	if (setsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, &opts, sizeof(opts)) < 0) {
		syslog(LOG_ERR, "Can't set L2CAP options: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	/* Enable SO_LINGER */
	if (linger) {
		struct linger l = { .l_onoff = 1, .l_linger = linger };

		if (setsockopt(sk, SOL_SOCKET, SO_LINGER, &l, sizeof(l)) < 0) {
			syslog(LOG_ERR, "Can't enable SO_LINGER: %s (%d)",
							strerror(errno), errno);
			return -1;
		}
	}

	/* Set link mode */
	opt = 0;
	if (reliable)
		opt |= L2CAP_LM_RELIABLE;

	if (setsockopt(sk, SOL_L2CAP, L2CAP_LM, &opt, sizeof(opt)) < 0) {
		syslog(LOG_ERR, "Can't set L2CAP link mode: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	/* Connect to remote device */
	memset(&addr, 0, sizeof(addr));
	addr.l2_family = AF_BLUETOOTH;
	str2ba(svr, &addr.l2_bdaddr);
	addr.l2_psm = htobs(psm);

	if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0 ) {
		syslog(LOG_ERR, "Can't connect: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	/* Get current options */
	memset(&opts, 0, sizeof(opts));
	optlen = sizeof(opts);

	if (getsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, &opts, &optlen) < 0) {
		syslog(LOG_ERR, "Can't get L2CAP options: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	/* Get connection information */
	memset(&conn, 0, sizeof(conn));
	optlen = sizeof(conn);

	if (getsockopt(sk, SOL_L2CAP, L2CAP_CONNINFO, &conn, &optlen) < 0) {
		syslog(LOG_ERR, "Can't get L2CAP connection information: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	syslog(LOG_INFO, "Connected [imtu %d, omtu %d, flush_to %d, "
				"mode %d, handle %d, class 0x%02x%02x%02x]",
		opts.imtu, opts.omtu, opts.flush_to, opts.mode, conn.hci_handle,
		conn.dev_class[2], conn.dev_class[1], conn.dev_class[0]);

	if (data_size > opts.omtu)
		data_size = opts.omtu;

	return sk;

error:
	close(sk);
	return -1;
}

static void do_listen(void (*handler)(int sk))
{
	struct sockaddr_l2 addr;
	struct l2cap_options opts;
	struct l2cap_conninfo conn;
	socklen_t optlen;
	int sk, nsk, opt;
	char ba[18];

	/* Create socket */
	sk = socket(PF_BLUETOOTH, socktype, BTPROTO_L2CAP);
	if (sk < 0) {
		syslog(LOG_ERR, "Can't create socket: %s (%d)",
							strerror(errno), errno);
		exit(1);
	}

	/* Bind to local address */
	addr.l2_family = AF_BLUETOOTH;
	bacpy(&addr.l2_bdaddr, &bdaddr);
	addr.l2_psm = htobs(psm);

	if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		syslog(LOG_ERR, "Can't bind socket: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	/* Set link mode */
	opt = 0;
	if (reliable)
		opt |= L2CAP_LM_RELIABLE;
	if (master)
		opt |= L2CAP_LM_MASTER;
	if (auth)
		opt |= L2CAP_LM_AUTH;
	if (encrypt)
		opt |= L2CAP_LM_ENCRYPT;
	if (secure)
		opt |= L2CAP_LM_SECURE;

	if (opt && setsockopt(sk, SOL_L2CAP, L2CAP_LM, &opt, sizeof(opt)) < 0) {
		syslog(LOG_ERR, "Can't set L2CAP link mode: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	/* Get default options */
	memset(&opts, 0, sizeof(opts));
	optlen = sizeof(opts);

	if (getsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, &opts, &optlen) < 0) {
		syslog(LOG_ERR, "Can't get default L2CAP options: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	/* Set new options */
	opts.imtu = imtu;
	if (flowctl)
		opts.mode = 2;

	if (setsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, &opts, sizeof(opts)) < 0) {
		syslog(LOG_ERR, "Can't set L2CAP options: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	if (socktype == SOCK_DGRAM) {
		handler(sk);
		return;
	}

	/* Listen for connections */
	if (listen(sk, 10)) {
		syslog(LOG_ERR, "Can not listen on the socket: %s (%d)",
							strerror(errno), errno);
		goto error;
	}

	syslog(LOG_INFO, "Waiting for connection on psm %d ...", psm);

	while(1) {
		memset(&addr, 0, sizeof(addr));
		optlen = sizeof(addr);

		nsk = accept(sk, (struct sockaddr *) &addr, &optlen);
		if (nsk < 0) {
			syslog(LOG_ERR, "Accept failed: %s (%d)",
							strerror(errno), errno);
			goto error;
		}
		if (fork()) {
			/* Parent */
			close(nsk);
			continue;
		}
		/* Child */
		close(sk);

		/* Get current options */
		memset(&opts, 0, sizeof(opts));
		optlen = sizeof(opts);

		if (getsockopt(nsk, SOL_L2CAP, L2CAP_OPTIONS, &opts, &optlen) < 0) {
			syslog(LOG_ERR, "Can't get L2CAP options: %s (%d)",
							strerror(errno), errno);
			close(nsk);
			goto error;
		}

		/* Get connection information */
		memset(&conn, 0, sizeof(conn));
		optlen = sizeof(conn);

		if (getsockopt(nsk, SOL_L2CAP, L2CAP_CONNINFO, &conn, &optlen) < 0) {
			syslog(LOG_ERR, "Can't get L2CAP connection information: %s (%d)",
							strerror(errno), errno);
			close(nsk);
			goto error;
		}

		ba2str(&addr.l2_bdaddr, ba);
		syslog(LOG_INFO, "Connect from %s [imtu %d, omtu %d, flush_to %d, "
					"mode %d, handle %d, class 0x%02x%02x%02x]",
			ba, opts.imtu, opts.omtu, opts.flush_to, opts.mode, conn.hci_handle,
			conn.dev_class[2], conn.dev_class[1], conn.dev_class[0]);

		/* Enable SO_LINGER */
		if (linger) {
			struct linger l = { .l_onoff = 1, .l_linger = linger };

			if (setsockopt(nsk, SOL_SOCKET, SO_LINGER, &l, sizeof(l)) < 0) {
				syslog(LOG_ERR, "Can't enable SO_LINGER: %s (%d)",
							strerror(errno), errno);
				close(nsk);
				goto error;
			}
		}

		handler(nsk);

		syslog(LOG_INFO, "Disconnect: %m");
		exit(0);
	}

	return;

error:
	close(sk);
	exit(1);
}

static void dump_mode(int sk)
{
	socklen_t optlen;
	int opt, len;

	syslog(LOG_INFO, "Receiving ...");
	while (1) {
		fd_set rset;

		FD_ZERO(&rset);