Add HCI emulation tool

2 files changed, 1357 insertions, 2 deletions

diff --git a/test/Makefile.am b/test/Makefile.am
index e63e37be..751fa50c 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -1,8 +1,12 @@
 
 if TEST
+sbin_PROGRAMS = hciemu
+
 bin_PROGRAMS = l2test rctest
 
-noinst_PROGRAMS	= scotest attest hstest bdaddr
+noinst_PROGRAMS = scotest attest hstest bdaddr
+
+hciemu_LDADD = @BLUEZ_LIBS@ $(top_builddir)/common/libglib-ectomy.a
 
 l2test_LDADD = @BLUEZ_LIBS@
 
@@ -23,7 +27,7 @@ noinst_MANS = bdaddr.8
 AM_CFLAGS = @BLUEZ_CFLAGS@
 endif
 
-INCLUDES = -I$(top_srcdir)/tools
+INCLUDES = -I$(top_srcdir)/common -I$(top_srcdir)/tools
 
 EXTRA_DIST = hsplay hsmicro bdaddr.8
 
diff --git a/test/hciemu.c b/test/hciemu.c
new file mode 100644
index 00000000..be033c2a
--- /dev/null
+++ b/test/hciemu.c
@@ -0,0 +1,1351 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2000-2002  Maxim Krasnyansky <maxk@qualcomm.com>
+ *  Copyright (C) 2003-2005  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
+
+#include <stdio.h>
+#include <errno.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <signal.h>
+#include <getopt.h>
+#include <syslog.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/resource.h>
+
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/hci.h>
+#include <bluetooth/hci_lib.h>
+
+#include <netdb.h>
+
+#include "glib-ectomy.h"
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+static inline uint64_t ntoh64(uint64_t n)
+{
+	uint64_t h;
+	uint64_t tmp = ntohl(n & 0x00000000ffffffff);
+	h = ntohl(n >> 32);
+	h |= tmp << 32;
+	return h;
+}
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#define ntoh64(x) (x)
+#else
+#error "Unknown byte order"
+#endif
+#define hton64(x) ntoh64(x)
+
+#define GHCI_DEV		"/dev/ghci"
+
+#define VHCI_DEV		"/dev/vhci"
+#define VHCI_UDEV		"/dev/hci_vhci"
+
+#define VHCI_MAX_CONN		12
+
+#define VHCI_ACL_MTU		192
+#define VHCI_ACL_MAX_PKT	8
+
+struct vhci_device {
+	uint8_t		features[8];
+	uint8_t		name[248];
+	uint8_t		dev_class[3];
+	uint8_t		inq_mode;
+	uint8_t		eir_fec;
+	uint8_t		eir_data[240];
+	uint16_t	acl_cnt;
+	bdaddr_t	bdaddr;
+	int		fd;
+	int		dd;
+	GIOChannel	*scan;
+};
+
+struct vhci_conn {
+	bdaddr_t	dest;
+	uint16_t	handle;
+	GIOChannel	*chan;
+};
+
+struct vhci_link_info {
+	bdaddr_t	bdaddr;
+	uint8_t		dev_class[3];
+	uint8_t		link_type;
+	uint8_t		role;
+} __attribute__ ((packed));
+
+static struct vhci_device vdev;
+static struct vhci_conn *vconn[VHCI_MAX_CONN];
+
+struct btsnoop_hdr {
+	uint8_t		id[8];		/* Identification Pattern */
+	uint32_t	version;	/* Version Number = 1 */
+	uint32_t	type;		/* Datalink Type */
+} __attribute__ ((packed));
+#define BTSNOOP_HDR_SIZE (sizeof(struct btsnoop_hdr))
+
+struct btsnoop_pkt {
+	uint32_t	size;		/* Original Length */
+	uint32_t	len;		/* Included Length */
+	uint32_t	flags;		/* Packet Flags */
+	uint32_t	drops;		/* Cumulative Drops */
+	uint64_t	ts;		/* Timestamp microseconds */
+	uint8_t		data[0];	/* Packet Data */
+} __attribute__ ((packed));
+#define BTSNOOP_PKT_SIZE (sizeof(struct btsnoop_pkt))
+
+static uint8_t btsnoop_id[] = { 0x62, 0x74, 0x73, 0x6e, 0x6f, 0x6f, 0x70, 0x00 };
+
+static GMainLoop *event_loop;
+
+static volatile sig_atomic_t __io_canceled;
+
+static inline void io_init(void)
+{
+	__io_canceled = 0;
+}
+
+static inline void io_cancel(void)
+{
+	__io_canceled = 1;
+}
+
+static void sig_term(int sig)
+{
+	io_cancel();
+	g_main_quit(event_loop);
+}
+
+static gboolean io_acl_data(GIOChannel *chan, GIOCondition cond, gpointer data);
+static gboolean io_conn_ind(GIOChannel *chan, GIOCondition cond, gpointer data);
+static gboolean io_hci_data(GIOChannel *chan, GIOCondition cond, gpointer data);
+
+static inline int read_n(int fd, void *buf, int len)
+{
+	register int w, t = 0;
+
+	while (!__io_canceled && len > 0) {
+		if ((w = read(fd, buf, len)) < 0 ){
+			if( errno == EINTR || errno == EAGAIN )
+				continue;
+			return -1;
+		}
+		if (!w)
+			return 0;
+		len -= w; buf += w; t += w;
+	}
+	return t;
+}
+
+/* Write exactly len bytes (Signal safe)*/
+static inline int write_n(int fd, void *buf, int len)
+{
+	register int w, t = 0;
+
+	while (!__io_canceled && len > 0) {
+		if ((w = write(fd, buf, len)) < 0 ){
+			if( errno == EINTR || errno == EAGAIN )
+				continue;
+			return -1;
+		}
+		if (!w)
+			return 0;
+		len -= w; buf += w; t += w;
+	}
+	return t;
+}
+
+static int create_snoop(char *file)
+{
+	struct btsnoop_hdr hdr;
+	int fd, len;
+
+	fd = open(file, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+	if (fd < 0)
+		return fd;
+
+	memcpy(hdr.id, btsnoop_id, sizeof(btsnoop_id));
+	hdr.version = htonl(1);
+	hdr.type = htonl(1002);
+
+	len = write(fd, &hdr, BTSNOOP_HDR_SIZE);
+	if (len < 0) {
+		close(fd);
+		return -EIO;
+	}
+
+	if (len != BTSNOOP_HDR_SIZE) {
+		close(fd);
+		return -1;
+	}
+
+	return fd;
+}
+
+static int write_snoop(int fd, int type, int incoming, unsigned char *buf, int len)
+{
+	struct btsnoop_pkt pkt;
+	struct timeval tv;
+	uint32_t size = len;
+	uint64_t ts;
+
+	if (fd < 0)
+		return -1;
+
+	memset(&tv, 0, sizeof(tv));
+	gettimeofday(&tv, NULL);
+	ts = (tv.tv_sec - 946684800ll) * 1000000ll + tv.tv_usec;
+
+	pkt.size = htonl(size);
+	pkt.len  = pkt.size;
+	pkt.flags = ntohl(incoming & 0x01);
+	pkt.drops = htonl(0);
+	pkt.ts = hton64(ts + 0x00E03AB44A676000ll);
+
+	if (type == HCI_COMMAND_PKT || type == HCI_EVENT_PKT)
+		pkt.flags |= ntohl(0x02);
+
+	write(fd, &pkt, BTSNOOP_PKT_SIZE);
+	write(fd, buf, size);
+
+	return 0;
+}
+
+static struct vhci_conn *conn_get_by_bdaddr(bdaddr_t *ba)
+{
+	register int i;
+
+	for (i = 0; i < VHCI_MAX_CONN; i++)
+		if (!bacmp(&vconn[i]->dest, ba))
+			return vconn[i];
+
+	return NULL;
+}
+
+static void command_status(uint16_t ogf, uint16_t ocf, uint8_t status)
+{
+	uint8_t buf[HCI_MAX_FRAME_SIZE], *ptr = buf;
+	evt_cmd_status *cs;
+	hci_event_hdr *he;
+
+	/* Packet type */
+	*ptr++ = HCI_EVENT_PKT;
+
+	/* Event header */
+	he = (void *) ptr; ptr += HCI_EVENT_HDR_SIZE;
+
+	he->evt  = EVT_CMD_STATUS;
+	he->plen = EVT_CMD_STATUS_SIZE;
+
+	cs = (void *) ptr; ptr += EVT_CMD_STATUS_SIZE;
+
+	cs->status = status;
+	cs->ncmd   = 1;
+	cs->opcode = htobs(cmd_opcode_pack(ogf, ocf));
+
+	write_snoop(vdev.dd, HCI_EVENT_PKT, 1, buf, ptr - buf);
+
+	if (write(vdev.fd, buf, ptr - buf) < 0)
+		syslog(LOG_ERR, "Can't send event: %s(%d)",
+						strerror(errno), errno);
+}
+
+static void command_complete(uint16_t ogf, uint16_t ocf, int plen, void *data)
+{
+	uint8_t buf[HCI_MAX_FRAME_SIZE], *ptr = buf;
+	evt_cmd_complete *cc;
+	hci_event_hdr *he;
+
+	/* Packet type */
+	*ptr++ = HCI_EVENT_PKT;
+
+	/* Event header */
+	he = (void *) ptr; ptr += HCI_EVENT_HDR_SIZE;
+
+	he->evt  = EVT_CMD_COMPLETE;
+	he->plen = EVT_CMD_COMPLETE_SIZE + plen; 
+
+	cc = (void *) ptr; ptr += EVT_CMD_COMPLETE_SIZE;
+
+	cc->ncmd = 1;
+	cc->opcode = htobs(cmd_opcode_pack(ogf, ocf));
+
+	if (plen) {
+		memcpy(ptr, data, plen);
+		ptr += plen;
+	}
+
+	write_snoop(vdev.dd, HCI_EVENT_PKT, 1, buf, ptr - buf);
+
+	if (write(vdev.fd, buf, ptr - buf) < 0)
+		syslog(LOG_ERR, "Can't send event: %s(%d)",
+						strerror(errno), errno);
+}
+
+static void connect_request(struct vhci_conn *conn)
+{
+	uint8_t buf[HCI_MAX_FRAME_SIZE], *ptr = buf;
+	evt_conn_request *cr;
+	hci_event_hdr *he;
+
+	/* Packet type */
+	*ptr++ = HCI_EVENT_PKT;
+
+	/* Event header */
+	he = (void *) ptr; ptr += HCI_EVENT_HDR_SIZE;
+
+	he->evt  = EVT_CONN_REQUEST;
+	he->plen = EVT_CONN_REQUEST_SIZE; 
+
+	cr = (void *) ptr; ptr += EVT_CONN_REQUEST_SIZE;
+
+	bacpy(&cr->bdaddr, &conn->dest);
+	memset(&cr->dev_class, 0, sizeof(cr->dev_class));
+	cr->link_type = ACL_LINK;
+
+	write_snoop(vdev.dd, HCI_EVENT_PKT, 1, buf, ptr - buf);
+
+	if (write(vdev.fd, buf, ptr - buf) < 0)
+		syslog(LOG_ERR, "Can't send event: %s (%d)",
+						strerror(errno), errno);
+}
+
+static void connect_complete(struct vhci_conn *conn)
+{
+	uint8_t buf[HCI_MAX_FRAME_SIZE], *ptr = buf;
+	evt_conn_complete *cc;
+	hci_event_hdr *he;
+
+	/* Packet type */
+	*ptr++ = HCI_EVENT_PKT;
+
+	/* Event header */
+	he = (void *) ptr; ptr += HCI_EVENT_HDR_SIZE;
+
+	he->evt  = EVT_CONN_COMPLETE;
+	he->plen = EVT_CONN_COMPLETE_SIZE; 
+
+	cc = (void *) ptr; ptr += EVT_CONN_COMPLETE_SIZE;
+
+	bacpy(&cc->bdaddr, &conn->dest);
+	cc->status = 0x00;
+	cc->handle = htobs(conn->handle);
+	cc->link_type = ACL_LINK;
+	cc->encr_mode = 0x00;
+
+	write_snoop(vdev.dd, HCI_EVENT_PKT, 1, buf, ptr - buf);
+
+	if (write(vdev.fd, buf, ptr - buf) < 0)
+		syslog(LOG_ERR, "Can't send event: %s (%d)",
+						strerror(errno), errno);
+}
+
+static void disconn_complete(struct vhci_conn *conn)
+{
+	uint8_t buf[HCI_MAX_FRAME_SIZE], *ptr = buf;
+	evt_disconn_complete *dc;
+	hci_event_hdr *he;
+
+	/* Packet type */
+	*ptr++ = HCI_EVENT_PKT;
+
+	/* Event header */
+	he = (void *) ptr; ptr += HCI_EVENT_HDR_SIZE;
+
+	he->evt  = EVT_DISCONN_COMPLETE;
+	he->plen = EVT_DISCONN_COMPLETE_SIZE;
+
+	dc = (void *) ptr; ptr += EVT_DISCONN_COMPLETE_SIZE;
+
+	dc->status = 0x00;
+	dc->handle = htobs(conn->handle);
+	dc->reason = 0x00;
+
+	write_snoop(vdev.dd, HCI_EVENT_PKT, 1, buf, ptr - buf);
+
+	if (write(vdev.fd, buf, ptr - buf) < 0)
+		syslog(LOG_ERR, "Can't send event: %s (%d)",
+						strerror(errno), errno);
+
+	vdev.acl_cnt = 0;
+}
+
+static void num_completed_pkts(struct vhci_conn *conn)
+{
+	uint8_t buf[HCI_MAX_FRAME_SIZE], *ptr = buf;
+	evt_num_comp_pkts *np;
+	hci_event_hdr *he;
+
+	/* Packet type */
+	*ptr++ = HCI_EVENT_PKT;
+
+	/* Event header */
+	he = (void *) ptr; ptr += HCI_EVENT_HDR_SIZE;
+
+	he->evt  = EVT_NUM_COMP_PKTS;
+	he->plen = EVT_NUM_COMP_PKTS_SIZE;
+
+	np = (void *) ptr; ptr += EVT_NUM_COMP_PKTS_SIZE;
+	np->num_hndl = 1;
+
+	*((uint16_t *) ptr) = htobs(conn->handle); ptr += 2;
+	*((uint16_t *) ptr) = htobs(vdev.acl_cnt); ptr += 2;
+
+	write_snoop(vdev.dd, HCI_EVENT_PKT, 1, buf, ptr - buf);
+
+	if (write(vdev.fd, buf, ptr - buf) < 0)
+		syslog(LOG_ERR, "Can't send event: %s (%d)",
+						strerror(errno), errno);
+}
+
+static int scan_enable(uint8_t *data)
+{
+	struct sockaddr_in sa;
+	GIOChannel *sk_io;
+	bdaddr_t ba;
+	int sk, opt;
+
+	if (!(*data & SCAN_PAGE)) {
+		if (vdev.scan) {
+			g_io_channel_close(vdev.scan);
+			vdev.scan = NULL;
+		}
+		return 0;
+	}
+
+	if (vdev.scan)
+		return 0;
+
+	if ((sk = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+		syslog(LOG_ERR, "Can't create socket: %s (%d)",
+						strerror(errno), errno);
+		return 1;
+	}
+
+	opt = 1;
+	setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
+
+	baswap(&ba, &vdev.bdaddr);
+	sa.sin_family = AF_INET;
+	sa.sin_addr.s_addr = *(uint32_t *) &ba;
+	sa.sin_port = *(uint16_t *) &ba.b[4];
+	if (bind(sk, (struct sockaddr *) &sa, sizeof(sa))) {
+		syslog(LOG_ERR, "Can't bind socket: %s (%d)",
+						strerror(errno), errno);
+		goto failed;
+	}
+
+	if (listen(sk, 10)) {
+		syslog(LOG_ERR, "Can't listen on socket: %s (%d)",
+						strerror(errno), errno);
+		goto failed;
+	}
+
+	sk_io = g_io_channel_unix_new(sk);
+	g_io_add_watch(sk_io, G_IO_IN | G_IO_NVAL, io_conn_ind, NULL);
+	vdev.scan = sk_io;
+	return 0;
+
+failed:
+	close(sk);
+	return 1;
+}
+
+static void accept_connection(uint8_t *data)
+{
+	accept_conn_req_cp *cp = (void *) data;
+	struct vhci_conn *conn;
+
+	if (!(conn = conn_get_by_bdaddr(&cp->bdaddr)))
+		return;
+
+	connect_complete(conn);
+
+	g_io_add_watch(conn->chan, G_IO_IN | G_IO_NVAL | G_IO_HUP,
+			io_acl_data, (gpointer) conn);
+}
+
+static void close_connection(struct vhci_conn *conn)
+{
+	syslog(LOG_INFO, "Closing connection %s handle %d",
+					batostr(&conn->dest), conn->handle);
+
+	g_io_channel_close(conn->chan);
+
+	vconn[conn->handle - 1] = NULL;
+	disconn_complete(conn);
+	free(conn);
+}
+
+static void disconnect(uint8_t *data)
+{
+	disconnect_cp *cp = (void *) data;
+	struct vhci_conn *conn;
+	uint16_t handle;
+
+	handle = btohs(cp->handle);
+
+	if (handle - 1 > VHCI_MAX_CONN)
+		return;
+
+	if (!(conn = vconn[handle-1]))
+		return;
+
+	close_connection(conn);
+}
+
+static void create_connection(uint8_t *data)
+{
+	create_conn_cp *cp = (void *) data;
+	struct vhci_link_info info;
+	struct vhci_conn *conn;
+	struct sockaddr_in sa;
+	int h, sk, opt;
+	bdaddr_t ba;
+
+	for (h = 0; h < VHCI_MAX_CONN; h++)
+		if (!vconn[h])
+			goto do_connect;
+
+	syslog(LOG_ERR, "Too many connections");
+	return;
+
+do_connect:
+	if ((sk = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+		syslog(LOG_ERR, "Can't create socket: %s (%d)",
+						strerror(errno), errno);
+		return;
+	}
+
+	opt = 1;
+	setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
+
+	baswap(&ba, &vdev.bdaddr);
+	sa.sin_family = AF_INET;
+	sa.sin_addr.s_addr = INADDR_ANY;	// *(uint32_t *) &ba;
+	sa.sin_port = 0;			// *(uint16_t *) &ba.b[4];
+	if (bind(sk, (struct sockaddr *) &sa, sizeof(sa))) {
+		syslog(LOG_ERR, "Can't bind socket: %s (%d)",
+						strerror(errno), errno);
+		close(sk);
+		return;
+	}
+
+	baswap(&ba, &cp->bdaddr);
+	sa.sin_family = AF_INET;
+	sa.sin_addr.s_addr = *(uint32_t *) &ba;
+	sa.sin_port = *(uint16_t *) &ba.b[4];
+	if (connect(sk, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
+		syslog(LOG_ERR, "Can't connect: %s (%d)",
+						strerror(errno), errno);
+		close(sk);
+		return;
+	}
+
+	/* Send info */
+	memset(&info, 0, sizeof(info));
+	bacpy(&info.bdaddr, &vdev.bdaddr);
+	info.link_type = ACL_LINK;
+	info.role = 1;
+	write_n(sk, (void *) &info, sizeof(info));
+
+	if (!(conn = malloc(sizeof(*conn)))) {
+		syslog(LOG_ERR, "Can't alloc new connection: %s (%d)",
+						strerror(errno), errno);
+		close(sk);
+		return;
+	}
+
+	memcpy((uint8_t *) &ba, (uint8_t *) &sa.sin_addr, 4);
+	memcpy((uint8_t *) &ba.b[4], (uint8_t *) &sa.sin_port, 2);
+	baswap(&conn->dest, &ba);
+
+	vconn[h] = conn;
+	conn->handle = h + 1;
+	conn->chan = g_io_channel_unix_new(sk);
+
+	connect_complete(conn);
+	g_io_add_watch(conn->chan, G_IO_IN | G_IO_NVAL | G_IO_HUP,
+				io_acl_data, (gpointer) conn);
+	return;
+}
+
+static void inline hci_link_control(uint16_t ocf, int plen, uint8_t *data)
+{
+	uint8_t status;
+
+	const uint16_t ogf = OGF_LINK_CTL;
+
+	switch (ocf) {
+	case OCF_CREATE_CONN:
+		command_status(ogf, ocf, 0x00);
+		create_connection(data);
+		break;
+
+	case OCF_ACCEPT_CONN_REQ:
+		command_status(ogf, ocf, 0x00);
+		accept_connection(data);
+		break;
+
+	case OCF_DISCONNECT:
+		command_status(ogf, ocf, 0x00);
+		disconnect(data);
+		break;
+
+	default:
+		status = 0x01;
+		command_complete(ogf, ocf, 1, &status);
+		break;
+	}
+}
+
+static void inline hci_link_policy(uint16_t ocf, int plen, uint8_t *data)
+{
+	uint8_t status;
+
+	const uint16_t ogf = OGF_INFO_PARAM;
+
+	switch (ocf) {
+	default:
+		status = 0x01;
+		command_complete(ogf, ocf, 1, &status);
+		break;
+	}
+}
+
+static void inline hci_host_control(uint16_t ocf, int plen, uint8_t *data)
+{
+	read_local_name_rp ln;
+	read_class_of_dev_rp cd;
+	read_inquiry_mode_rp im;
+	read_ext_inquiry_response_rp ir;
+	uint8_t status;
+
+	const uint16_t ogf = OGF_HOST_CTL;
+
+	switch (ocf) {
+	case OCF_RESET:
+		status = 0x00;
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	case OCF_SET_EVENT_FLT:
+		status = 0x00;
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	case OCF_CHANGE_LOCAL_NAME:
+		status = 0x00;
+		memcpy(vdev.name, data, sizeof(vdev.name));
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	case OCF_READ_LOCAL_NAME:
+		ln.status = 0x00;
+		memcpy(ln.name, vdev.name, sizeof(ln.name));
+		command_complete(ogf, ocf, sizeof(ln), &ln);
+		break;
+
+	case OCF_WRITE_CONN_ACCEPT_TIMEOUT:
+	case OCF_WRITE_PAGE_TIMEOUT:
+		status = 0x00;
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	case OCF_WRITE_SCAN_ENABLE:
+		status = scan_enable(data);
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	case OCF_WRITE_AUTH_ENABLE:
+		status = 0x00;
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	case OCF_WRITE_ENCRYPT_MODE:
+		status = 0x00;
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	case OCF_READ_CLASS_OF_DEV:
+		cd.status = 0x00;
+		memcpy(cd.dev_class, vdev.dev_class, 3);
+		command_complete(ogf, ocf, sizeof(cd), &cd);
+		break;
+
+	case OCF_WRITE_CLASS_OF_DEV:
+		status = 0x00;
+		memcpy(vdev.dev_class, data, 3);
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	case OCF_READ_INQUIRY_MODE:
+		im.status = 0x00;
+		im.mode = vdev.inq_mode;
+		command_complete(ogf, ocf, sizeof(im), &im);
+		break;
+
+	case OCF_WRITE_INQUIRY_MODE:
+		status = 0x00;
+		vdev.inq_mode = data[0];
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	case OCF_READ_EXT_INQUIRY_RESPONSE:
+		ir.status = 0x00;
+		ir.fec = vdev.eir_fec;
+		memcpy(ir.data, vdev.eir_data, 240);
+		command_complete(ogf, ocf, sizeof(ir), &ir);
+		break;
+
+	case OCF_WRITE_EXT_INQUIRY_RESPONSE:
+		status = 0x00;
+		vdev.eir_fec = data[0];
+		memcpy(vdev.eir_data, data + 1, 240);
+		command_complete(ogf, ocf, 1, &status);
+		break;
+
+	default:
+		status = 0x01;
+		command_complete(ogf, ocf, 1, &status);
+		break;
+	}
+}
+
+static void inline hci_info_param(uint16_t ocf, int plen, uint8_t *data)
+{
+	read_local_version_rp lv;
+	read_local_features_rp lf;
+	read_local_ext_features_rp ef;
+	read_buffer_size_rp bs;
+	read_bd_addr_rp ba;
+	uint8_t status;
+
+	const uint16_t ogf = OGF_INFO_PARAM;
+
+	switch (ocf) {
+	case OCF_READ_LOCAL_VERSION:
+		lv.status = 0x00;
+		lv.hci_ver = 0x03;
+		lv.hci_rev = htobs(0x0000);
+		lv.lmp_ver = 0x03;
+		lv.manufacturer = htobs(29);
+		lv.lmp_subver = htobs(0x0000);
+		command_complete(ogf, ocf, sizeof(lv), &lv);
+		break;
+
+	case OCF_READ_LOCAL_FEATURES:
+		lf.status = 0x00;
+		memcpy(lf.features, vdev.features, 8);
+		command_complete(ogf, ocf, sizeof(lf), &lf);
+		break;
+
+	case OCF_READ_LOCAL_EXT_FEATURES:
+		ef.status = 0x00;
+		if (*data == 0) {
+			ef.page_num = 0;
+			ef.max_page_num = 0;
+			memcpy(ef.features, vdev.features, 8);
+		} else {
+			ef.page_num = *data;
+			ef.max_page_num = 0;
+			memset(ef.features, 0, 8);
+		}
+		command_complete(ogf, ocf, sizeof(ef), &ef);
+		break;
+
+	case OCF_READ_BUFFER_SIZE:
+		bs.status = 0x00;
+		bs.acl_mtu = htobs(VHCI_ACL_MTU);
+		bs.sco_mtu = 0;
+		bs.acl_max_pkt = htobs(VHCI_ACL_MAX_PKT);
+		bs.sco_max_pkt = htobs(0);
+		command_complete(ogf, ocf, sizeof(bs), &bs);
+		break;
+
+	case OCF_READ_BD_ADDR:
+		ba.status = 0x00;
+		bacpy(&ba.bdaddr, &vdev.bdaddr);
+		command_complete(ogf, ocf, sizeof(ba), &ba);
+		break;
+
+	default:
+		status = 0x01;
+		command_complete(ogf, ocf, 1, &status);
+		break;
+	}
+}
+
+static void hci_command(uint8_t *data)
+{
+	hci_command_hdr *ch;
+	uint8_t *ptr = data;
+	uint16_t ogf, ocf;
+
+	ch = (hci_command_hdr *) ptr;
+	ptr += HCI_COMMAND_HDR_SIZE;
+
+	ch->opcode = btohs(ch->opcode);
+	ogf = cmd_opcode_ogf(ch->opcode);
+	ocf = cmd_opcode_ocf(ch->opcode);
+
+	switch (ogf) {
+	case OGF_LINK_CTL:
+		hci_link_control(ocf, ch->plen, ptr);
+		break;
+
+	case OGF_LINK_POLICY:
+		hci_link_policy(ocf, ch->plen, ptr);
+		break;
+
+	case OGF_HOST_CTL:
+		hci_host_control(ocf, ch->plen, ptr);
+		break;
+
+	case OGF_INFO_PARAM:
+		hci_info_param(ocf, ch->plen, ptr);
+		break;
+	}
+}
+
+static void hci_acl_data(uint8_t *data)
+{
+	hci_acl_hdr *ah = (void *) data;
+	struct vhci_conn *conn;
+	uint16_t handle;
+	int fd;
+
+	handle = acl_handle(btohs(ah->handle));
+
+	if (handle > VHCI_MAX_CONN || !(conn = vconn[handle - 1])) {
+		syslog(LOG_ERR, "Bad connection handle %d", handle);
+		return;
+	}
+
+	fd = g_io_channel_unix_get_fd(conn->chan);
+	if (write_n(fd, data, btohs(ah->dlen) + HCI_ACL_HDR_SIZE) < 0) {
+		close_connection(conn);
+		return;
+	}
+
+	if (++vdev.acl_cnt > VHCI_ACL_MAX_PKT - 1) {
+		/* Send num of complete packets event */
+		num_completed_pkts(conn);
+		vdev.acl_cnt = 0;
+	}
+}
+
+static gboolean io_acl_data(GIOChannel *chan, GIOCondition cond, gpointer data)
+{
+	struct vhci_conn *conn = (struct vhci_conn *) data;
+	unsigned char buf[HCI_MAX_FRAME_SIZE], *ptr;
+	hci_acl_hdr *ah;
+	uint16_t flags;
+	int len, fd;
+
+	if (cond & G_IO_NVAL)
+		return FALSE;
+
+	if (cond & G_IO_HUP) {
+		close_connection(conn);
+		return FALSE;
+	}
+
+	fd = g_io_channel_unix_get_fd(chan);
+
+	ptr = buf + 1;
+	if (read_n(fd, ptr, HCI_ACL_HDR_SIZE) <= 0) {
+		close_connection(conn);
+		return FALSE;
+	}
+
+	ah = (void *) ptr;
+	ptr += HCI_ACL_HDR_SIZE;
+
+	len = btohs(ah->dlen);
+	if (read_n(fd, ptr, len) <= 0) {
+		close_connection(conn);
+		return FALSE;
+	}
+
+	buf[0] = HCI_ACLDATA_PKT;
+
+	flags = acl_flags(btohs(ah->handle));
+	ah->handle = htobs(acl_handle_pack(conn->handle, flags));
+	len += HCI_ACL_HDR_SIZE + 1;
+
+	write_snoop(vdev.dd, HCI_ACLDATA_PKT, 1, buf, len);
+
+	write(vdev.fd, buf, len);
+
+	return TRUE;
+}
+
+static gboolean io_conn_ind(GIOChannel *chan, GIOCondition cond, gpointer data)
+{
+	struct vhci_link_info info;
+	struct vhci_conn *conn;
+	struct sockaddr_in sa;
+	socklen_t len;
+	int sk, nsk, h;
+
+	if (cond & G_IO_NVAL)
+		return FALSE;
+
+	sk = g_io_channel_unix_get_fd(chan);
+
+	len = sizeof(sa);
+	if ((nsk = accept(sk, (struct sockaddr *) &sa, &len)) < 0)
+		return TRUE;
+
+	if (read_n(nsk, &info, sizeof(info)) < 0) {
+		syslog(LOG_ERR, "Can't read link info");
+		return TRUE;
+	}
+
+	if (!(conn = malloc(sizeof(*conn)))) {
+		syslog(LOG_ERR, "Can't alloc new connection");
+		close(nsk);
+		return TRUE;
+	}
+
+	bacpy(&conn->dest, &info.bdaddr);
+
+	for (h = 0; h < VHCI_MAX_CONN; h++)
+		if (!vconn[h])
+			goto accepted;
+
+	syslog(LOG_ERR, "Too many connections");
+	free(conn);
+	close(nsk);
+	return TRUE;
+
+accepted:
+	vconn[h] = conn;
+	conn->handle = h + 1;
+	conn->chan = g_io_channel_unix_new(nsk);
+	connect_request(conn);
+
+	return TRUE;
+}
+
+static gboolean io_hci_data(GIOChannel *chan, GIOCondition cond, gpointer data)
+{
+	unsigned char buf[HCI_MAX_FRAME_SIZE], *ptr;
+	int type;
+	gsize len;
+	GIOError err;
+
+	ptr = buf;
+
+	if ((err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf), &len))) {
+		if (err == G_IO_ERROR_AGAIN)
+			return TRUE;
+
+		syslog(LOG_ERR, "Read failed: %s (%d)", strerror(errno), errno);
+		g_main_quit(event_loop);
+		return FALSE;
+	}
+
+	type = *ptr++;
+
+	write_snoop(vdev.dd, type, 0, buf, len);
+
+	switch (type) {
+	case HCI_COMMAND_PKT:
+		hci_command(ptr);
+		break;
+
+	case HCI_ACLDATA_PKT:
+		hci_acl_data(ptr);
+		break;
+
+	default:
+		syslog(LOG_ERR, "Unknown packet type 0x%2.2x", type);
+		break;
+	}
+
+	return TRUE;
+}
+
+static int getbdaddrbyname(char *str, bdaddr_t *ba)
+{
+	int i, n, len;
+
+	len = strlen(str);
+
+	/* Check address format */
+	for (i = 0, n = 0; i < len; i++)
+		if (str[i] == ':')
+			n++;
+
+	if (n == 5) {
+		/* BD address */
+		baswap(ba, strtoba(str));
+		return 0;
+	}
+
+	if (n == 1) {
+		/* IP address + port */
+		struct hostent *hent;
+		bdaddr_t b;
+		char *ptr;
+
+		ptr = strchr(str, ':');
+		*ptr++ = 0;
+
+		if (!(hent = gethostbyname(str))) {
+			fprintf(stderr, "Can't resolve %s\n", str);
+			return -2;
+		}
+
+		memcpy(&b, hent->h_addr, 4);
+		*(uint16_t *) (&b.b[4]) = htons(atoi(ptr));
+		baswap(ba, &b);
+
+		return 0;
+	}
+
+	fprintf(stderr, "Invalid address format\n");
+
+	return -1;
+}
+
+static void rewrite_bdaddr(unsigned char *buf, int len, bdaddr_t *bdaddr)
+{
+	hci_event_hdr *eh;
+	unsigned char *ptr = buf;
+	int type;
+
+	if (!bdaddr)
+		return;
+
+	if (!bacmp(bdaddr, BDADDR_ANY))
+		return;
+
+	type = *ptr++;
+
+	switch (type) {
+	case HCI_EVENT_PKT:
+		eh = (hci_event_hdr *) ptr;
+		ptr += HCI_EVENT_HDR_SIZE;
+
+		if (eh->evt == EVT_CMD_COMPLETE) {
+			evt_cmd_complete *cc = (void *) ptr;
+
+			ptr += EVT_CMD_COMPLETE_SIZE;
+
+			if (cc->opcode == htobs(cmd_opcode_pack(OGF_INFO_PARAM,
+						OCF_READ_BD_ADDR))) {
+				bacpy((bdaddr_t *) (ptr + 1), bdaddr);
+			}
+		}
+		break;
+	}
+}
+
+static int run_proxy(int fd, int dev, bdaddr_t *bdaddr)
+{
+	unsigned char buf[HCI_MAX_FRAME_SIZE + 1];
+	struct hci_dev_info di;
+	struct hci_filter flt;
+	struct pollfd p[2];
+	int dd, err, len, need_raw;
+
+	dd = hci_open_dev(dev);
+	if (dd < 0) {
+		syslog(LOG_ERR, "Can't open device hci%d: %s (%d)",
+						dev, strerror(errno), errno);
+		return 1;
+	}
+
+	if (hci_devinfo(dev, &di) < 0) {
+		syslog(LOG_ERR, "Can't get device info for hci%d: %s (%d)",
+						dev, strerror(errno), errno);
+		hci_close_dev(dd);
+		return 1;
+	}
+
+	need_raw = !hci_test_bit(HCI_RAW, &di.flags);
+
+	hci_filter_clear(&flt);
+	hci_filter_all_ptypes(&flt);
+	hci_filter_all_events(&flt);
+
+	if (setsockopt(dd, SOL_HCI, HCI_FILTER, &flt, sizeof(flt)) < 0) {
+		syslog(LOG_ERR, "Can't set filter for hci%d: %s (%d)",
+						dev, strerror(errno), errno);
+		hci_close_dev(dd);
+		return 1;
+	}
+
+	if (need_raw) {
+		if (ioctl(dd, HCISETRAW, 1) < 0) {
+			syslog(LOG_ERR, "Can't set raw mode on hci%d: %s (%d)",
+						dev, strerror(errno), errno);
+			hci_close_dev(dd);
+			return 1;
+		}
+	}
+
+	p[0].fd = fd;
+	p[0].events = POLLIN;
+	p[1].fd = dd;
+	p[1].events = POLLIN;
+
+	while (!__io_canceled) {
+		p[0].revents = 0;
+		p[1].revents = 0;
+		err = poll(p, 2, 100);
+		if (err < 0)
+			break;
+		if (!err)
+			continue;
+
+		if (p[0].revents & POLLIN) {
+			len = read(fd, buf, sizeof(buf));
+			if (len > 0) {
+				rewrite_bdaddr(buf, len, bdaddr);
+				write(dd, buf, len);
+			}
+		}
+
+		if (p[1].revents & POLLIN) {
+			len = read(dd, buf, sizeof(buf));
+			if (len > 0) {
+				rewrite_bdaddr(buf, len, bdaddr);
+				write(fd, buf, len);
+			}
+		}
+	}
+
+	if (need_raw) {
+		if (ioctl(dd, HCISETRAW, 0) < 0)
+			syslog(LOG_ERR, "Can't clear raw mode on hci%d: %s (%d)",
+						dev, strerror(errno), errno);
+	}
+
+	hci_close_dev(dd);
+
+	syslog(LOG_INFO, "Exit");
+
+	return 0;
+}
+
+static void usage(void)
+{
+	printf("hciemu - HCI emulator ver %s\n", VERSION);
+	printf("Usage: \n");
+	printf("\thciemu [-n] local_address\n");
+}
+
+static struct option main_options[] = {
+	{ "device",	1, 0, 'd' },
+	{ "bdaddr",	1, 0, 'b' },
+	{ "snoop",	1, 0, 's' },
+	{ "nodetach",	0, 0, 'n' },
+	{ "help",	0, 0, 'h' },
+	{ 0 }
+};
+
+int main(int argc, char *argv[], char *env[])
+{
+	struct sigaction sa;
+	GIOChannel *dev_io;
+	char *device = NULL, *snoop = NULL;
+	bdaddr_t bdaddr;
+	int fd, dd, opt, daemon, dofork, dev = -1;
+
+	bacpy(&bdaddr, BDADDR_ANY);
+
+	/* Configure default settings */
+	daemon = 1; dofork = 1;
+
+	while ((opt=getopt_long(argc, argv, "d:b:s:nh", main_options, NULL)) != EOF) {
+		switch(opt) {
+		case 'd':
+			device = strdup(optarg);
+			break;
+
+		case 'b':
+			str2ba(optarg, &bdaddr);
+			break;
+
+		case 's':
+			snoop = strdup(optarg);
+			break;
+
+		case 'n':
+			daemon = 0;
+			break;
+
+		case 'h':
+		default:
+			usage();
+			exit(0);
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+	optind = 0;
+
+	if (argc < 1) {
+		usage();
+		exit(1);
+	}
+
+	if (strlen(argv[0]) > 3 && !strncasecmp(argv[0], "hci", 3)) {
+		dev = hci_devid(argv[0]);
+		if (dev < 0) {
+			perror("Invalid device");
+			exit(1);
+		}
+	} else {
+		if (getbdaddrbyname(argv[0], &vdev.bdaddr) < 0)
+			exit(1);
+	}
+
+	if (daemon) {
+		if (dofork && fork())
+			exit(0);
+
+		/* Direct stdin,stdout,stderr to '/dev/null' */
+		fd = open("/dev/null", O_RDWR);
+		dup2(fd, 0); dup2(fd, 1); dup2(fd, 2);
+		close(fd);
+
+		setsid();
+
+		chdir("/");
+	}
+
+	/* Start logging to syslog and stderr */
+	openlog("hciemu", LOG_PID | LOG_NDELAY | LOG_PERROR, LOG_DAEMON);
+	syslog(LOG_INFO, "HCI emulation daemon ver %s started", VERSION);
+
+	memset(&sa, 0, sizeof(sa));
+	sa.sa_flags   = SA_NOCLDSTOP;
+	sa.sa_handler = SIG_IGN;
+	sigaction(SIGCHLD, &sa, NULL);
+	sigaction(SIGPIPE, &sa, NULL);
+
+	sa.sa_handler = sig_term;
+	sigaction(SIGTERM, &sa, NULL);
+	sigaction(SIGINT,  &sa, NULL);
+
+	io_init();
+
+	if (!device && dev >= 0)
+		device = strdup(GHCI_DEV);
+
+	/* Open and create virtual HCI device */
+	if (device) {
+		fd = open(device, O_RDWR);
+		if (fd < 0) {
+			syslog(LOG_ERR, "Can't open device %s: %s (%d)",
+						device, strerror(errno), errno);
+			free(device);
+			exit(1);
+		}
+		free(device);
+	} else {
+		fd = open(VHCI_DEV, O_RDWR);
+		if (fd < 0) {
+			fd = open(VHCI_UDEV, O_RDWR);
+			if (fd < 0) {
+				syslog(LOG_ERR, "Can't open device %s: %s (%d)",
+						VHCI_DEV, strerror(errno), errno);
+				exit(1);
+			}
+		}
+	}
+
+	/* Create snoop file */
+	if (snoop) {
+		dd = create_snoop(snoop);
+		if (dd < 0)
+			syslog(LOG_ERR, "Can't create snoop file %s: %s (%d)",
+						snoop, strerror(errno), errno);
+		free(snoop);
+	} else
+		dd = -1;
+
+	/* Create event loop */
+	event_loop = g_main_new(FALSE);
+
+	if (dev >= 0)
+		return run_proxy(fd, dev, &bdaddr);
+
+	/* Device settings */
+	vdev.features[0] = 0xff;
+	vdev.features[1] = 0xff;
+	vdev.features[2] = 0x8f;
+	vdev.features[3] = 0xfe;
+	vdev.features[4] = 0x9b;
+	vdev.features[5] = 0xf9;
+	vdev.features[6] = 0x01;
+	vdev.features[7] = 0x80;
+
+	memset(vdev.name, 0, sizeof(vdev.name));
+	strncpy((char *) vdev.name, "BlueZ (Virtual HCI)", sizeof(vdev.name));
+
+	vdev.dev_class[0] = 0x00;
+	vdev.dev_class[1] = 0x00;
+	vdev.dev_class[2] = 0x00;
+
+	vdev.inq_mode = 0x00;
+	vdev.eir_fec = 0x00;
+	memset(vdev.eir_data, 0, sizeof(vdev.eir_data));
+
+	vdev.fd = fd;
+	vdev.dd = dd;
+
+	dev_io = g_io_channel_unix_new(fd);
+	g_io_add_watch(dev_io, G_IO_IN, io_hci_data, NULL);
+
+	setpriority(PRIO_PROCESS, 0, -19);
+
+	/* Start event processor */
+	g_main_run(event_loop);
+
+	close(fd);
+
+	if (dd >= 0)
+		close(dd);
+
+	syslog(LOG_INFO, "Exit");
+
+	return 0;
+}