/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use device::bluetooth::BluetoothAdapter;
use device::bluetooth::BluetoothDevice;
use device::bluetooth::BluetoothGATTCharacteristic;
use device::bluetooth::BluetoothGATTDescriptor;
use device::bluetooth::BluetoothGATTService;
use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
use net_traits::bluetooth_scanfilter::{BluetoothScanfilter, BluetoothScanfilterSequence, RequestDeviceoptions};
use net_traits::bluetooth_thread::{BluetoothCharacteristicMsg, BluetoothCharacteristicsMsg};
use net_traits::bluetooth_thread::{BluetoothDescriptorMsg, BluetoothDescriptorsMsg};
use net_traits::bluetooth_thread::{BluetoothDeviceMsg, BluetoothError, BluetoothMethodMsg};
use net_traits::bluetooth_thread::{BluetoothResult, BluetoothServiceMsg, BluetoothServicesMsg};
use rand::{self, Rng};
use std::borrow::ToOwned;
use std::collections::{HashMap, HashSet};
use std::string::String;
use std::thread;
use std::time::Duration;
#[cfg(target_os = "linux")]
use tinyfiledialogs;
use util::thread::spawn_named;
const ADAPTER_ERROR: &'static str = "No adapter found";
// A transaction not completed within 30 seconds shall time out. Such a transaction shall be considered to have failed.
// https://www.bluetooth.org/DocMan/handlers/DownloadDoc.ashx?doc_id=286439 (Vol. 3, page 480)
const MAXIMUM_TRANSACTION_TIME: u8 = 30;
const CONNECTION_TIMEOUT_MS: u64 = 1000;
// The discovery session needs some time to find any nearby devices
const DISCOVERY_TIMEOUT_MS: u64 = 1500;
#[cfg(target_os = "linux")]
const DIALOG_TITLE: &'static str = "Choose a device";
#[cfg(target_os = "linux")]
const DIALOG_COLUMN_ID: &'static str = "Id";
#[cfg(target_os = "linux")]
const DIALOG_COLUMN_NAME: &'static str = "Name";
bitflags! {
flags Flags: u32 {
const BROADCAST = 0b000000001,
const READ = 0b000000010,
const WRITE_WITHOUT_RESPONSE = 0b000000100,
const WRITE = 0b000001000,
const NOTIFY = 0b000010000,
const INDICATE = 0b000100000,
const AUTHENTICATED_SIGNED_WRITES = 0b001000000,
const RELIABLE_WRITE = 0b010000000,
const WRITABLE_AUXILIARIES = 0b100000000,
}
}
macro_rules! return_if_cached(
($cache:expr, $key:expr) => (
if $cache.contains_key($key) {
return $cache.get($key);
}
);
);
macro_rules! get_adapter_or_return_error(
($bl_manager:expr, $sender:expr) => (
match $bl_manager.get_or_create_adapter() {
Some(adapter) => adapter,
None => return drop($sender.send(Err(BluetoothError::Type(ADAPTER_ERROR.to_string())))),
}
);
);
pub trait BluetoothThreadFactory {
fn new() -> Self;
}
impl BluetoothThreadFactory for IpcSender<BluetoothMethodMsg> {
fn new() -> IpcSender<BluetoothMethodMsg> {
let (sender, receiver) = ipc::channel().unwrap();
let adapter = BluetoothAdapter::init().ok();
spawn_named("BluetoothThread".to_owned(), move || {
BluetoothManager::new(receiver, adapter).start();
});
sender
}
}
// https://webbluetoothcg.github.io/web-bluetooth/#matches-a-filter
fn matches_filter(device: &BluetoothDevice, filter: &BluetoothScanfilter) -> bool {
if filter.is_empty_or_invalid() {
return false;
}
// Step 1.
if !filter.get_name().is_empty() {
if device.get_name().ok() != Some(filter.get_name().to_string()) {
return false;
}
}
// Step 2.
if !filter.get_name_prefix().is_empty() {
if let Ok(device_name) = device.get_name() {
if !device_name.starts_with(filter.get_name_prefix()) {
return false;
}
} else {
return false;
}
}
// Step 3.
if !filter.get_services().is_empty() {
if let Ok(device_uuids) = device.get_uuids() {
for service in filter.get_services() {
if device_uuids.iter().find(|x| x == &service).is_none() {
return false;
}
}
}
}
// Step 4.
// TODO: Implement get_manufacturer_data in device crate.
// if let Some(manufacturer_id) = filter.get_manufacturer_id() {
// if !device.get_manufacturer_data().contains_key(manufacturer_id) {
// return false;
// }
// }
//
// Step 5.
// TODO: Implement get_device_data in device crate.
// if !filter.get_service_data_uuid().is_empty() {
// if !device.get_service_data().contains_key(filter.get_service_data_uuid()) {
// return false;
// }
// }
// Step 6.
true
}
fn matches_filters(device: &BluetoothDevice, filters: &BluetoothScanfilterSequence) -> bool {
if filters.has_empty_or_invalid_filter() {
return false;
}
return filters.iter().any(|f| matches_filter(device, f))
}
pub struct BluetoothManager {
receiver: IpcReceiver<BluetoothMethodMsg>,
adapter: Option<BluetoothAdapter>,
address_to_id: HashMap<String, String>,
service_to_device: HashMap<String, String>,
characteristic_to_service: HashMap<String, String>,
descriptor_to_characteristic: HashMap<String, String>,
cached_devices: HashMap<String, BluetoothDevice>,
cached_services: HashMap<String, BluetoothGATTService>,
cached_characteristics: HashMap<String, BluetoothGATTCharacteristic>,
cached_descriptors: HashMap<String, BluetoothGATTDescriptor>,
allowed_services: HashMap<String, HashSet<String>>,
}
impl BluetoothManager {
pub fn new(receiver: IpcReceiver<BluetoothMethodMsg>, adapter: Option<BluetoothAdapter>) -> BluetoothManager {
BluetoothManager {
receiver: receiver,
adapter: adapter,
address_to_id: HashMap::new(),
service_to_device: HashMap::new(),
characteristic_to_service: HashMap::new(),
descriptor_to_characteristic: HashMap::new(),
cached_devices: HashMap::new(),
cached_services: HashMap::new(),
cached_characteristics: HashMap::new(),
cached_descriptors: HashMap::new(),
allowed_services: HashMap::new(),
}
}
fn start(&mut self) {
while let Ok(msg) = self.receiver.recv() {
match msg {
BluetoothMethodMsg::RequestDevice(options, sender) => {
self.request_device(options, sender)
},
BluetoothMethodMsg::GATTServerConnect(device_id, sender) => {
self.gatt_server_connect(device_id, sender)
},
BluetoothMethodMsg::GATTServerDisconnect(device_id, sender) => {
self.gatt_server_disconnect(device_id, sender)
},
BluetoothMethodMsg::GetPrimaryService(device_id, uuid, sender) => {
self.get_primary_service(device_id, uuid, sender)
},
BluetoothMethodMsg::GetPrimaryServices(device_id, uuid, sender) => {
self.get_primary_services(device_id, uuid, sender)
},
BluetoothMethodMsg::GetIncludedService(service_id, uuid, sender) => {
self.get_included_service(service_id, uuid, sender)
},
BluetoothMethodMsg::GetIncludedServices(service_id, uuid, sender) => {
self.get_included_services(service_id, uuid, sender)
},
BluetoothMethodMsg::GetCharacteristic(service_id, uuid, sender) => {
self.get_characteristic(service_id, uuid, sender)
},
BluetoothMethodMsg::GetCharacteristics(service_id, uuid, sender) => {
self.get_characteristics(service_id, uuid, sender)
},
BluetoothMethodMsg::GetDescriptor(characteristic_id, uuid, sender) => {
self.get_descriptor(characteristic_id, uuid, sender)
},
BluetoothMethodMsg::GetDescriptors(characteristic_id, uuid, sender) => {
self.get_descriptors(characteristic_id, uuid, sender)
},
BluetoothMethodMsg::ReadValue(id, sender) => {
self.read_value(id, sender)
},
BluetoothMethodMsg::WriteValue(id, value, sender) => {
self.write_value(id, value, sender)
},
BluetoothMethodMsg::Exit => {
break
},
}
}
}
// Adapter
fn get_or_create_adapter(&mut self) -> Option<BluetoothAdapter> {
let adapter_valid = self.adapter.as_ref().map_or(false, |a| a.get_address().is_ok());
if !adapter_valid {
self.adapter = BluetoothAdapter::init().ok();
}
self.adapter.clone()
}
// Device
fn get_and_cache_devices(&mut self, adapter: &mut BluetoothAdapter) -> Vec<BluetoothDevice> {
let devices = adapter.get_devices().unwrap_or(vec!());
for device in &devices {
if let Ok(address) = device.get_address() {
if !self.address_to_id.contains_key(&address) {
let generated_id = self.generate_device_id();
self.address_to_id.insert(address, generated_id.clone());
self.cached_devices.insert(generated_id.clone(), device.clone());
self.allowed_services.insert(generated_id, HashSet::new());
}
}
}
self.cached_devices.iter().map(|(_, d)| d.clone()).collect()
}
fn get_device(&mut self, adapter: &mut BluetoothAdapter, device_id: &str) -> Option<&BluetoothDevice> {
return_if_cached!(self.cached_devices, device_id);
self.get_and_cache_devices(adapter);
return_if_cached!(self.cached_devices, device_id);
None
}
#[cfg(target_os = "linux")]
fn select_device(&mut self, devices: Vec<BluetoothDevice>) -> Option<String> {
let mut dialog_rows: Vec<String> = vec!();
for device in devices {
dialog_rows.extend_from_slice(&[device.get_address().unwrap_or("".to_string()),
device.get_name().unwrap_or("".to_string())]);
}
let dialog_rows: Vec<&str> = dialog_rows.iter()
.map(|s| s.as_ref())
.collect();
let dialog_rows: &[&str] = dialog_rows.as_slice();
if let Some(device) = tinyfiledialogs::list_dialog(DIALOG_TITLE,
&[DIALOG_COLUMN_ID, DIALOG_COLUMN_NAME],
Some(dialog_rows)) {
// The device string format will be "Address|Name". We need the first part of it.
return device.split("|").next().map(|s| s.to_string());
}
None
}
#[cfg(not(target_os = "linux"))]
fn select_device(&mut self, devices: Vec<BluetoothDevice>) -> Option<String> {
for device in devices {
if let Ok(address) = device.get_address() {
return Some(address);
}
}
None
}
fn generate_device_id(&mut self) -> String {
let mut device_id;
let mut rng = rand::thread_rng();
loop {
device_id = rng.gen::<u32>().to_string();
if !self.cached_devices.contains_key(&device_id) {
break;
}
}
device_id
}
// Service
fn get_and_cache_gatt_services(&mut self,
adapter: &mut BluetoothAdapter,
device_id: &str)
-> Vec<BluetoothGATTService> {
let services = match self.get_device(adapter, device_id) {
Some(d) => d.get_gatt_services().unwrap_or(vec!()),
None => vec!(),
};
for service in &services {
self.cached_services.insert(service.get_id(), service.clone());
self.service_to_device.insert(service.get_id(), device_id.to_owned());
}
services
}
fn get_gatt_service(&mut self, adapter: &mut BluetoothAdapter, service_id: &str) -> Option<&BluetoothGATTService> {
return_if_cached!(self.cached_services, service_id);
let device_id = match self.service_to_device.get(service_id) {
Some(d) => d.clone(),
None => return None,
};
self.get_and_cache_gatt_services(adapter, &device_id);
return_if_cached!(self.cached_services, service_id);
None
}
fn get_gatt_services_by_uuid(&mut self,
adapter: &mut BluetoothAdapter,
device_id: &str,
service_uuid: &str)
-> Vec<BluetoothGATTService> {
let services = self.get_and_cache_gatt_services(adapter, device_id);
services.into_iter().filter(|s| s.get_uuid().ok() == Some(service_uuid.to_string())).collect()
}
// Characteristic
fn get_and_cache_gatt_characteristics(&mut self,
adapter: &mut BluetoothAdapter,
service_id: &str)
-> Vec<BluetoothGATTCharacteristic> {
let characteristics = match self.get_gatt_service(adapter, service_id) {
Some(s) => s.get_gatt_characteristics().unwrap_or(vec!()),
None => vec!(),
};
for characteristic in &characteristics {
self.cached_characteristics.insert(characteristic.get_id(), characteristic.clone());
self.characteristic_to_service.insert(characteristic.get_id(), service_id.to_owned());
}
characteristics
}
fn get_gatt_characteristic(&mut self,
adapter: &mut BluetoothAdapter,
characteristic_id: &str)
-> Option<&BluetoothGATTCharacteristic> {
return_if_cached!(self.cached_characteristics, characteristic_id);
let service_id = match self.characteristic_to_service.get(characteristic_id) {
Some(s) => s.clone(),
None => return None,
};
self.get_and_cache_gatt_characteristics(adapter, &service_id);
return_if_cached!(self.cached_characteristics, characteristic_id);
None
}
fn get_gatt_characteristics_by_uuid(&mut self,
adapter: &mut BluetoothAdapter,
service_id: &str,
characteristic_uuid: &str)
-> Vec<BluetoothGATTCharacteristic> {
let characteristics = self.get_and_cache_gatt_characteristics(adapter, service_id);
characteristics.into_iter()
.filter(|c| c.get_uuid().ok() == Some(characteristic_uuid.to_string()))
.collect()
}
fn get_characteristic_properties(&self, characteristic: &BluetoothGATTCharacteristic) -> Flags {
let mut props: Flags = Flags::empty();
let flags = characteristic.get_flags().unwrap_or(vec!());
for flag in flags {
match flag.as_ref() {
"broadcast" => props.insert(BROADCAST),
"read" => props.insert(READ),
"write_without_response" => props.insert(WRITE_WITHOUT_RESPONSE),
"write" => props.insert(WRITE),
"notify" => props.insert(NOTIFY),
"indicate" => props.insert(INDICATE),
"authenticated_signed_writes" => props.insert(AUTHENTICATED_SIGNED_WRITES),
"reliable_write" => props.insert(RELIABLE_WRITE),
"writable_auxiliaries" => props.insert(WRITABLE_AUXILIARIES),
_ => (),
}
}
props
}
// Descriptor
fn get_and_cache_gatt_descriptors(&mut self,
adapter: &mut BluetoothAdapter,
characteristic_id: &str)
-> Vec<BluetoothGATTDescriptor> {
let descriptors = match self.get_gatt_characteristic(adapter, characteristic_id) {
Some(c) => c.get_gatt_descriptors().unwrap_or(vec!()),
None => vec!(),
};
for descriptor in &descriptors {
self.cached_descriptors.insert(descriptor.get_id(), descriptor.clone());
self.descriptor_to_characteristic.insert(descriptor.get_id(), characteristic_id.to_owned());
}
descriptors
}
fn get_gatt_descriptor(&mut self,
adapter: &mut BluetoothAdapter,
descriptor_id: &str)
-> Option<&BluetoothGATTDescriptor> {
return_if_cached!(self.cached_descriptors, descriptor_id);
let characteristic_id = match self.descriptor_to_characteristic.get(descriptor_id) {
Some(c) => c.clone(),
None => return None,
};
self.get_and_cache_gatt_descriptors(adapter, &characteristic_id);
return_if_cached!(self.cached_descriptors, descriptor_id);
None
}
fn get_gatt_descriptors_by_uuid(&mut self,
adapter: &mut BluetoothAdapter,
characteristic_id: &str,
descriptor_uuid: &str)
-> Vec<BluetoothGATTDescriptor> {
let descriptors = self.get_and_cache_gatt_descriptors(adapter, characteristic_id);
descriptors.into_iter()
.filter(|d| d.get_uuid().ok() == Some(descriptor_uuid.to_string()))
.collect()
}
// Methods
// https://webbluetoothcg.github.io/web-bluetooth/#request-bluetooth-devices
fn request_device(&mut self,
options: RequestDeviceoptions,
sender: IpcSender<BluetoothResult<BluetoothDeviceMsg>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
if let Ok(ref session) = adapter.create_discovery_session() {
if session.start_discovery().is_ok() {
thread::sleep(Duration::from_millis(DISCOVERY_TIMEOUT_MS));
}
let _ = session.stop_discovery();
}
// Step 6.
// Note: There is no requiredServiceUUIDS, we scan for all devices.
let mut matched_devices = self.get_and_cache_devices(&mut adapter);
// Step 7.
if !options.is_accepting_all_devices() {
matched_devices = matched_devices.into_iter()
.filter(|d| matches_filters(d, options.get_filters()))
.collect();
}
// Step 8.
if let Some(address) = self.select_device(matched_devices) {
let device_id = match self.address_to_id.get(&address) {
Some(id) => id.clone(),
None => return drop(sender.send(Err(BluetoothError::NotFound))),
};
let mut services = options.get_services_set();
if let Some(services_set) = self.allowed_services.get(&device_id) {
services = services_set | &services;
}
self.allowed_services.insert(device_id.clone(), services);
if let Some(device) = self.get_device(&mut adapter, &device_id) {
let message = Ok(BluetoothDeviceMsg {
id: device_id,
name: device.get_name().ok(),
appearance: device.get_appearance().ok(),
tx_power: device.get_tx_power().ok().map(|p| p as i8),
rssi: device.get_rssi().ok().map(|p| p as i8),
});
return drop(sender.send(message));
}
}
return drop(sender.send(Err(BluetoothError::NotFound)));
}
fn gatt_server_connect(&mut self, device_id: String, sender: IpcSender<BluetoothResult<bool>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
match self.get_device(&mut adapter, &device_id) {
Some(d) => {
if d.is_connected().unwrap_or(false) {
return drop(sender.send(Ok(true)));
}
let _ = d.connect();
for _ in 0..MAXIMUM_TRANSACTION_TIME {
match d.is_connected().unwrap_or(false) {
true => return drop(sender.send(Ok(true))),
false => thread::sleep(Duration::from_millis(CONNECTION_TIMEOUT_MS)),
}
}
return drop(sender.send(Err(BluetoothError::Network)));
},
None => return drop(sender.send(Err(BluetoothError::NotFound))),
}
}
fn gatt_server_disconnect(&mut self, device_id: String, sender: IpcSender<BluetoothResult<bool>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
match self.get_device(&mut adapter, &device_id) {
Some(d) => {
if !d.is_connected().unwrap_or(true) {
return drop(sender.send(Ok(false)));
}
let _ = d.disconnect();
for _ in 0..MAXIMUM_TRANSACTION_TIME {
match d.is_connected().unwrap_or(true) {
true => thread::sleep(Duration::from_millis(CONNECTION_TIMEOUT_MS)),
false => return drop(sender.send(Ok(false))),
}
}
return drop(sender.send(Err(BluetoothError::Network)));
},
None => return drop(sender.send(Err(BluetoothError::NotFound))),
}
}
fn get_primary_service(&mut self,
device_id: String,
uuid: String,
sender: IpcSender<BluetoothResult<BluetoothServiceMsg>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
if !self.allowed_services.get(&device_id).map_or(false, |s| s.contains(&uuid)) {
return drop(sender.send(Err(BluetoothError::Security)));
}
let services = self.get_gatt_services_by_uuid(&mut adapter, &device_id, &uuid);
if services.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
for service in services {
if service.is_primary().unwrap_or(false) {
if let Ok(uuid) = service.get_uuid() {
return drop(sender.send(Ok(BluetoothServiceMsg {
uuid: uuid,
is_primary: true,
instance_id: service.get_id(),
})));
}
}
}
return drop(sender.send(Err(BluetoothError::NotFound)));
}
fn get_primary_services(&mut self,
device_id: String,
uuid: Option<String>,
sender: IpcSender<BluetoothResult<BluetoothServicesMsg>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
let services = match uuid {
Some(ref id) => {
if !self.allowed_services.get(&device_id).map_or(false, |s| s.contains(id)) {
return drop(sender.send(Err(BluetoothError::Security)))
}
self.get_gatt_services_by_uuid(&mut adapter, &device_id, id)
},
None => self.get_and_cache_gatt_services(&mut adapter, &device_id),
};
if services.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
let mut services_vec = vec!();
for service in services {
if service.is_primary().unwrap_or(false) {
if let Ok(uuid) = service.get_uuid() {
services_vec.push(BluetoothServiceMsg {
uuid: uuid,
is_primary: true,
instance_id: service.get_id(),
});
}
}
}
if services_vec.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
let _ = sender.send(Ok(services_vec));
}
fn get_included_service(&mut self,
service_id: String,
uuid: String,
sender: IpcSender<BluetoothResult<BluetoothServiceMsg>>) {
let mut adapter = match self.get_or_create_adapter() {
Some(a) => a,
None => return drop(sender.send(Err(BluetoothError::Type(ADAPTER_ERROR.to_string())))),
};
let primary_service = match self.get_gatt_service(&mut adapter, &service_id) {
Some(s) => s,
None => return drop(sender.send(Err(BluetoothError::NotFound))),
};
let services = primary_service.get_includes().unwrap_or(vec!());
for service in services {
if let Ok(service_uuid) = service.get_uuid() {
if uuid == service_uuid {
return drop(sender.send(Ok(BluetoothServiceMsg {
uuid: uuid,
is_primary: service.is_primary().unwrap_or(false),
instance_id: service.get_id(),
})));
}
}
}
return drop(sender.send(Err(BluetoothError::NotFound)));
}
fn get_included_services(&mut self,
service_id: String,
uuid: Option<String>,
sender: IpcSender<BluetoothResult<BluetoothServicesMsg>>) {
let mut adapter = match self.get_or_create_adapter() {
Some(a) => a,
None => return drop(sender.send(Err(BluetoothError::Type(ADAPTER_ERROR.to_string())))),
};
let primary_service = match self.get_gatt_service(&mut adapter, &service_id) {
Some(s) => s,
None => return drop(sender.send(Err(BluetoothError::NotFound))),
};
let services = primary_service.get_includes().unwrap_or(vec!());
let mut services_vec = vec!();
for service in services {
if let Ok(service_uuid) = service.get_uuid() {
services_vec.push(BluetoothServiceMsg {
uuid: service_uuid,
is_primary: service.is_primary().unwrap_or(false),
instance_id: service.get_id(),
});
}
}
if let Some(uuid) = uuid {
services_vec.retain(|ref s| s.uuid == uuid);
}
if services_vec.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
let _ = sender.send(Ok(services_vec));
}
fn get_characteristic(&mut self,
service_id: String,
uuid: String,
sender: IpcSender<BluetoothResult<BluetoothCharacteristicMsg>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
let characteristics = self.get_gatt_characteristics_by_uuid(&mut adapter, &service_id, &uuid);
if characteristics.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
for characteristic in characteristics {
if let Ok(uuid) = characteristic.get_uuid() {
let properties = self.get_characteristic_properties(&characteristic);
let message = Ok(BluetoothCharacteristicMsg {
uuid: uuid,
instance_id: characteristic.get_id(),
broadcast: properties.contains(BROADCAST),
read: properties.contains(READ),
write_without_response: properties.contains(WRITE_WITHOUT_RESPONSE),
write: properties.contains(WRITE),
notify: properties.contains(NOTIFY),
indicate: properties.contains(INDICATE),
authenticated_signed_writes: properties.contains(AUTHENTICATED_SIGNED_WRITES),
reliable_write: properties.contains(RELIABLE_WRITE),
writable_auxiliaries: properties.contains(WRITABLE_AUXILIARIES),
});
return drop(sender.send(message));
}
}
return drop(sender.send(Err(BluetoothError::NotFound)));
}
fn get_characteristics(&mut self,
service_id: String,
uuid: Option<String>,
sender: IpcSender<BluetoothResult<BluetoothCharacteristicsMsg>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
let characteristics = match uuid {
Some(id) => self.get_gatt_characteristics_by_uuid(&mut adapter, &service_id, &id),
None => self.get_and_cache_gatt_characteristics(&mut adapter, &service_id),
};
if characteristics.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
let mut characteristics_vec = vec!();
for characteristic in characteristics {
if let Ok(uuid) = characteristic.get_uuid() {
let properties = self.get_characteristic_properties(&characteristic);
characteristics_vec.push(
BluetoothCharacteristicMsg {
uuid: uuid,
instance_id: characteristic.get_id(),
broadcast: properties.contains(BROADCAST),
read: properties.contains(READ),
write_without_response: properties.contains(WRITE_WITHOUT_RESPONSE),
write: properties.contains(WRITE),
notify: properties.contains(NOTIFY),
indicate: properties.contains(INDICATE),
authenticated_signed_writes: properties.contains(AUTHENTICATED_SIGNED_WRITES),
reliable_write: properties.contains(RELIABLE_WRITE),
writable_auxiliaries: properties.contains(WRITABLE_AUXILIARIES),
});
}
}
if characteristics_vec.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
let _ = sender.send(Ok(characteristics_vec));
}
fn get_descriptor(&mut self,
characteristic_id: String,
uuid: String,
sender: IpcSender<BluetoothResult<BluetoothDescriptorMsg>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
let descriptors = self.get_gatt_descriptors_by_uuid(&mut adapter, &characteristic_id, &uuid);
if descriptors.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
for descriptor in descriptors {
if let Ok(uuid) = descriptor.get_uuid() {
return drop(sender.send(Ok(BluetoothDescriptorMsg {
uuid: uuid,
instance_id: descriptor.get_id(),
})));
}
}
return drop(sender.send(Err(BluetoothError::NotFound)));
}
fn get_descriptors(&mut self,
characteristic_id: String,
uuid: Option<String>,
sender: IpcSender<BluetoothResult<BluetoothDescriptorsMsg>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
let descriptors = match uuid {
Some(id) => self.get_gatt_descriptors_by_uuid(&mut adapter, &characteristic_id, &id),
None => self.get_and_cache_gatt_descriptors(&mut adapter, &characteristic_id),
};
if descriptors.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
let mut descriptors_vec = vec!();
for descriptor in descriptors {
if let Ok(uuid) = descriptor.get_uuid() {
descriptors_vec.push(BluetoothDescriptorMsg {
uuid: uuid,
instance_id: descriptor.get_id(),
});
}
}
if descriptors_vec.is_empty() {
return drop(sender.send(Err(BluetoothError::NotFound)));
}
let _ = sender.send(Ok(descriptors_vec));
}
fn read_value(&mut self, id: String, sender: IpcSender<BluetoothResult<Vec<u8>>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
let mut value = self.get_gatt_characteristic(&mut adapter, &id)
.map(|c| c.read_value().unwrap_or(vec![]));
if value.is_none() {
value = self.get_gatt_descriptor(&mut adapter, &id)
.map(|d| d.read_value().unwrap_or(vec![]));
}
let _ = sender.send(value.ok_or(BluetoothError::NotSupported));
}
fn write_value(&mut self, id: String, value: Vec<u8>, sender: IpcSender<BluetoothResult<bool>>) {
let mut adapter = get_adapter_or_return_error!(self, sender);
let mut result = self.get_gatt_characteristic(&mut adapter, &id)
.map(|c| c.write_value(value.clone()));
if result.is_none() {
result = self.get_gatt_descriptor(&mut adapter, &id)
.map(|d| d.write_value(value.clone()));
}
let message = match result {
Some(v) => match v {
Ok(_) => Ok(true),
Err(_) => return drop(sender.send(Err(BluetoothError::NotSupported))),
},
None => return drop(sender.send(Err(BluetoothError::NotSupported))),
};
let _ = sender.send(message);
}
}