static gboolean intr_io_watch_cb(GIOChannel *chan, gpointer data)
{
struct hid_device *dev = data;
uint8_t buf[UHID_DATA_MAX];
struct uhid_event ev;
int fd, bread, err;
/* Wait uHID if not ready */
if (!dev->uhid)
return TRUE;
fd = g_io_channel_unix_get_fd(chan);
bread = read(fd, buf, sizeof(buf));
if (bread < 0) {
error("hidhost: read from interrupt failed: %s(%d)",
strerror(errno), -errno);
return TRUE;
}
/* Discard non-data packets */
if (bread == 0 || buf[0] != (HID_MSG_DATA | HID_DATA_TYPE_INPUT))
return TRUE;
/* send data to uHID device skipping HIDP header byte */
memset(&ev, 0, sizeof(ev));
ev.type = UHID_INPUT;
ev.u.input.size = bread - 1;
memcpy(ev.u.input.data, &buf[1], ev.u.input.size);
err = bt_uhid_send(dev->uhid, &ev);
if (err < 0)
DBG("bt_uhid_send: %s (%d)", strerror(-err), -err);
return TRUE;
}
static bool uhid_send_input_report(struct input_device *idev,
const uint8_t *data, size_t size)
{
struct uhid_event ev;
int err;
if (data == NULL)
size = 0;
if (size > sizeof(ev.u.input.data))
size = sizeof(ev.u.input.data);
if (!idev->uhid_created) {
DBG("HID report (%zu bytes) dropped", size);
return false;
}
memset(&ev, 0, sizeof(ev));
ev.type = UHID_INPUT;
ev.u.input.size = size;
if (size > 0)
memcpy(ev.u.input.data, data, size);
err = bt_uhid_send(idev->uhid, &ev);
if (err < 0) {
error("bt_uhid_send: %s (%d)", strerror(-err), -err);
return false;
}
DBG("HID report (%zu bytes)", size);
return true;
}
static void get_report_cb(guint8 status, const guint8 *pdu, guint16 len,
gpointer user_data)
{
struct hog_device *hogdev = user_data;
struct uhid_event rsp;
int err;
hogdev->getrep_att = 0;
memset(&rsp, 0, sizeof(rsp));
rsp.type = UHID_GET_REPORT_REPLY;
rsp.u.get_report_reply.id = hogdev->getrep_id;
if (status != 0) {
error("Error reading Report value: %s", att_ecode2str(status));
goto exit;
}
if (len == 0) {
error("Error reading Report, length %d", len);
status = EIO;
goto exit;
}
if (pdu[0] != 0x0b) {
error("Error reading Report, invalid response: %02x", pdu[0]);
status = EPROTO;
goto exit;
}
--len;
++pdu;
if (hogdev->has_report_id && len > 0) {
--len;
++pdu;
}
rsp.u.get_report_reply.size = len;
memcpy(rsp.u.get_report_reply.data, pdu, len);
exit:
rsp.u.get_report_reply.err = status;
err = bt_uhid_send(hogdev->uhid, &rsp);
if (err < 0)
error("bt_uhid_send: %s", strerror(-err));
}
static void set_report_cb(guint8 status, const guint8 *pdu,
guint16 plen, gpointer user_data)
{
struct hog_device *hogdev = user_data;
struct uhid_event rsp;
int err;
hogdev->setrep_att = 0;
memset(&rsp, 0, sizeof(rsp));
rsp.type = UHID_SET_REPORT_REPLY;
rsp.u.set_report_reply.id = hogdev->setrep_id;
rsp.u.set_report_reply.err = status;
if (status != 0)
error("Error setting Report value: %s", att_ecode2str(status));
err = bt_uhid_send(hogdev->uhid, &rsp);
if (err < 0)
error("bt_uhid_send: %s", strerror(-err));
}
static void report_value_cb(const guint8 *pdu, guint16 len, gpointer user_data)
{
struct report *report = user_data;
struct hog_device *hogdev = report->hogdev;
struct uhid_event ev;
uint8_t *buf;
int err;
if (len < ATT_NOTIFICATION_HEADER_SIZE) {
error("Malformed ATT notification");
return;
}
pdu += ATT_NOTIFICATION_HEADER_SIZE;
len -= ATT_NOTIFICATION_HEADER_SIZE;
memset(&ev, 0, sizeof(ev));
ev.type = UHID_INPUT;
buf = ev.u.input.data;
if (hogdev->has_report_id) {
buf[0] = report->id;
len = MIN(len, sizeof(ev.u.input.data) - 1);
memcpy(buf + 1, pdu, len);
ev.u.input.size = ++len;
} else {
len = MIN(len, sizeof(ev.u.input.data));
memcpy(buf, pdu, len);
ev.u.input.size = len;
}
err = bt_uhid_send(hogdev->uhid, &ev);
if (err < 0) {
error("bt_uhid_send: %s (%d)", strerror(-err), -err);
return;
}
DBG("HoG report (%u bytes)", ev.u.input.size);
}
static bool uhid_send_feature_answer(struct input_device *idev,
const uint8_t *data, size_t size,
uint32_t id, uint16_t err)
{
struct uhid_event ev;
int ret;
if (data == NULL)
size = 0;
if (size > sizeof(ev.u.feature_answer.data))
size = sizeof(ev.u.feature_answer.data);
if (!idev->uhid_created) {
DBG("HID report (%zu bytes) dropped", size);
return false;
}
memset(&ev, 0, sizeof(ev));
ev.type = UHID_FEATURE_ANSWER;
ev.u.feature_answer.id = id;
ev.u.feature_answer.err = err;
ev.u.feature_answer.size = size;
if (size > 0)
memcpy(ev.u.feature_answer.data, data, size);
ret = bt_uhid_send(idev->uhid, &ev);
if (ret < 0) {
error("bt_uhid_send: %s (%d)", strerror(-ret), -ret);
return false;
}
DBG("HID report (%zu bytes)", size);
return true;
}
static int uhid_create(struct hid_device *dev)
{
struct uhid_event ev;
int err;
dev->uhid = bt_uhid_new_default();
if (!dev->uhid) {
err = -errno;
error("hidhost: Failed to create bt_uhid instance");
return err;
}
memset(&ev, 0, sizeof(ev));
ev.type = UHID_CREATE;
strcpy((char *) ev.u.create.name, "bluez-input-device");
ev.u.create.bus = BUS_BLUETOOTH;
ev.u.create.vendor = dev->vendor;
ev.u.create.product = dev->product;
ev.u.create.version = dev->version;
ev.u.create.country = dev->country;
ev.u.create.rd_size = dev->rd_size;
ev.u.create.rd_data = dev->rd_data;
err = bt_uhid_send(dev->uhid, &ev);
if (err < 0) {
error("hidhost: Failed to create uHID device: %s",
strerror(-err));
bt_uhid_unref(dev->uhid);
dev->uhid = NULL;
return err;
}
bt_uhid_register(dev->uhid, UHID_OUTPUT, handle_uhid_output, dev);
bt_hid_set_info(dev);
return 0;
}
static int uhid_connadd(struct input_device *idev, struct hidp_connadd_req *req)
{
int err;
struct uhid_event ev;
if (idev->uhid_created)
return 0;
/* create uHID device */
memset(&ev, 0, sizeof(ev));
ev.type = UHID_CREATE;
strncpy((char *) ev.u.create.name, req->name,
sizeof(ev.u.create.name) - 1);
ba2str(&idev->src, (char *) ev.u.create.phys);
ba2str(&idev->dst, (char *) ev.u.create.uniq);
ev.u.create.vendor = req->vendor;
ev.u.create.product = req->product;
ev.u.create.version = req->version;
ev.u.create.country = req->country;
ev.u.create.bus = BUS_BLUETOOTH;
ev.u.create.rd_data = req->rd_data;
ev.u.create.rd_size = req->rd_size;
err = bt_uhid_send(idev->uhid, &ev);
if (err < 0) {
error("bt_uhid_send: %s", strerror(-err));
return err;
}
bt_uhid_register(idev->uhid, UHID_OUTPUT, hidp_send_set_report, idev);
bt_uhid_register(idev->uhid, UHID_FEATURE, hidp_send_get_report, idev);
idev->uhid_created = true;
return err;
}
static void report_map_read_cb(guint8 status, const guint8 *pdu, guint16 plen,
gpointer user_data)
{
struct hog_device *hogdev = user_data;
struct btd_adapter *adapter = device_get_adapter(hogdev->device);
uint8_t value[HOG_REPORT_MAP_MAX_SIZE];
struct uhid_event ev;
uint16_t vendor_src, vendor, product, version;
ssize_t vlen;
char itemstr[20]; /* 5x3 (data) + 4 (continuation) + 1 (null) */
int i, err;
if (status != 0) {
error("Report Map read failed: %s", att_ecode2str(status));
return;
}
vlen = dec_read_resp(pdu, plen, value, sizeof(value));
if (vlen < 0) {
error("ATT protocol error");
return;
}
DBG("Report MAP:");
for (i = 0; i < vlen;) {
ssize_t ilen = 0;
bool long_item = false;
if (get_descriptor_item_info(&value[i], vlen - i, &ilen,
&long_item)) {
/* Report ID is short item with prefix 100001xx */
if (!long_item && (value[i] & 0xfc) == 0x84)
hogdev->has_report_id = TRUE;
DBG("\t%s", item2string(itemstr, &value[i], ilen));
i += ilen;
} else {
error("Report Map parsing failed at %d", i);
/* Just print remaining items at once and break */
DBG("\t%s", item2string(itemstr, &value[i], vlen - i));
break;
}
}
vendor_src = btd_device_get_vendor_src(hogdev->device);
vendor = btd_device_get_vendor(hogdev->device);
product = btd_device_get_product(hogdev->device);
version = btd_device_get_version(hogdev->device);
DBG("DIS information: vendor_src=0x%X, vendor=0x%X, product=0x%X, "
"version=0x%X", vendor_src, vendor, product, version);
/* create uHID device */
memset(&ev, 0, sizeof(ev));
ev.type = UHID_CREATE;
if (device_name_known(hogdev->device))
device_get_name(hogdev->device, (char *) ev.u.create.name,
sizeof(ev.u.create.name));
else
strcpy((char *) ev.u.create.name, "bluez-hog-device");
ba2str(btd_adapter_get_address(adapter), (char *) ev.u.create.phys);
ba2str(device_get_address(hogdev->device), (char *) ev.u.create.uniq);
ev.u.create.vendor = vendor;
ev.u.create.product = product;
ev.u.create.version = version;
ev.u.create.country = hogdev->bcountrycode;
ev.u.create.bus = BUS_BLUETOOTH;
ev.u.create.rd_data = value;
ev.u.create.rd_size = vlen;
err = bt_uhid_send(hogdev->uhid, &ev);
if (err < 0) {
error("bt_uhid_send: %s", strerror(-err));
return;
}
bt_uhid_register(hogdev->uhid, UHID_OUTPUT, forward_report, hogdev);
bt_uhid_register(hogdev->uhid, UHID_SET_REPORT, set_report, hogdev);
bt_uhid_register(hogdev->uhid, UHID_GET_REPORT, get_report, hogdev);
}
static void report_map_read_cb(guint8 status, const guint8 *pdu, guint16 plen,
gpointer user_data)
{
struct bt_hog *hog = user_data;
uint8_t value[HOG_REPORT_MAP_MAX_SIZE];
struct uhid_event ev;
ssize_t vlen;
char itemstr[20]; /* 5x3 (data) + 4 (continuation) + 1 (null) */
int i, err;
GError *gerr = NULL;
if (status != 0) {
error("Report Map read failed: %s", att_ecode2str(status));
return;
}
vlen = dec_read_resp(pdu, plen, value, sizeof(value));
if (vlen < 0) {
error("ATT protocol error");
return;
}
DBG("Report MAP:");
for (i = 0; i < vlen;) {
ssize_t ilen = 0;
bool long_item = false;
if (get_descriptor_item_info(&value[i], vlen - i, &ilen,
&long_item)) {
/* Report ID is short item with prefix 100001xx */
if (!long_item && (value[i] & 0xfc) == 0x84)
hog->has_report_id = TRUE;
DBG("\t%s", item2string(itemstr, &value[i], ilen));
i += ilen;
} else {
error("Report Map parsing failed at %d", i);
/* Just print remaining items at once and break */
DBG("\t%s", item2string(itemstr, &value[i], vlen - i));
break;
}
}
/* create uHID device */
memset(&ev, 0, sizeof(ev));
ev.type = UHID_CREATE;
bt_io_get(g_attrib_get_channel(hog->attrib), &gerr,
BT_IO_OPT_SOURCE, ev.u.create.phys,
BT_IO_OPT_DEST, ev.u.create.uniq,
BT_IO_OPT_INVALID);
if (gerr) {
error("Failed to connection details: %s", gerr->message);
g_error_free(gerr);
return;
}
strcpy((char *) ev.u.create.name, hog->name);
ev.u.create.vendor = hog->vendor;
ev.u.create.product = hog->product;
ev.u.create.version = hog->version;
ev.u.create.country = hog->bcountrycode;
ev.u.create.bus = BUS_BLUETOOTH;
ev.u.create.rd_data = value;
ev.u.create.rd_size = vlen;
err = bt_uhid_send(hog->uhid, &ev);
if (err < 0) {
error("bt_uhid_send: %s", strerror(-err));
return;
}
bt_uhid_register(hog->uhid, UHID_OUTPUT, forward_report, hog);
bt_uhid_register(hog->uhid, UHID_FEATURE, forward_report, hog);
}
