/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2000-2001 Qualcomm Incorporated
* Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
* Copyright (C) 2002-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* 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
#define _GNU_SOURCE
#include <stdio.h>
#include <stdbool.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <getopt.h>
#include <syslog.h>
#include <signal.h>
#include <sys/time.h>
#include <poll.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include "lib/bluetooth.h"
#include "lib/hci.h"
#include "lib/hci_lib.h"
#include "lib/l2cap.h"
#include "src/shared/util.h"
#define NIBBLE_TO_ASCII(c) ((c) < 0x0a ? (c) + 0x30 : (c) + 0x57)
#define BREDR_DEFAULT_PSM 0x1011
#define LE_DEFAULT_PSM 0x0080
#ifndef SIOCGSTAMP_OLD
#define SIOCGSTAMP_OLD SIOCGSTAMP
#endif
/* Test modes */
enum {
SEND,
RECV,
RECONNECT,
MULTY,
DUMP,
CONNECT,
CRECV,
LSEND,
SENDDUMP,
LSENDDUMP,
LSENDRECV,
CSENDRECV,
INFOREQ,
PAIRING,
};
static unsigned char *buf;
/* Default mtu */
static int imtu = 672;
static int omtu = 0;
/* Default FCS option */
static int fcs = 0x01;
/* Default Transmission Window */
static int txwin_size = 63;
/* Default Max Transmission */
static int max_transmit = 3;
/* Default data size */
static long data_size = -1;
static long buffer_size = 2048;
/* Default addr and psm and cid */
static bdaddr_t bdaddr;
static unsigned short psm = 0;
static unsigned short cid = 0;
/* Default number of frames to send (-1 = infinite) */
static int num_frames = -1;
/* Default number of consecutive frames before the delay */
static int count = 1;
/* Default delay after sending count number of frames */
static unsigned long send_delay = 0;
/* Default delay before receiving */
static unsigned long recv_delay = 0;
/* Default delay before disconnecting */
static unsigned long disc_delay = 0;
/* Initial sequence value when sending frames */
static int seq_start = 0;
static const char *filename = NULL;
static int rfcmode = 0;
static int master = 0;
static int auth = 0;
static int encr = 0;
static int secure = 0;
static int socktype = SOCK_SEQPACKET;
static int linger = 0;
static int reliable = 0;
static int timestamp = 0;
static int defer_setup = 0;
static int priority = -1;
static int rcvbuf = 0;
static int chan_policy = -1;
static int bdaddr_type = 0;
struct lookup_table {
const char *name;
int flag;
};
static struct lookup_table l2cap_modes[] = {
{ "basic", L2CAP_MODE_BASIC },
/* Not implemented
{ "flowctl", L2CAP_MODE_FLOWCTL },
{ "retrans", L2CAP_MODE_RETRANS },
*/
{ "ertm", L2CAP_MODE_ERTM },
{ "streaming", L2CAP_MODE_STREAMING },
{ 0 }
};
static struct lookup_table chan_policies[] = {
{ "bredr", BT_CHANNEL_POLICY_BREDR_ONLY },
{ "bredr_pref", BT_CHANNEL_POLICY_BREDR_PREFERRED },
{ "amp_pref", BT_CHANNEL_POLICY_AMP_PREFERRED },
{ NULL, 0 },
};
static struct lookup_table bdaddr_types[] = {
{ "bredr", BDADDR_BREDR },
{ "le_public", BDADDR_LE_PUBLIC },
{ "le_random", BDADDR_LE_RANDOM },
{ NULL, 0 },
};
static int get_lookup_flag(struct lookup_table *table, char *name)
{
int i;
for (i = 0; table[i].name; i++)
if (!strcasecmp(table[i].name, name))
return table[i].flag;
return -1;
}
static const char *get_lookup_str(struct lookup_table *table, int flag)
{
int i;
for (i = 0; table[i].name; i++)
if (table[i].flag == flag)
return table[i].name;
return NULL;
}
static void print_lookup_values(struct lookup_table *table, char *header)
{
int i;
printf("%s\n", header);
for (i = 0; table[i].name; i++)
printf("\t%s\n", table[i].name);
}
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(unsigned 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 getopts(int sk, struct l2cap_options *opts, bool connected)
{
socklen_t optlen;
int err;
memset(opts, 0, sizeof(*opts));
if (bdaddr_type == BDADDR_BREDR) {
optlen = sizeof(*opts);
return getsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, opts, &optlen);
}
optlen = sizeof(opts->imtu);
err = getsockopt(sk, SOL_BLUETOOTH, BT_RCVMTU, &opts->imtu, &optlen);
if (err < 0 || !connected)
return err;
optlen = sizeof(opts->omtu);
return getsockopt(sk, SOL_BLUETOOTH, BT_SNDMTU, &opts->omtu, &optlen);
}
static int setopts(int sk, struct l2cap_options *opts)
{
if (bdaddr_type == BDADDR_BREDR)
return setsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, opts,
sizeof(*opts));
return setsockopt(sk, SOL_BLUETOOTH, BT_RCVMTU, &opts->imtu,
sizeof(opts->imtu));
}
static int do_connect(char *svr)
{
struct sockaddr_l2 addr;
struct l2cap_options opts;
struct l2cap_conninfo conn;
socklen_t optlen;
int sk, 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);
return -1;
}
/* Bind to local address */
memset(&addr, 0, sizeof(addr));
addr.l2_family = AF_BLUETOOTH;
bacpy(&addr.l2_bdaddr, &bdaddr);
addr.l2_bdaddr_type = bdaddr_type;
if (cid)
addr.l2_cid = htobs(cid);
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 */
if (getopts(sk, &opts, false) < 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;
opts.mode = rfcmode;
opts.fcs = fcs;
opts.txwin_size = txwin_size;
opts.max_tx = max_transmit;
if (setopts(sk, &opts) < 0) {
syslog(LOG_ERR, "Can't set L2CAP options: %s (%d)",
strerror(errno), errno);
goto error;
}
#if 0
/* Enable SO_TIMESTAMP */
if (timestamp) {
int t = 1;
if (setsockopt(sk, SOL_SOCKET, SO_TIMESTAMP, &t, sizeof(t)) < 0) {
syslog(LOG_ERR, "Can't enable SO_TIMESTAMP: %s (%d)",
strerror(errno), errno);
goto error;
}
}
#endif
if (chan_policy != -1) {
if (setsockopt(sk, SOL_BLUETOOTH, BT_CHANNEL_POLICY,
&chan_policy, sizeof(chan_policy)) < 0) {
syslog(LOG_ERR, "Can't enable chan policy : %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);
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 (encr)
opt |= L2CAP_LM_ENCRYPT;
if (secure)
opt |= L2CAP_LM_SECURE;
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;
}
/* Set receive buffer size */
if (rcvbuf && setsockopt(sk, SOL_SOCKET, SO_RCVBUF,
&rcvbuf, sizeof(rcvbuf)) < 0) {
syslog(LOG_ERR, "Can't set socket rcv buf size: %s (%d)",
strerror(errno), errno);
goto error;
}
optlen = sizeof(rcvbuf);
if (getsockopt(sk, SOL_SOCKET, SO_RCVBUF, &rcvbuf, &optlen) < 0) {
syslog(LOG_ERR, "Can't get socket rcv buf size: %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_bdaddr_type = bdaddr_type;
if (cid)
addr.l2_cid = htobs(cid);
else if (psm)
addr.l2_psm = htobs(psm);
else
goto error;
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 */
if (getopts(sk, &opts, true) < 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;
}
if (priority > 0 && setsockopt(sk, SOL_SOCKET, SO_PRIORITY, &priority,
sizeof(priority)) < 0) {
syslog(LOG_ERR, "Can't set socket priority: %s (%d)",
strerror(errno), errno);
goto error;
}
if (getsockopt(sk, SOL_SOCKET, SO_PRIORITY, &opt, &optlen) < 0) {
syslog(LOG_ERR, "Can't get socket priority: %s (%d)",
strerror(errno), errno);
goto error;
}
/* Check for remote address */
memset(&addr, 0, sizeof(addr));
optlen = sizeof(addr);
if (getpeername(sk, (struct sockaddr *) &addr, &optlen) < 0) {
syslog(LOG_ERR, "Can't get socket name: %s (%d)",
strerror(errno), errno);
goto error;
}
ba2str(&addr.l2_bdaddr, ba);
syslog(LOG_INFO, "Connected to %s (%s, psm %d, scid %d)", ba,
get_lookup_str(bdaddr_types, addr.l2_bdaddr_type),
addr.l2_psm, addr.l2_cid);
/* Check for socket address */
memset(&addr, 0, sizeof(addr));
optlen = sizeof(addr);
if (getsockname(sk, (struct sockaddr *) &addr, &optlen) < 0) {
syslog(LOG_ERR, "Can't get socket name: %s (%d)",
strerror(errno), errno);
goto error;
}
ba2str(&addr.l2_bdaddr, ba);
syslog(LOG_INFO, "Local device %s (%s, psm %d, scid %d)", ba,
get_lookup_str(bdaddr_types, addr.l2_bdaddr_type),
addr.l2_psm, addr.l2_cid);
syslog(LOG_INFO, "Options [imtu %d, omtu %d, flush_to %d, "
"mode %d, handle %d, class 0x%02x%02x%02x, priority %d, rcvbuf %d]",
opts.imtu, opts.omtu, opts.flush_to, opts.mode, conn.hci_handle,
conn.dev_class[2], conn.dev_class[1], conn.dev_class[0], opt,
rcvbuf);
omtu = (opts.omtu > buffer_size) ? buffer_size : opts.omtu;
imtu = (opts.imtu > buffer_size) ? buffer_size : opts.imtu;
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 */
memset(&addr, 0, sizeof(addr));
addr.l2_family = AF_BLUETOOTH;
bacpy(&addr.l2_bdaddr, &bdaddr);
addr.l2_bdaddr_type = bdaddr_type;
if (cid)
addr.l2_cid = htobs(cid);
else if (psm)
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 (encr)
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 */
if (getopts(sk, &opts, false) < 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 (rfcmode > 0)
opts.mode = rfcmode;
opts.fcs = fcs;
opts.txwin_size = txwin_size;
opts.max_tx = max_transmit;
if (setopts(sk, &opts) < 0) {
syslog(LOG_ERR, "Can't set L2CAP options: %s (%d)",
strerror(errno), errno);
goto error;
}
if (socktype == SOCK_DGRAM) {
handler(sk);
close(sk);
return;
}
/* Enable deferred setup */
opt = defer_setup;
if (opt && setsockopt(sk, SOL_BLUETOOTH, BT_DEFER_SETUP,
&opt, sizeof(opt)) < 0) {
syslog(LOG_ERR, "Can't enable deferred setup : %s (%d)",
strerror(errno), errno);
goto error;
}
/* Listen for connections */
if (listen(sk, 10)) {
syslog(LOG_ERR, "Can not listen on the socket: %s (%d)",
strerror(errno), errno);
goto error;
}
/* Check for socket address */
memset(&addr, 0, sizeof(addr));
optlen = sizeof(addr);
if (getsockname(sk, (struct sockaddr *) &addr, &optlen) < 0) {
syslog(LOG_ERR, "Can't get socket name: %s (%d)",
strerror(errno), errno);
goto error;
}
psm = btohs(addr.l2_psm);
cid = btohs(addr.l2_cid);
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 */
/* Set receive buffer size */
if (rcvbuf && setsockopt(nsk, SOL_SOCKET, SO_RCVBUF, &rcvbuf,
sizeof(rcvbuf)) < 0) {
syslog(LOG_ERR, "Can't set rcv buf size: %s (%d)",
strerror(errno), errno);
goto error;
}
optlen = sizeof(rcvbuf);
if (getsockopt(nsk, SOL_SOCKET, SO_RCVBUF, &rcvbuf, &optlen)
< 0) {
syslog(LOG_ERR, "Can't get rcv buf size: %s (%d)",
strerror(errno), errno);
goto error;
}
/* Get current options */
if (getopts(nsk, &opts, true) < 0) {
syslog(LOG_ERR, "Can't get L2CAP options: %s (%d)",
strerror(errno), errno);
if (!defer_setup) {
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);
if (!defer_setup) {
close(nsk);
goto error;
}
}
if (priority > 0 && setsockopt(nsk, SOL_SOCKET, SO_PRIORITY,
&priority, sizeof(priority)) < 0) {
syslog(LOG_ERR, "Can't set socket priority: %s (%d)",
strerror(errno), errno);
close(nsk);
goto error;
}
optlen = sizeof(priority);
if (getsockopt(nsk, SOL_SOCKET, SO_PRIORITY, &opt, &optlen) < 0) {
syslog(LOG_ERR, "Can't get socket priority: %s (%d)",
strerror(errno), errno);
goto error;
}
ba2str(&addr.l2_bdaddr, ba);
syslog(LOG_INFO, "Connect from %s (%s, psm %d, dcid %d)", ba,
get_lookup_str(bdaddr_types, addr.l2_bdaddr_type),
addr.l2_psm, addr.l2_cid);
/* Check for socket address */
memset(&addr, 0, sizeof(addr));
optlen = sizeof(addr);
if (getsockname(nsk, (struct sockaddr *) &addr, &optlen) < 0) {
syslog(LOG_ERR, "Can't get socket name: %s (%d)",
strerror(errno), errno);
goto error;
}
ba2str(&addr.l2_bdaddr, ba);
syslog(LOG_INFO, "Local device %s (%s, psm %d, scid %d)", ba,
get_lookup_str(bdaddr_types, addr.l2_bdaddr_type),
addr.l2_psm, addr.l2_cid);
syslog(LOG_INFO, "Options [imtu %d, omtu %d, "
"flush_to %d, mode %d, handle %d, "
"class 0x%02x%02x%02x, priority %d, rcvbuf %d]",
opts.imtu, opts.omtu, opts.flush_to,
opts.mode, conn.hci_handle, conn.dev_class[2],
conn.dev_class[1], conn.dev_class[0], opt,
rcvbuf);
omtu = (opts.omtu > buffer_size) ? buffer_size : opts.omtu;
imtu = (opts.imtu > buffer_size) ? buffer_size : opts.imtu;
#if 0
/* Enable SO_TIMESTAMP */
if (timestamp) {
int t = 1;
if (setsockopt(nsk, SOL_SOCKET, SO_TIMESTAMP, &t, sizeof(t)) < 0) {
syslog(LOG_ERR, "Can't enable SO_TIMESTAMP: %s (%d)",
strerror(errno), errno);
goto error;
}
}
#endif
/* 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;
}
}
/* Handle deferred setup */
if (defer_setup) {
syslog(LOG_INFO, "Waiting for %d seconds",
abs(defer_setup) - 1);
sleep(abs(defer_setup) - 1);
if (defer_setup < 0) {
close(nsk);
goto error;
}
}
handler(nsk);
close(sk);
syslog(LOG_INFO, "Disconnect: %m");
exit(0);
}
error:
close(sk);
exit(1);
}
static void dump_mode(int sk)
{
socklen_t optlen;
int opt, len;
if (data_size < 0)
data_size = imtu;
if (defer_setup) {
len = read(sk, buf, data_size);
if (len < 0)
syslog(LOG_ERR, "Initial read error: %s (%d)",
strerror(errno), errno);
else
syslog(LOG_INFO, "Initial bytes %d", len);
}
syslog(LOG_INFO, "Receiving ...");
while (1) {
fd_set rset;
FD_ZERO(&rset);
FD_SET(sk, &rset);
if (select(sk + 1, &rset, NULL, NULL, NULL) < 0)
return;
if (!FD_ISSET(sk, &rset))
continue;
len = read(sk, buf, data_size);
if (len <= 0) {
if (len < 0) {
if (reliable && (errno == ECOMM)) {
syslog(LOG_INFO, "L2CAP Error ECOMM - clearing error and continuing.");
optlen = sizeof(opt);
if (getsockopt(sk, SOL_SOCKET, SO_ERROR, &opt, &optlen) < 0) {
syslog(LOG_ERR, "Couldn't getsockopt(SO_ERROR): %s (%d)",
strerror(errno), errno);
return;
}
continue;
} else {
syslog(LOG_ERR, "Read error: %s(%d)",
strerror(errno), errno);
}
}
return;
}
syslog(LOG_INFO, "Received %d bytes", len);
hexdump(buf, len);
}
}
static void recv_mode(int sk)
{
struct timeval tv_beg, tv_end, tv_diff;
struct pollfd p;
char ts[30];
long total;
uint32_t seq;
socklen_t optlen;
int opt, len;
if (data_size < 0)
data_size = imtu;
if (defer_setup) {
len = read(sk, buf, data_size);
if (len < 0)
syslog(LOG_ERR, "Initial read error: %s (%d)",
strerror(errno), errno);
else
syslog(LOG_INFO, "Initial bytes %d", len);
}
if (recv_delay)
usleep(recv_delay);
syslog(LOG_INFO, "Receiving ...");
memset(ts, 0, sizeof(ts));
p.fd = sk;
p.events = POLLIN | POLLERR | POLLHUP;
seq = 0;
while (1) {
gettimeofday(&tv_beg, NULL);
total = 0;
while (total < data_size) {
uint32_t sq;
uint16_t l;
int i;
p.revents = 0;
if (poll(&p, 1, -1) <= 0)
return;
if (p.revents & (POLLERR | POLLHUP))
return;
len = recv(sk, buf, data_size, 0);
if (len < 0) {
if (reliable && (errno == ECOMM)) {
syslog(LOG_INFO, "L2CAP Error ECOMM - clearing error and continuing.\n");
optlen = sizeof(opt);
if (getsockopt(sk, SOL_SOCKET, SO_ERROR, &opt, &optlen) < 0) {
syslog(LOG_ERR, "Couldn't getsockopt(SO_ERROR): %s (%d)",
strerror(errno), errno);
return;
}
continue;
} else {
syslog(LOG_ERR, "Read failed: %s (%d)",
strerror(errno), errno);
}
}
if (len < 6)
break;
if (timestamp) {
struct timeval tv;
if (ioctl(sk, SIOCGSTAMP_OLD, &tv) < 0) {
timestamp = 0;
memset(ts, 0, sizeof(ts));
} else {
sprintf(ts, "[%ld.%ld] ",
tv.tv_sec, tv.tv_usec);
}
}
/* Check sequence */
sq = get_le32(buf);
if (seq != sq) {
syslog(LOG_INFO, "seq missmatch: %d -> %d", seq, sq);
seq = sq;
}
seq++;
/* Check length */
l = get_le16(buf + 4);
if (len != l) {
syslog(LOG_INFO, "size missmatch: %d -> %d", len, l);
continue;
}
/* Verify data */
for (i = 6; i < len; i++) {
if (buf[i] != 0x7f)
syslog(LOG_INFO, "data missmatch: byte %d 0x%2.2x", i, buf[i]);
}
total += len;
}
gettimeofday(&tv_end, NULL);
timersub(&tv_end, &tv_beg, &tv_diff);
syslog(LOG_INFO,"%s%ld bytes in %.2f sec, %.2f kB/s", ts, total,
tv2fl(tv_diff), (float)(total / tv2fl(tv_diff) ) / 1024.0);
}
}
static void do_send(int sk)
{
uint32_t seq;
int i, fd, len, buflen, size, sent;
syslog(LOG_INFO, "Sending ...");
if (data_size < 0)
data_size = omtu;
if (filename) {
fd = open(filename, O_RDONLY);
if (fd < 0) {
syslog(LOG_ERR, "Open failed: %s (%d)",
strerror(errno), errno);
exit(1);
}
sent = 0;
size = read(fd, buf, data_size);
while (size > 0) {
buflen = (size > omtu) ? omtu : size;
len = send(sk, buf + sent, buflen, 0);
sent += len;
size -= len;
}
close(fd);
return;
} else {
for (i = 6; i < data_size; i++)
buf[i] = 0x7f;
}
if (!count && send_delay)
usleep(send_delay);
seq = seq_start;
while ((num_frames == -1) || (num_frames-- > 0)) {
put_le32(seq, buf);
put_le16(data_size, buf + 4);
seq++;
sent = 0;
size = data_size;
while (size > 0) {
buflen = (size > omtu) ? omtu : size;
len = send(sk, buf, buflen, 0);
if (len < 0 || len != buflen) {
syslog(LOG_ERR, "Send failed: %s (%d)",
strerror(errno), errno);
exit(1);
}
sent += len;
size -= len;
}
if (num_frames && send_delay && count &&
!(seq % (count + seq_start)))
usleep(send_delay);
}
}
static void send_mode(int sk)
{
do_send(sk);
if (disc_delay)
usleep(disc_delay);
syslog(LOG_INFO, "Closing channel ...");
if (shutdown(sk, SHUT_RDWR) < 0)
syslog(LOG_INFO, "Close failed: %m");
else
syslog(LOG_INFO, "Done");
}
static void senddump_mode(int sk)
{
do_send(sk);
dump_mode(sk);
}
static void send_and_recv_mode(int sk)
{
int flags;
if ((flags = fcntl(sk, F_GETFL, 0)) < 0)
flags = 0;
fcntl(sk, F_SETFL, flags | O_NONBLOCK);
/* fork for duplex channel */
if (fork())
send_mode(sk);
else
recv_mode(sk);
return;
}
static void reconnect_mode(char *svr)
{
while (1) {
int sk = do_connect(svr);
close(sk);
}
}
static void connect_mode(char *svr)
{
struct pollfd p;
int sk;
if ((sk = do_connect(svr)) < 0)
exit(1);
p.fd = sk;
p.events = POLLERR | POLLHUP;
while (1) {
p.revents = 0;
if (poll(&p, 1, 500))
break;
}
syslog(LOG_INFO, "Disconnected");
close(sk);
}
static void multi_connect_mode(int argc, char *argv[])
{
int i, n, sk;
while (1) {
for (n = 0; n < argc; n++) {
for (i = 0; i < count; i++) {
if (fork())
continue;
/* Child */
sk = do_connect(argv[n]);
usleep(500);
close(sk);
exit(0);
}
}
sleep(4);
}
}
static void info_request(char *svr)
{
unsigned char buf[48];
l2cap_cmd_hdr *cmd = (l2cap_cmd_hdr *) buf;
l2cap_info_req *req = (l2cap_info_req *) (buf + L2CAP_CMD_HDR_SIZE);
l2cap_info_rsp *rsp = (l2cap_info_rsp *) (buf + L2CAP_CMD_HDR_SIZE);
uint16_t mtu;
uint32_t channels, mask = 0x0000;
struct sockaddr_l2 addr;
int sk, err;
sk = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_L2CAP);
if (sk < 0) {
perror("Can't create socket");
return;
}
memset(&addr, 0, sizeof(addr));
addr.l2_family = AF_BLUETOOTH;
bacpy(&addr.l2_bdaddr, &bdaddr);
addr.l2_bdaddr_type = bdaddr_type;
if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
perror("Can't bind socket");
goto failed;
}
memset(&addr, 0, sizeof(addr));
addr.l2_family = AF_BLUETOOTH;
str2ba(svr, &addr.l2_bdaddr);
addr.l2_bdaddr_type = bdaddr_type;
if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0 ) {
perror("Can't connect socket");
goto failed;
}
memset(buf, 0, sizeof(buf));
cmd->code = L2CAP_INFO_REQ;
cmd->ident = 141;
cmd->len = htobs(2);
req->type = htobs(0x0001);
if (send(sk, buf, L2CAP_CMD_HDR_SIZE + L2CAP_INFO_REQ_SIZE, 0) < 0) {
perror("Can't send info request");
goto failed;
}
err = recv(sk, buf, L2CAP_CMD_HDR_SIZE + L2CAP_INFO_RSP_SIZE + 2, 0);
if (err < 0) {
perror("Can't receive info response");
goto failed;
}
switch (btohs(rsp->result)) {
case 0x0000:
memcpy(&mtu, rsp->data, sizeof(mtu));
printf("Connectionless MTU size is %d\n", btohs(mtu));
break;
case 0x0001:
printf("Connectionless MTU is not supported\n");
break;
}
memset(buf, 0, sizeof(buf));
cmd->code = L2CAP_INFO_REQ;
cmd->ident = 142;
cmd->len = htobs(2);
req->type = htobs(0x0002);
if (send(sk, buf, L2CAP_CMD_HDR_SIZE + L2CAP_INFO_REQ_SIZE, 0) < 0) {
perror("Can't send info request");
goto failed;
}
err = recv(sk, buf, L2CAP_CMD_HDR_SIZE + L2CAP_INFO_RSP_SIZE + 4, 0);
if (err < 0) {
perror("Can't receive info response");
goto failed;
}
switch (btohs(rsp->result)) {
case 0x0000:
memcpy(&mask, rsp->data, sizeof(mask));
printf("Extended feature mask is 0x%04x\n", btohl(mask));
if (mask & L2CAP_FEAT_FLOWCTL)
printf(" Flow control mode\n");
if (mask & L2CAP_FEAT_RETRANS)
printf(" Retransmission mode\n");
if (mask & L2CAP_FEAT_BIDIR_QOS)
printf(" Bi-directional QoS\n");
if (mask & L2CAP_FEAT_ERTM)
printf(" Enhanced Retransmission mode\n");
if (mask & L2CAP_FEAT_STREAMING)
printf(" Streaming mode\n");
if (mask & L2CAP_FEAT_FCS)
printf(" FCS Option\n");
if (mask & L2CAP_FEAT_EXT_FLOW)
printf(" Extended Flow Specification\n");
if (mask & L2CAP_FEAT_FIXED_CHAN)
printf(" Fixed Channels\n");
if (mask & L2CAP_FEAT_EXT_WINDOW)
printf(" Extended Window Size\n");
if (mask & L2CAP_FEAT_UCD)
printf(" Unicast Connectionless Data Reception\n");
break;
case 0x0001:
printf("Extended feature mask is not supported\n");
break;
}
if (!(mask & 0x80))
goto failed;
memset(buf, 0, sizeof(buf));
cmd->code = L2CAP_INFO_REQ;
cmd->ident = 143;
cmd->len = htobs(2);
req->type = htobs(0x0003);
if (send(sk, buf, L2CAP_CMD_HDR_SIZE + L2CAP_INFO_REQ_SIZE, 0) < 0) {
perror("Can't send info request");
goto failed;
}
err = recv(sk, buf, L2CAP_CMD_HDR_SIZE + L2CAP_INFO_RSP_SIZE + 8, 0);
if (err < 0) {
perror("Can't receive info response");
goto failed;
}
switch (btohs(rsp->result)) {
case 0x0000:
memcpy(&channels, rsp->data, sizeof(channels));
printf("Fixed channels list is 0x%04x\n", btohl(channels));
break;
case 0x0001:
printf("Fixed channels list is not supported\n");
break;
}
failed:
close(sk);
}
static void do_pairing(char *svr)
{
struct sockaddr_l2 addr;
int sk, opt;
sk = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_L2CAP);
if (sk < 0) {
perror("Can't create socket");
return;
}
memset(&addr, 0, sizeof(addr));
addr.l2_family = AF_BLUETOOTH;
bacpy(&addr.l2_bdaddr, &bdaddr);
addr.l2_bdaddr_type = bdaddr_type;
if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
perror("Can't bind socket");
goto failed;
}
if (secure)
opt = L2CAP_LM_SECURE;
else
opt = L2CAP_LM_ENCRYPT;
if (setsockopt(sk, SOL_L2CAP, L2CAP_LM, &opt, sizeof(opt)) < 0) {
perror("Can't set link mode");
goto failed;
}
memset(&addr, 0, sizeof(addr));
addr.l2_family = AF_BLUETOOTH;
str2ba(svr, &addr.l2_bdaddr);
addr.l2_bdaddr_type = bdaddr_type;
if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0 ) {
perror("Can't connect socket");
goto failed;
}
printf("Pairing successful\n");
failed:
close(sk);
}
static void usage(void)
{
printf("l2test - L2CAP testing\n"
"Usage:\n");
printf("\tl2test <mode> [options] [bdaddr]\n");
printf("Modes:\n"
"\t-r listen and receive\n"
"\t-w listen and send\n"
"\t-d listen and dump incoming data\n"
"\t-x listen, then send, then dump incoming data\n"
"\t-t listen, then send and receive at the same time\n"
"\t-q connect, then send and receive at the same time\n"
"\t-s connect and send\n"
"\t-u connect and receive\n"
"\t-n connect and be silent\n"
"\t-y connect, then send, then dump incoming data\n"
"\t-c connect, disconnect, connect, ...\n"
"\t-m multiple connects\n"
"\t-p trigger dedicated bonding\n"
"\t-z information request\n");
printf("Options:\n"
"\t[-b bytes] [-i device] [-P psm] [-J cid]\n"
"\t[-I imtu] [-O omtu]\n"
"\t[-L seconds] enable SO_LINGER\n"
"\t[-W seconds] enable deferred setup\n"
"\t[-B filename] use data packets from file\n"
"\t[-N num] send num frames (default = infinite)\n"
"\t[-C num] send num frames before delay (default = 1)\n"
"\t[-D milliseconds] delay after sending num frames (default = 0)\n"
"\t[-K milliseconds] delay before receiving (default = 0)\n"
"\t[-g milliseconds] delay before disconnecting (default = 0)\n"
"\t[-X mode] l2cap mode (help for list, default = basic)\n"
"\t[-a policy] chan policy (help for list, default = bredr)\n"
"\t[-F fcs] use CRC16 check (default = 1)\n"
"\t[-Q num] Max Transmit value (default = 3)\n"
"\t[-Z size] Transmission Window size (default = 63)\n"
"\t[-Y priority] socket priority\n"
"\t[-H size] Maximum receive buffer size\n"
"\t[-R] reliable mode\n"
"\t[-G] use connectionless channel (datagram)\n"
"\t[-U] use sock stream\n"
"\t[-A] request authentication\n"
"\t[-E] request encryption\n"
"\t[-S] secure connection\n"
"\t[-M] become master\n"
"\t[-T] enable timestamps\n"
"\t[-V type] address type (help for list, default = bredr)\n"
"\t[-e seq] initial sequence value (default = 0)\n");
}
int main(int argc, char *argv[])
{
struct sigaction sa;
int opt, sk, mode = RECV, need_addr = 0;
bacpy(&bdaddr, BDADDR_ANY);
while ((opt = getopt(argc, argv, "a:b:cde:g:i:mnpqrstuwxyz"
"AB:C:D:EF:GH:I:J:K:L:MN:O:P:Q:RSTUV:W:X:Y:Z:")) != EOF) {
switch (opt) {
case 'r':
mode = RECV;
break;
case 's':
mode = SEND;
need_addr = 1;
break;
case 'w':
mode = LSEND;
break;
case 'u':
mode = CRECV;
need_addr = 1;
break;
case 'd':
mode = DUMP;
break;
case 'c':
mode = RECONNECT;
need_addr = 1;
break;
case 'n':
mode = CONNECT;
need_addr = 1;
break;
case 'm':
mode = MULTY;
need_addr = 1;
break;
case 't':
mode = LSENDRECV;
break;
case 'q':
mode = CSENDRECV;
need_addr = 1;
break;
case 'x':
mode = LSENDDUMP;
break;
case 'y':
mode = SENDDUMP;
break;
case 'z':
mode = INFOREQ;
need_addr = 1;
break;
case 'p':
mode = PAIRING;
need_addr = 1;
break;
case 'b':
data_size = atoi(optarg);
break;
case 'i':
if (!strncasecmp(optarg, "hci", 3))
hci_devba(atoi(optarg + 3), &bdaddr);
else
str2ba(optarg, &bdaddr);
break;
case 'P':
psm = atoi(optarg);
break;
case 'I':
imtu = atoi(optarg);
break;
case 'O':
omtu = atoi(optarg);
break;
case 'L':
linger = atoi(optarg);
break;
case 'W':
defer_setup = atoi(optarg);
break;
case 'B':
filename = optarg;
break;
case 'N':
num_frames = atoi(optarg);
break;
case 'C':
count = atoi(optarg);
break;
case 'D':
send_delay = atoi(optarg) * 1000;
break;
case 'K':
recv_delay = atoi(optarg) * 1000;
break;
case 'X':
rfcmode = get_lookup_flag(l2cap_modes, optarg);
if (rfcmode == -1) {
print_lookup_values(l2cap_modes,
"List L2CAP modes:");
exit(1);
}
break;
case 'a':
chan_policy = get_lookup_flag(chan_policies, optarg);
if (chan_policy == -1) {
print_lookup_values(chan_policies,
"List L2CAP chan policies:");
exit(1);
}
break;
case 'Y':
priority = atoi(optarg);
break;
case 'F':
fcs = atoi(optarg);
break;
case 'R':
reliable = 1;
break;
case 'M':
master = 1;
break;
case 'A':
auth = 1;
break;
case 'E':
encr = 1;
break;
case 'S':
secure = 1;
break;
case 'G':
socktype = SOCK_DGRAM;
break;
case 'U':
socktype = SOCK_STREAM;
break;
case 'T':
timestamp = 1;
break;
case 'Q':
max_transmit = atoi(optarg);
break;
case 'Z':
txwin_size = atoi(optarg);
break;
case 'J':
cid = atoi(optarg);
break;
case 'H':
rcvbuf = atoi(optarg);
break;
case 'V':
bdaddr_type = get_lookup_flag(bdaddr_types, optarg);
if (bdaddr_type == -1) {
print_lookup_values(bdaddr_types,
"List Address types:");
exit(1);
}
break;
case 'e':
seq_start = atoi(optarg);
break;
case 'g':
disc_delay = atoi(optarg) * 1000;
break;
default:
usage();
exit(1);
}
}
if (!psm) {
if (bdaddr_type == BDADDR_BREDR)
psm = BREDR_DEFAULT_PSM;
else
psm = LE_DEFAULT_PSM;
}
if (need_addr && !(argc - optind)) {
usage();
exit(1);
}
if (data_size < 0)
buffer_size = (omtu > imtu) ? omtu : imtu;
else
buffer_size = data_size;
if (!(buf = malloc(buffer_size))) {
perror("Can't allocate data buffer");
exit(1);
}
memset(&sa, 0, sizeof(sa));
sa.sa_handler = SIG_IGN;
sa.sa_flags = SA_NOCLDSTOP;
sigaction(SIGCHLD, &sa, NULL);
openlog("l2test", LOG_PERROR | LOG_PID, LOG_LOCAL0);
switch (mode) {
case RECV:
do_listen(recv_mode);
break;
case CRECV:
sk = do_connect(argv[optind]);
if (sk < 0)
exit(1);
recv_mode(sk);
break;
case DUMP:
do_listen(dump_mode);
break;
case SEND:
sk = do_connect(argv[optind]);
if (sk < 0)
exit(1);
send_mode(sk);
break;
case LSEND:
do_listen(send_mode);
break;
case RECONNECT:
reconnect_mode(argv[optind]);
break;
case MULTY:
multi_connect_mode(argc - optind, argv + optind);
break;
case CONNECT:
connect_mode(argv[optind]);
break;
case SENDDUMP:
sk = do_connect(argv[optind]);
if (sk < 0)
exit(1);
senddump_mode(sk);
break;
case LSENDDUMP:
do_listen(senddump_mode);
break;
case LSENDRECV:
do_listen(send_and_recv_mode);
break;
case CSENDRECV:
sk = do_connect(argv[optind]);
if (sk < 0)
exit(1);
send_and_recv_mode(sk);
break;
case INFOREQ:
info_request(argv[optind]);
exit(0);
case PAIRING:
do_pairing(argv[optind]);
exit(0);
}
syslog(LOG_INFO, "Exit");
closelog();
return 0;
}