static DBusMessage *characteristic_read_value(DBusConnection *conn,
DBusMessage *msg, void *user_data)
{
struct characteristic *chrc = user_data;
struct bt_gatt_client *gatt = chrc->service->client->gatt;
struct async_dbus_op *op;
if (chrc->read_id)
return btd_error_in_progress(msg);
op = new0(struct async_dbus_op, 1);
if (!op)
return btd_error_failed(msg, "Failed to initialize request");
op->msg = dbus_message_ref(msg);
op->data = chrc;
chrc->read_id = bt_gatt_client_read_value(gatt, chrc->value_handle,
chrc_read_cb,
async_dbus_op_ref(op),
async_dbus_op_unref);
if (chrc->read_id)
return NULL;
async_dbus_op_free(op);
return btd_error_failed(msg, "Failed to send read request");
}
static DBusMessage *descriptor_read_value(DBusConnection *conn,
DBusMessage *msg, void *user_data)
{
struct descriptor *desc = user_data;
struct bt_gatt_client *gatt = desc->chrc->service->client->gatt;
struct async_dbus_op *op;
if (!gatt)
return btd_error_failed(msg, "Not connected");
if (desc->read_id)
return btd_error_in_progress(msg);
op = new0(struct async_dbus_op, 1);
op->msg = dbus_message_ref(msg);
op->data = desc;
desc->read_id = bt_gatt_client_read_value(gatt, desc->handle,
desc_read_cb,
async_dbus_op_ref(op),
async_dbus_op_unref);
if (desc->read_id)
return NULL;
async_dbus_op_free(op);
return btd_error_failed(msg, "Failed to send read request");
}
static void cmd_read_value(struct client *cli, char *cmd_str)
{
char *argv[2];
int argc = 0;
uint16_t handle;
char *endptr = NULL;
if (!bt_gatt_client_is_ready(cli->gatt)) {
printf("GATT client not initialized\n");
return;
}
if (!parse_args(cmd_str, 1, argv, &argc) || argc != 1) {
read_value_usage();
return;
}
handle = strtol(argv[0], &endptr, 16);
if (!endptr || *endptr != '\0' || !handle) {
printf("Invalid value handle: %s\n", argv[0]);
return;
}
if (!bt_gatt_client_read_value(cli->gatt, handle, read_cb,
NULL, NULL))
printf("Failed to initiate read value procedure\n");
}
static void handle_pnpid(struct btd_device *device, uint16_t value_handle)
{
struct bt_gatt_client *client = btd_device_get_gatt_client(device);
if (!bt_gatt_client_read_value(client, value_handle,
read_pnpid_cb, device, NULL))
DBG("Failed to send request to read pnpid");
}
static void read_ext_props(void *data, void *user_data)
{
struct characteristic *chrc = data;
bt_gatt_client_read_value(chrc->service->client->gatt,
chrc->ext_props_handle,
read_ext_props_cb,
chrc, NULL);
}
static void handle_appearance(struct gas *gas, uint16_t value_handle)
{
if (!bt_gatt_client_read_value(gas->client, value_handle,
read_appearance_cb, gas, NULL))
DBG("Failed to send request to read appearance");
}
