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device.c
1648 lines (1306 loc) · 37.2 KB
/
device.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
* Copyright (C) 2014 Google Inc.
*
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define _GNU_SOURCE
#include <stdlib.h>
#include <stdbool.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/uio.h>
#include "lib/bluetooth.h"
#include "lib/hidp.h"
#include "lib/sdp.h"
#include "lib/sdp_lib.h"
#include "lib/uuid.h"
#include "gdbus/gdbus.h"
#include "btio/btio.h"
#include "src/log.h"
#include "src/adapter.h"
#include "src/device.h"
#include "src/profile.h"
#include "src/service.h"
#include "src/storage.h"
#include "src/dbus-common.h"
#include "src/error.h"
#include "src/sdp-client.h"
#include "src/shared/timeout.h"
#include "src/shared/uhid.h"
#include "src/shared/util.h"
#include "src/shared/queue.h"
#include "device.h"
#include "hidp_defs.h"
#define INPUT_INTERFACE "org.bluez.Input1"
enum reconnect_mode_t {
RECONNECT_NONE = 0,
RECONNECT_DEVICE,
RECONNECT_HOST,
RECONNECT_ANY
};
struct hidp_msg {
uint8_t hdr;
struct iovec *iov;
};
struct input_device {
struct btd_service *service;
struct btd_device *device;
char *path;
bdaddr_t src;
bdaddr_t dst;
const sdp_record_t *rec;
GIOChannel *ctrl_io;
GIOChannel *intr_io;
guint ctrl_watch;
guint intr_watch;
guint sec_watch;
struct hidp_connadd_req *req;
bool disable_sdp;
enum reconnect_mode_t reconnect_mode;
unsigned int reconnect_timer;
uint32_t reconnect_attempt;
struct bt_uhid *uhid;
uint8_t report_req_pending;
unsigned int report_req_timer;
uint32_t report_rsp_id;
bool virtual_cable_unplug;
uint8_t type;
unsigned int idle_timer;
};
static int idle_timeout = 0;
static bool uhid_enabled = true;
static bool classic_bonded_only = true;
void input_set_idle_timeout(int timeout)
{
idle_timeout = timeout;
}
void input_enable_userspace_hid(bool state)
{
uhid_enabled = state;
}
void input_set_classic_bonded_only(bool state)
{
classic_bonded_only = state;
}
bool input_get_classic_bonded_only(void)
{
return classic_bonded_only;
}
static void input_device_enter_reconnect_mode(struct input_device *idev);
static int connection_disconnect(struct input_device *idev, uint32_t flags);
static bool input_device_bonded(struct input_device *idev)
{
return device_is_bonded(idev->device,
btd_device_get_bdaddr_type(idev->device));
}
static void input_device_free(struct input_device *idev)
{
bt_uhid_unref(idev->uhid);
btd_service_unref(idev->service);
btd_device_unref(idev->device);
g_free(idev->path);
if (idev->ctrl_watch > 0)
g_source_remove(idev->ctrl_watch);
if (idev->intr_watch > 0)
g_source_remove(idev->intr_watch);
if (idev->sec_watch > 0)
g_source_remove(idev->sec_watch);
if (idev->intr_io)
g_io_channel_unref(idev->intr_io);
if (idev->ctrl_io)
g_io_channel_unref(idev->ctrl_io);
if (idev->req) {
g_free(idev->req->rd_data);
g_free(idev->req);
}
if (idev->idle_timer)
timeout_remove(idev->idle_timer);
if (idev->reconnect_timer > 0)
timeout_remove(idev->reconnect_timer);
if (idev->report_req_timer > 0)
timeout_remove(idev->report_req_timer);
g_free(idev);
}
static void virtual_cable_unplug(struct input_device *idev)
{
device_remove_bonding(idev->device,
btd_device_get_bdaddr_type(idev->device));
idev->virtual_cable_unplug = false;
}
static int uhid_disconnect(struct input_device *idev, bool force)
{
int err;
if (!bt_uhid_created(idev->uhid))
return 0;
/* Force destroy the node if virtual cable unplug flag has been set */
if (idev->virtual_cable_unplug && !force)
force = true;
err = bt_uhid_destroy(idev->uhid, force);
if (err < 0) {
error("bt_uhid_destroy: %s", strerror(-err));
return err;
}
if (!bt_uhid_created(idev->uhid))
bt_uhid_unregister_all(idev->uhid);
return err;
}
static bool input_device_idle_timeout(gpointer user_data)
{
struct input_device *idev = user_data;
idev->idle_timer = 0;
DBG("path=%s", idev->path);
uhid_disconnect(idev, true);
connection_disconnect(idev, 0);
return false;
}
static void input_device_idle_reset(struct input_device *idev)
{
timeout_remove(idev->idle_timer);
if (idle_timeout)
idev->idle_timer = timeout_add_seconds(idle_timeout,
input_device_idle_timeout, idev,
NULL);
}
static bool hidp_send_message(struct input_device *idev, GIOChannel *chan,
uint8_t hdr, const uint8_t *data, size_t size)
{
int fd;
ssize_t len;
struct iovec iov[2];
if (!chan) {
error("BT socket not connected");
return false;
}
iov[0].iov_base = &hdr;
iov[0].iov_len = sizeof(hdr);
if (data == NULL)
size = 0;
iov[1].iov_base = (void *)data;
iov[1].iov_len = size;
fd = g_io_channel_unix_get_fd(chan);
len = writev(fd, iov, 2);
if (len < 0) {
error("BT socket write error: %s (%d)", strerror(errno), errno);
return false;
}
if ((size_t) len < size + 1) {
error("BT socket write error: partial write (%zd of %zu bytes)",
len, size + 1);
return false;
}
input_device_idle_reset(idev);
return true;
}
static bool hidp_send_ctrl_message(struct input_device *idev, uint8_t hdr,
const uint8_t *data, size_t size)
{
if (hdr == (HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG))
idev->virtual_cable_unplug = true;
return hidp_send_message(idev, idev->ctrl_io, hdr, data, size);
}
static bool hidp_send_intr_message(struct input_device *idev, uint8_t hdr,
const uint8_t *data, size_t size)
{
return hidp_send_message(idev, idev->intr_io, hdr, data, size);
}
static bool uhid_send_get_report_reply(struct input_device *idev,
const uint8_t *data, size_t size,
uint32_t id, uint16_t err)
{
int ret;
if (data == NULL)
size = 0;
if (!bt_uhid_created(idev->uhid)) {
DBG("HID report (%zu bytes) dropped", size);
return false;
}
ret = bt_uhid_get_report_reply(idev->uhid, id, 0, err, data, size);
if (ret < 0) {
error("bt_uhid_get_report_reply: %s (%d)", strerror(-ret),
-ret);
return false;
}
DBG("HID report (%zu bytes)", size);
return true;
}
static bool uhid_send_set_report_reply(struct input_device *idev,
uint32_t id, uint16_t err)
{
int ret;
if (!bt_uhid_created(idev->uhid))
return false;
ret = bt_uhid_set_report_reply(idev->uhid, id, err);
if (ret < 0) {
error("bt_uhid_set_report_reply: %s (%d)", strerror(-ret),
-ret);
return false;
}
return true;
}
static bool uhid_send_input_report(struct input_device *idev,
const uint8_t *data, size_t size)
{
int err;
if (data == NULL)
size = 0;
if (!bt_uhid_created(idev->uhid)) {
DBG("HID report (%zu bytes) dropped", size);
return false;
}
err = bt_uhid_input(idev->uhid, 0, data, size);
if (err < 0) {
error("bt_uhid_input: %s (%d)", strerror(-err), -err);
return false;
}
DBG("HID report (%zu bytes)", size);
return true;
}
static bool hidp_recv_intr_data(GIOChannel *chan, struct input_device *idev)
{
int fd;
ssize_t len;
uint8_t hdr;
uint8_t data[UHID_DATA_MAX + 1];
fd = g_io_channel_unix_get_fd(chan);
len = read(fd, data, sizeof(data));
if (len < 0) {
error("BT socket read error: %s (%d)", strerror(errno), errno);
return false;
}
if (len == 0) {
DBG("BT socket read returned 0 bytes");
return true;
}
input_device_idle_reset(idev);
hdr = data[0];
if (hdr != (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) {
DBG("unsupported HIDP protocol header 0x%02x", hdr);
return true;
}
if (len < 2) {
DBG("received empty HID report");
return true;
}
uhid_send_input_report(idev, data + 1, len - 1);
return true;
}
static gboolean intr_watch_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
{
struct input_device *idev = data;
char address[18];
if (cond & G_IO_IN) {
if (hidp_recv_intr_data(chan, idev) && (cond == G_IO_IN))
return TRUE;
}
ba2str(&idev->dst, address);
DBG("Device %s disconnected", address);
/* Checking for ctrl_watch avoids a double g_io_channel_shutdown since
* it's likely that ctrl_watch_cb has been queued for dispatching in
* this mainloop iteration */
if ((cond & (G_IO_HUP | G_IO_ERR)) && idev->ctrl_watch)
g_io_channel_shutdown(chan, TRUE, NULL);
idev->intr_watch = 0;
if (idev->intr_io) {
g_io_channel_unref(idev->intr_io);
idev->intr_io = NULL;
}
/* Close control channel if the closing of interrupt channel is not
* initiated by the other party
*/
if (idev->ctrl_io && !(cond & (G_IO_NVAL | G_IO_ERR)))
g_io_channel_shutdown(idev->ctrl_io, TRUE, NULL);
btd_service_disconnecting_complete(idev->service, 0);
/* Enter the auto-reconnect mode if needed */
input_device_enter_reconnect_mode(idev);
if (!idev->ctrl_io && idev->virtual_cable_unplug)
virtual_cable_unplug(idev);
/* If connection abruptly ended, uhid might be not yet disconnected */
uhid_disconnect(idev, false);
return FALSE;
}
static void hidp_recv_ctrl_handshake(struct input_device *idev, uint8_t param)
{
bool pending_req_complete = false;
uint8_t pending_req_type;
DBG("");
pending_req_type = idev->report_req_pending & HIDP_HEADER_TRANS_MASK;
switch (param) {
case HIDP_HSHK_SUCCESSFUL:
if (pending_req_type == HIDP_TRANS_SET_REPORT) {
DBG("SET_REPORT successful");
pending_req_complete = true;
} else
DBG("Spurious HIDP_HSHK_SUCCESSFUL");
break;
case HIDP_HSHK_NOT_READY:
case HIDP_HSHK_ERR_INVALID_REPORT_ID:
case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST:
case HIDP_HSHK_ERR_INVALID_PARAMETER:
case HIDP_HSHK_ERR_UNKNOWN:
case HIDP_HSHK_ERR_FATAL:
if (pending_req_type == HIDP_TRANS_GET_REPORT) {
DBG("GET_REPORT failed (%u)", param);
uhid_send_get_report_reply(idev, NULL, 0,
idev->report_rsp_id, EIO);
pending_req_complete = true;
} else if (pending_req_type == HIDP_TRANS_SET_REPORT) {
DBG("SET_REPORT failed (%u)", param);
uhid_send_set_report_reply(idev, idev->report_rsp_id,
EIO);
pending_req_complete = true;
} else
DBG("Spurious HIDP_HSHK_ERR");
if (param == HIDP_HSHK_ERR_FATAL)
hidp_send_ctrl_message(idev, HIDP_TRANS_HID_CONTROL |
HIDP_CTRL_SOFT_RESET, NULL, 0);
break;
default:
hidp_send_ctrl_message(idev, HIDP_TRANS_HANDSHAKE |
HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
break;
}
if (pending_req_complete) {
idev->report_req_pending = 0;
if (idev->report_req_timer > 0) {
timeout_remove(idev->report_req_timer);
idev->report_req_timer = 0;
}
uhid_send_set_report_reply(idev, idev->report_rsp_id, 0);
idev->report_rsp_id = 0;
}
}
static void hidp_recv_ctrl_hid_control(struct input_device *idev, uint8_t param)
{
DBG("");
if (param == HIDP_CTRL_VIRTUAL_CABLE_UNPLUG)
connection_disconnect(idev, (1 << HIDP_VIRTUAL_CABLE_UNPLUG));
}
static void hidp_recv_ctrl_data(struct input_device *idev, uint8_t param,
const uint8_t *data, size_t size)
{
uint8_t pending_req_type;
uint8_t pending_req_param;
DBG("");
pending_req_type = idev->report_req_pending & HIDP_HEADER_TRANS_MASK;
if (pending_req_type != HIDP_TRANS_GET_REPORT &&
pending_req_type != HIDP_TRANS_SET_REPORT) {
DBG("Spurious DATA on control channel");
return;
}
pending_req_param = idev->report_req_pending & HIDP_HEADER_PARAM_MASK;
if (pending_req_param != param) {
DBG("Received DATA RTYPE doesn't match pending request RTYPE");
return;
}
switch (param) {
case HIDP_DATA_RTYPE_FEATURE:
case HIDP_DATA_RTYPE_INPUT:
case HIDP_DATA_RTYPE_OUTPUT:
if (pending_req_type == HIDP_TRANS_GET_REPORT)
uhid_send_get_report_reply(idev, data + 1, size - 1,
idev->report_rsp_id, 0);
else
uhid_send_set_report_reply(idev, idev->report_rsp_id,
0);
break;
case HIDP_DATA_RTYPE_OTHER:
DBG("Received DATA_RTYPE_OTHER");
break;
default:
hidp_send_ctrl_message(idev, HIDP_TRANS_HANDSHAKE |
HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
break;
}
idev->report_req_pending = 0;
if (idev->report_req_timer > 0) {
timeout_remove(idev->report_req_timer);
idev->report_req_timer = 0;
}
idev->report_rsp_id = 0;
}
static bool hidp_recv_ctrl_message(GIOChannel *chan, struct input_device *idev)
{
int fd;
ssize_t len;
uint8_t hdr, type, param;
uint8_t data[UHID_DATA_MAX + 1];
fd = g_io_channel_unix_get_fd(chan);
len = read(fd, data, sizeof(data));
if (len < 0) {
error("BT socket read error: %s (%d)", strerror(errno), errno);
return false;
}
if (len == 0) {
DBG("BT socket read returned 0 bytes");
return true;
}
input_device_idle_reset(idev);
hdr = data[0];
type = hdr & HIDP_HEADER_TRANS_MASK;
param = hdr & HIDP_HEADER_PARAM_MASK;
switch (type) {
case HIDP_TRANS_HANDSHAKE:
hidp_recv_ctrl_handshake(idev, param);
break;
case HIDP_TRANS_HID_CONTROL:
hidp_recv_ctrl_hid_control(idev, param);
break;
case HIDP_TRANS_DATA:
hidp_recv_ctrl_data(idev, param, data, len);
break;
default:
error("unsupported HIDP control message");
hidp_send_ctrl_message(idev, HIDP_TRANS_HANDSHAKE |
HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0);
break;
}
return true;
}
static gboolean ctrl_watch_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
{
struct input_device *idev = data;
char address[18];
if (cond & G_IO_IN) {
if (hidp_recv_ctrl_message(chan, idev) && (cond == G_IO_IN))
return TRUE;
}
ba2str(&idev->dst, address);
DBG("Device %s disconnected", address);
/* Checking for intr_watch avoids a double g_io_channel_shutdown since
* it's likely that intr_watch_cb has been queued for dispatching in
* this mainloop iteration */
if ((cond & (G_IO_HUP | G_IO_ERR)) && idev->intr_watch)
g_io_channel_shutdown(chan, TRUE, NULL);
idev->ctrl_watch = 0;
if (idev->ctrl_io) {
g_io_channel_unref(idev->ctrl_io);
idev->ctrl_io = NULL;
}
/* Close interrupt channel */
if (idev->intr_io && !(cond & G_IO_NVAL))
g_io_channel_shutdown(idev->intr_io, TRUE, NULL);
/* It's possible this is triggered while the intr channel is not even
* connected yet, therefore we are still in the connecting state.
*/
if (btd_service_get_state(idev->service) ==
BTD_SERVICE_STATE_CONNECTING)
btd_service_connecting_complete(idev->service, -EIO);
if (!idev->intr_io && idev->virtual_cable_unplug)
virtual_cable_unplug(idev);
return FALSE;
}
#define REPORT_REQ_TIMEOUT 3
static bool hidp_report_req_timeout(gpointer data)
{
struct input_device *idev = data;
uint8_t pending_req_type;
const char *req_type_str;
char address[18];
ba2str(&idev->dst, address);
pending_req_type = idev->report_req_pending & HIDP_HEADER_TRANS_MASK;
switch (pending_req_type) {
case HIDP_TRANS_GET_REPORT:
req_type_str = "GET_REPORT";
uhid_send_get_report_reply(idev, NULL, 0, idev->report_rsp_id,
ETIMEDOUT);
break;
case HIDP_TRANS_SET_REPORT:
req_type_str = "SET_REPORT";
uhid_send_set_report_reply(idev, idev->report_rsp_id,
ETIMEDOUT);
break;
default:
/* Should never happen */
req_type_str = "OTHER_TRANS";
break;
}
error("Device %s HIDP %s request timed out", address, req_type_str);
idev->report_req_pending = 0;
idev->report_req_timer = 0;
idev->report_rsp_id = 0;
return FALSE;
}
static void hidp_send_output(struct uhid_event *ev, void *user_data)
{
struct input_device *idev = user_data;
uint8_t hdr = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUTPUT;
bool sent;
DBG("");
sent = hidp_send_intr_message(idev, hdr, ev->u.output.data,
ev->u.output.size);
if (!sent)
uhid_disconnect(idev, true);
}
static void hidp_send_set_report(struct uhid_event *ev, void *user_data)
{
struct input_device *idev = user_data;
uint8_t hdr;
bool sent;
DBG("");
switch (ev->u.set_report.rtype) {
case UHID_FEATURE_REPORT:
hdr = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE;
break;
case UHID_INPUT_REPORT:
hdr = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_INPUT;
break;
case UHID_OUTPUT_REPORT:
hdr = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_OUTPUT;
break;
default:
DBG("Unsupported HID report type %u", ev->u.set_report.rtype);
return;
}
if (idev->report_req_pending) {
DBG("Old GET_REPORT or SET_REPORT still pending");
uhid_send_set_report_reply(idev, ev->u.set_report.id, EBUSY);
return;
}
sent = hidp_send_ctrl_message(idev, hdr, ev->u.set_report.data,
ev->u.set_report.size);
if (sent) {
idev->report_req_pending = hdr;
idev->report_req_timer =
timeout_add_seconds(REPORT_REQ_TIMEOUT,
hidp_report_req_timeout, idev, NULL);
idev->report_rsp_id = ev->u.set_report.id;
} else {
uhid_send_set_report_reply(idev, ev->u.set_report.id, EIO);
/* Force UHID_DESTROY on error */
uhid_disconnect(idev, true);
}
}
static void hidp_send_get_report(struct uhid_event *ev, void *user_data)
{
struct input_device *idev = user_data;
uint8_t hdr;
bool sent;
DBG("");
if (idev->report_req_pending) {
DBG("Old GET_REPORT or SET_REPORT still pending");
uhid_send_get_report_reply(idev, NULL, 0, ev->u.get_report.id,
EBUSY);
return;
}
/* Send GET_REPORT on control channel */
switch (ev->u.get_report.rtype) {
case UHID_FEATURE_REPORT:
hdr = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_FEATURE;
break;
case UHID_INPUT_REPORT:
hdr = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_INPUT;
break;
case UHID_OUTPUT_REPORT:
hdr = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_OUTPUT;
break;
default:
DBG("Unsupported HID report type %u", ev->u.get_report.rtype);
return;
}
sent = hidp_send_ctrl_message(idev, hdr, &ev->u.get_report.rnum,
sizeof(ev->u.get_report.rnum));
if (sent) {
idev->report_req_pending = hdr;
idev->report_req_timer =
timeout_add_seconds(REPORT_REQ_TIMEOUT,
hidp_report_req_timeout, idev,
NULL);
idev->report_rsp_id = ev->u.get_report.id;
} else {
uhid_send_get_report_reply(idev, NULL, 0, ev->u.get_report.id,
EIO);
/* Force UHID_DESTROY on error */
uhid_disconnect(idev, true);
}
}
static void epox_endian_quirk(unsigned char *data, int size)
{
/* USAGE_PAGE (Keyboard) 05 07
* USAGE_MINIMUM (0) 19 00
* USAGE_MAXIMUM (65280) 2A 00 FF <= must be FF 00
* LOGICAL_MINIMUM (0) 15 00
* LOGICAL_MAXIMUM (65280) 26 00 FF <= must be FF 00
*/
unsigned char pattern[] = { 0x05, 0x07, 0x19, 0x00, 0x2a, 0x00, 0xff,
0x15, 0x00, 0x26, 0x00, 0xff };
unsigned int i;
if (!data)
return;
for (i = 0; i < size - sizeof(pattern); i++) {
if (!memcmp(data + i, pattern, sizeof(pattern))) {
data[i + 5] = 0xff;
data[i + 6] = 0x00;
data[i + 10] = 0xff;
data[i + 11] = 0x00;
}
}
}
static int create_hid_dev_name(const sdp_record_t *rec,
struct hidp_connadd_req *req)
{
char sdesc[sizeof(req->name) / 2];
if (sdp_get_service_desc(rec, sdesc, sizeof(sdesc)) == 0) {
char pname[sizeof(req->name) / 2];
if (sdp_get_provider_name(rec, pname, sizeof(pname)) == 0 &&
strncmp(sdesc, pname, 5) != 0)
snprintf(req->name, sizeof(req->name), "%s %s",
pname, sdesc);
else
snprintf(req->name, sizeof(req->name), "%s", sdesc);
} else {
return sdp_get_service_name(rec, req->name, sizeof(req->name));
}
return 0;
}
/* See HID profile specification v1.0, "7.11.6 HIDDescriptorList" for details
* on the attribute format. */
static int extract_hid_desc_data(const sdp_record_t *rec,
struct hidp_connadd_req *req)
{
sdp_data_t *d;
d = sdp_data_get(rec, SDP_ATTR_HID_DESCRIPTOR_LIST);
if (!d)
goto invalid_desc;
if (!SDP_IS_SEQ(d->dtd))
goto invalid_desc;
/* First HIDDescriptor */
d = d->val.dataseq;
if (!SDP_IS_SEQ(d->dtd))
goto invalid_desc;
/* ClassDescriptorType */
d = d->val.dataseq;
if (d->dtd != SDP_UINT8)
goto invalid_desc;
/* ClassDescriptorData */
d = d->next;
if (!d || !SDP_IS_TEXT_STR(d->dtd))
goto invalid_desc;
req->rd_data = g_try_malloc0(d->unitSize);
if (req->rd_data) {
memcpy(req->rd_data, d->val.str, d->unitSize);
req->rd_size = d->unitSize;
epox_endian_quirk(req->rd_data, req->rd_size);
}
return 0;
invalid_desc:
error("Missing or invalid HIDDescriptorList SDP attribute");
return -EINVAL;
}
static int extract_hid_record(struct input_device *idev,
struct hidp_connadd_req *req)
{
sdp_data_t *pdlist;
uint8_t attr_val;
int err;
if (!idev->rec)
return -ENOENT;
err = create_hid_dev_name(idev->rec, req);
if (err < 0)
DBG("No valid Service Name or Service Description found");
pdlist = sdp_data_get(idev->rec, SDP_ATTR_HID_PARSER_VERSION);
req->parser = pdlist ? pdlist->val.uint16 : 0x0100;
pdlist = sdp_data_get(idev->rec, SDP_ATTR_HID_DEVICE_SUBCLASS);
req->subclass = pdlist ? pdlist->val.uint8 : 0;
pdlist = sdp_data_get(idev->rec, SDP_ATTR_HID_COUNTRY_CODE);
req->country = pdlist ? pdlist->val.uint8 : 0;
pdlist = sdp_data_get(idev->rec, SDP_ATTR_HID_VIRTUAL_CABLE);
attr_val = pdlist ? pdlist->val.uint8 : 0;
if (attr_val)
req->flags |= (1 << HIDP_VIRTUAL_CABLE_UNPLUG);
pdlist = sdp_data_get(idev->rec, SDP_ATTR_HID_BOOT_DEVICE);
attr_val = pdlist ? pdlist->val.uint8 : 0;
if (attr_val)
req->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE);
err = extract_hid_desc_data(idev->rec, req);
if (err < 0)
return err;
return 0;
}
static int ioctl_connadd(struct hidp_connadd_req *req)
{
int ctl, err = 0;
ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HIDP);
if (ctl < 0)
return -errno;
if (ioctl(ctl, HIDPCONNADD, req) < 0)
err = -errno;
close(ctl);
return err;
}
static bool ioctl_is_connected(struct input_device *idev)
{
struct hidp_conninfo ci;
int ctl;
/* Standard HID */
ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HIDP);
if (ctl < 0) {
error("Can't open HIDP control socket");
return false;
}
memset(&ci, 0, sizeof(ci));
bacpy(&ci.bdaddr, &idev->dst);
if (ioctl(ctl, HIDPGETCONNINFO, &ci) < 0) {
error("Can't get HIDP connection info");
close(ctl);
return false;
}
close(ctl);
if (ci.state != BT_CONNECTED)
return false;
return true;
}
static int ioctl_disconnect(struct input_device *idev, uint32_t flags)
{
struct hidp_conndel_req req;
struct hidp_conninfo ci;
int ctl, err = 0;
ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HIDP);
if (ctl < 0) {
error("Can't open HIDP control socket");
return -errno;
}
memset(&ci, 0, sizeof(ci));
bacpy(&ci.bdaddr, &idev->dst);
if ((ioctl(ctl, HIDPGETCONNINFO, &ci) < 0) ||
(ci.state != BT_CONNECTED)) {
close(ctl);
return -ENOTCONN;
}
memset(&req, 0, sizeof(req));
bacpy(&req.bdaddr, &idev->dst);
req.flags = flags;
if (ioctl(ctl, HIDPCONNDEL, &req) < 0) {
err = -errno;
error("Can't delete the HID device: %s (%d)",
strerror(-err), -err);
}
close(ctl);
return err;
}
static int uhid_connadd(struct input_device *idev, struct hidp_connadd_req *req)
{
int err;
if (bt_uhid_created(idev->uhid))
return bt_uhid_replay(idev->uhid);
err = bt_uhid_create(idev->uhid, req->name, &idev->src, &idev->dst,
req->vendor, req->product, req->version,
req->country, idev->type,
req->rd_data, req->rd_size);
if (err < 0) {
error("bt_uhid_create: %s", strerror(-err));
return err;
}