зеркало из https://github.com/mozilla/gecko-dev.git
949 строки
38 KiB
Rust
949 строки
38 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#[macro_use]
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extern crate bitflags;
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extern crate bluetooth_traits;
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extern crate device;
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extern crate ipc_channel;
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extern crate servo_rand;
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#[cfg(target_os = "linux")]
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extern crate tinyfiledialogs;
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extern crate uuid;
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pub mod test;
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use bluetooth_traits::{BluetoothCharacteristicMsg, BluetoothDescriptorMsg, BluetoothServiceMsg};
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use bluetooth_traits::{BluetoothDeviceMsg, BluetoothRequest, BluetoothResponse, GATTType};
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use bluetooth_traits::{BluetoothError, BluetoothResponseResult, BluetoothResult};
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use bluetooth_traits::blocklist::{uuid_is_blocklisted, Blocklist};
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use bluetooth_traits::scanfilter::{BluetoothScanfilter, BluetoothScanfilterSequence, RequestDeviceoptions};
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use device::bluetooth::{BluetoothAdapter, BluetoothDevice, BluetoothGATTCharacteristic};
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use device::bluetooth::{BluetoothGATTDescriptor, BluetoothGATTService};
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use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
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use servo_rand::Rng;
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use std::borrow::ToOwned;
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use std::collections::{HashMap, HashSet};
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use std::string::String;
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use std::thread;
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use std::time::Duration;
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// A transaction not completed within 30 seconds shall time out. Such a transaction shall be considered to have failed.
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// https://www.bluetooth.org/DocMan/handlers/DownloadDoc.ashx?doc_id=286439 (Vol. 3, page 480)
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const MAXIMUM_TRANSACTION_TIME: u8 = 30;
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const CONNECTION_TIMEOUT_MS: u64 = 1000;
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// The discovery session needs some time to find any nearby devices
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const DISCOVERY_TIMEOUT_MS: u64 = 1500;
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#[cfg(target_os = "linux")]
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const DIALOG_TITLE: &'static str = "Choose a device";
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#[cfg(target_os = "linux")]
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const DIALOG_COLUMN_ID: &'static str = "Id";
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#[cfg(target_os = "linux")]
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const DIALOG_COLUMN_NAME: &'static str = "Name";
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bitflags! {
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flags Flags: u32 {
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const BROADCAST = 0b000000001,
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const READ = 0b000000010,
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const WRITE_WITHOUT_RESPONSE = 0b000000100,
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const WRITE = 0b000001000,
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const NOTIFY = 0b000010000,
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const INDICATE = 0b000100000,
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const AUTHENTICATED_SIGNED_WRITES = 0b001000000,
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const RELIABLE_WRITE = 0b010000000,
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const WRITABLE_AUXILIARIES = 0b100000000,
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}
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}
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macro_rules! return_if_cached(
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($cache:expr, $key:expr) => (
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if $cache.contains_key($key) {
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return $cache.get($key);
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}
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);
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);
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pub trait BluetoothThreadFactory {
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fn new() -> Self;
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}
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impl BluetoothThreadFactory for IpcSender<BluetoothRequest> {
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fn new() -> IpcSender<BluetoothRequest> {
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let (sender, receiver) = ipc::channel().unwrap();
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let adapter = BluetoothAdapter::init().ok();
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thread::Builder::new().name("BluetoothThread".to_owned()).spawn(move || {
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BluetoothManager::new(receiver, adapter).start();
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}).expect("Thread spawning failed");
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sender
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}
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}
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// https://webbluetoothcg.github.io/web-bluetooth/#matches-a-filter
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fn matches_filter(device: &BluetoothDevice, filter: &BluetoothScanfilter) -> bool {
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if filter.is_empty_or_invalid() {
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return false;
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}
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// Step 1.
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if let Some(name) = filter.get_name() {
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if device.get_name().ok() != Some(name.to_string()) {
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return false;
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}
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}
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// Step 2.
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if !filter.get_name_prefix().is_empty() {
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if let Ok(device_name) = device.get_name() {
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if !device_name.starts_with(filter.get_name_prefix()) {
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return false;
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}
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} else {
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return false;
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}
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}
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// Step 3.
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if !filter.get_services().is_empty() {
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if let Ok(device_uuids) = device.get_uuids() {
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for service in filter.get_services() {
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if device_uuids.iter().find(|x| x == &service).is_none() {
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return false;
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}
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}
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}
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}
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// Step 4.
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if let Some(ref manufacturer_data) = filter.get_manufacturer_data() {
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let advertised_manufacturer_data = match device.get_manufacturer_data() {
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Ok(data) => data,
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Err(_) => return false,
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};
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for (ref id, &(ref prefix, ref mask)) in manufacturer_data.iter() {
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if let Some(advertised_data) = advertised_manufacturer_data.get(id) {
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if !data_filter_matches(advertised_data, prefix, mask) {
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return false;
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}
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} else {
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return false;
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}
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}
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}
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// Step 5.
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if let Some(ref service_data) = filter.get_service_data() {
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let advertised_service_data = match device.get_service_data() {
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Ok(data) => data,
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Err(_) => return false,
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};
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for (uuid, &(ref prefix, ref mask)) in service_data.iter() {
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if let Some(advertised_data) = advertised_service_data.get(uuid.as_str()) {
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if !data_filter_matches(advertised_data, prefix, mask) {
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return false;
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}
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} else {
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return false;
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}
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}
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}
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// Step 6.
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true
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}
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// https://webbluetoothcg.github.io/web-bluetooth/#bluetoothdatafilterinit-matches
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fn data_filter_matches(data: &[u8], prefix: &[u8], mask: &[u8]) -> bool {
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// Step 1-2: No need to copy the bytes here.
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// Step 3.
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if data.len() < prefix.len() {
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return false;
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}
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// Step 4.
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for ((data, mask), prefix) in data.iter().zip(mask.iter()).zip(prefix.iter()) {
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if data & mask != prefix & mask {
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return false;
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}
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}
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// Step 5.
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true
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}
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fn matches_filters(device: &BluetoothDevice, filters: &BluetoothScanfilterSequence) -> bool {
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if filters.has_empty_or_invalid_filter() {
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return false;
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}
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return filters.iter().any(|f| matches_filter(device, f))
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}
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fn is_mock_adapter(adapter: &BluetoothAdapter) -> bool {
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match adapter {
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&BluetoothAdapter::Mock(_) => true,
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_ => false,
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}
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}
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pub struct BluetoothManager {
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receiver: IpcReceiver<BluetoothRequest>,
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adapter: Option<BluetoothAdapter>,
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address_to_id: HashMap<String, String>,
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service_to_device: HashMap<String, String>,
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characteristic_to_service: HashMap<String, String>,
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descriptor_to_characteristic: HashMap<String, String>,
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cached_devices: HashMap<String, BluetoothDevice>,
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cached_services: HashMap<String, BluetoothGATTService>,
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cached_characteristics: HashMap<String, BluetoothGATTCharacteristic>,
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cached_descriptors: HashMap<String, BluetoothGATTDescriptor>,
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allowed_services: HashMap<String, HashSet<String>>,
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}
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impl BluetoothManager {
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pub fn new(receiver: IpcReceiver<BluetoothRequest>, adapter: Option<BluetoothAdapter>) -> BluetoothManager {
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BluetoothManager {
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receiver: receiver,
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adapter: adapter,
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address_to_id: HashMap::new(),
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service_to_device: HashMap::new(),
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characteristic_to_service: HashMap::new(),
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descriptor_to_characteristic: HashMap::new(),
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cached_devices: HashMap::new(),
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cached_services: HashMap::new(),
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cached_characteristics: HashMap::new(),
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cached_descriptors: HashMap::new(),
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allowed_services: HashMap::new(),
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}
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}
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fn start(&mut self) {
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while let Ok(msg) = self.receiver.recv() {
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match msg {
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BluetoothRequest::RequestDevice(options, sender) => {
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let _ = sender.send(self.request_device(options));
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},
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BluetoothRequest::GATTServerConnect(device_id, sender) => {
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let _ = sender.send(self.gatt_server_connect(device_id));
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},
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BluetoothRequest::GATTServerDisconnect(device_id, sender) => {
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let _ = sender.send(self.gatt_server_disconnect(device_id));
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},
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BluetoothRequest::GetGATTChildren(id, uuid, single, child_type, sender) => {
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let _ = sender.send(self.get_gatt_children(id, uuid, single, child_type));
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},
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BluetoothRequest::ReadValue(id, sender) => {
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let _ = sender.send(self.read_value(id));
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},
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BluetoothRequest::WriteValue(id, value, sender) => {
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let _ = sender.send(self.write_value(id, value));
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},
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BluetoothRequest::EnableNotification(id, enable, sender) => {
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let _ = sender.send(self.enable_notification(id, enable));
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},
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BluetoothRequest::WatchAdvertisements(id, sender) => {
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let _ = sender.send(self.watch_advertisements(id));
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},
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BluetoothRequest::Test(data_set_name, sender) => {
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let _ = sender.send(self.test(data_set_name));
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},
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BluetoothRequest::SetRepresentedToNull(service_ids, characteristic_ids, descriptor_ids) => {
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self.remove_ids_from_caches(service_ids, characteristic_ids, descriptor_ids)
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},
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BluetoothRequest::IsRepresentedDeviceNull(id, sender) => {
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let _ = sender.send(!self.device_is_cached(&id));
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},
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BluetoothRequest::GetAvailability(sender) => {
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let _ = sender.send(self.get_availability());
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},
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BluetoothRequest::MatchesFilter(id, filters, sender) => {
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let _ = sender.send(self.device_matches_filter(&id, &filters));
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},
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BluetoothRequest::Exit => {
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break
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},
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}
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}
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}
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// Test
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fn test(&mut self, data_set_name: String) -> BluetoothResult<()> {
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self.address_to_id.clear();
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self.service_to_device.clear();
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self.characteristic_to_service.clear();
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self.descriptor_to_characteristic.clear();
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self.cached_devices.clear();
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self.cached_services.clear();
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self.cached_characteristics.clear();
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self.cached_descriptors.clear();
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self.allowed_services.clear();
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self.adapter = BluetoothAdapter::init_mock().ok();
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match test::test(self, data_set_name) {
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Ok(_) => return Ok(()),
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Err(error) => Err(BluetoothError::Type(error.description().to_owned())),
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}
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}
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fn remove_ids_from_caches(&mut self,
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service_ids: Vec<String>,
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characteristic_ids: Vec<String>,
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descriptor_ids: Vec<String>) {
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for id in service_ids {
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self.cached_services.remove(&id);
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self.service_to_device.remove(&id);
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}
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for id in characteristic_ids {
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self.cached_characteristics.remove(&id);
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self.characteristic_to_service.remove(&id);
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}
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for id in descriptor_ids {
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self.cached_descriptors.remove(&id);
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self.descriptor_to_characteristic.remove(&id);
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}
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}
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// Adapter
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pub fn get_or_create_adapter(&mut self) -> Option<BluetoothAdapter> {
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let adapter_valid = self.adapter.as_ref().map_or(false, |a| a.get_address().is_ok());
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if !adapter_valid {
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self.adapter = BluetoothAdapter::init().ok();
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}
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let adapter = match self.adapter.as_ref() {
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Some(adapter) => adapter,
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None => return None,
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};
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if is_mock_adapter(adapter) && !adapter.is_present().unwrap_or(false) {
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return None;
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}
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self.adapter.clone()
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}
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fn get_adapter(&mut self) -> BluetoothResult<BluetoothAdapter> {
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match self.get_or_create_adapter() {
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Some(adapter) => {
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if !adapter.is_powered().unwrap_or(false) {
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return Err(BluetoothError::NotFound);
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}
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return Ok(adapter);
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},
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None => return Err(BluetoothError::NotFound),
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}
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}
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// Device
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fn get_and_cache_devices(&mut self, adapter: &mut BluetoothAdapter) -> Vec<BluetoothDevice> {
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let devices = adapter.get_devices().unwrap_or(vec!());
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for device in &devices {
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if let Ok(address) = device.get_address() {
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if !self.address_to_id.contains_key(&address) {
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let generated_id = self.generate_device_id();
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self.address_to_id.insert(address, generated_id.clone());
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self.cached_devices.insert(generated_id.clone(), device.clone());
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self.allowed_services.insert(generated_id, HashSet::new());
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}
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}
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}
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self.cached_devices.iter().map(|(_, d)| d.clone()).collect()
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}
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fn get_device(&mut self, adapter: &mut BluetoothAdapter, device_id: &str) -> Option<&BluetoothDevice> {
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return_if_cached!(self.cached_devices, device_id);
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self.get_and_cache_devices(adapter);
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return_if_cached!(self.cached_devices, device_id);
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None
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}
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#[cfg(target_os = "linux")]
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fn select_device(&mut self, devices: Vec<BluetoothDevice>, adapter: &BluetoothAdapter) -> Option<String> {
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if is_mock_adapter(adapter) {
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for device in devices {
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if let Ok(address) = device.get_address() {
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return Some(address);
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}
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}
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return None;
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}
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let mut dialog_rows: Vec<String> = vec!();
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for device in devices {
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dialog_rows.extend_from_slice(&[device.get_address().unwrap_or("".to_string()),
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device.get_name().unwrap_or("".to_string())]);
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}
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let dialog_rows: Vec<&str> = dialog_rows.iter()
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.map(|s| s.as_ref())
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.collect();
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let dialog_rows: &[&str] = dialog_rows.as_slice();
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if let Some(device) = tinyfiledialogs::list_dialog(DIALOG_TITLE,
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&[DIALOG_COLUMN_ID, DIALOG_COLUMN_NAME],
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Some(dialog_rows)) {
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// The device string format will be "Address|Name". We need the first part of it.
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return device.split("|").next().map(|s| s.to_string());
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}
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None
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}
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#[cfg(not(target_os = "linux"))]
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fn select_device(&mut self, devices: Vec<BluetoothDevice>, _adapter: &BluetoothAdapter) -> Option<String> {
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for device in devices {
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if let Ok(address) = device.get_address() {
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return Some(address);
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}
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}
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None
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}
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fn generate_device_id(&mut self) -> String {
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let mut device_id;
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let mut rng = servo_rand::thread_rng();
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loop {
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device_id = rng.gen::<u32>().to_string();
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if !self.cached_devices.contains_key(&device_id) {
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break;
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}
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}
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device_id
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}
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fn device_from_service_id(&self, service_id: &str) -> Option<BluetoothDevice> {
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let device_id = match self.service_to_device.get(service_id) {
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Some(id) => id,
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None => return None,
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};
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match self.cached_devices.get(device_id) {
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Some(d) => Some(d.clone()),
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None => None,
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}
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}
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fn device_is_cached(&self, device_id: &str) -> bool {
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self.cached_devices.contains_key(device_id) && self.address_to_id.values().any(|v| v == device_id)
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}
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fn device_matches_filter(&mut self,
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device_id: &str,
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filters: &BluetoothScanfilterSequence)
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-> BluetoothResult<bool> {
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let mut adapter = try!(self.get_adapter());
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match self.get_device(&mut adapter, device_id) {
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Some(ref device) => Ok(matches_filters(device, filters)),
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None => Ok(false),
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}
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}
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// Service
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fn get_and_cache_gatt_services(&mut self,
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adapter: &mut BluetoothAdapter,
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device_id: &str)
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-> Vec<BluetoothGATTService> {
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let mut services = match self.get_device(adapter, device_id) {
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Some(d) => d.get_gatt_services().unwrap_or(vec!()),
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None => vec!(),
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};
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services.retain(|s| !uuid_is_blocklisted(&s.get_uuid().unwrap_or(String::new()), Blocklist::All) &&
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self.allowed_services
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.get(device_id)
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.map_or(false, |uuids| uuids.contains(&s.get_uuid().unwrap_or(String::new()))));
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for service in &services {
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self.cached_services.insert(service.get_id(), service.clone());
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self.service_to_device.insert(service.get_id(), device_id.to_owned());
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}
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services
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}
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fn get_gatt_service(&mut self, adapter: &mut BluetoothAdapter, service_id: &str) -> Option<&BluetoothGATTService> {
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return_if_cached!(self.cached_services, service_id);
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let device_id = match self.service_to_device.get(service_id) {
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Some(d) => d.clone(),
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None => return None,
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};
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self.get_and_cache_gatt_services(adapter, &device_id);
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return_if_cached!(self.cached_services, service_id);
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None
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}
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fn service_is_cached(&self, service_id: &str) -> bool {
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self.cached_services.contains_key(service_id) && self.service_to_device.contains_key(service_id)
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}
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// Characteristic
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fn get_and_cache_gatt_characteristics(&mut self,
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adapter: &mut BluetoothAdapter,
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service_id: &str)
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-> Vec<BluetoothGATTCharacteristic> {
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let mut characteristics = match self.get_gatt_service(adapter, service_id) {
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Some(s) => s.get_gatt_characteristics().unwrap_or(vec!()),
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None => vec!(),
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};
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characteristics.retain(|c| !uuid_is_blocklisted(&c.get_uuid().unwrap_or(String::new()), Blocklist::All));
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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_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
|
|
}
|
|
|
|
fn characteristic_is_cached(&self, characteristic_id: &str) -> bool {
|
|
self.cached_characteristics.contains_key(characteristic_id) &&
|
|
self.characteristic_to_service.contains_key(characteristic_id)
|
|
}
|
|
|
|
// Descriptor
|
|
|
|
fn get_and_cache_gatt_descriptors(&mut self,
|
|
adapter: &mut BluetoothAdapter,
|
|
characteristic_id: &str)
|
|
-> Vec<BluetoothGATTDescriptor> {
|
|
let mut descriptors = match self.get_gatt_characteristic(adapter, characteristic_id) {
|
|
Some(c) => c.get_gatt_descriptors().unwrap_or(vec!()),
|
|
None => vec!(),
|
|
};
|
|
|
|
descriptors.retain(|d| !uuid_is_blocklisted(&d.get_uuid().unwrap_or(String::new()), Blocklist::All));
|
|
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
|
|
}
|
|
|
|
// Methods
|
|
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#request-bluetooth-devices
|
|
fn request_device(&mut self,
|
|
options: RequestDeviceoptions)
|
|
-> BluetoothResponseResult {
|
|
// Step 6.
|
|
let mut adapter = try!(self.get_adapter());
|
|
|
|
// Step 7.
|
|
// Note: There are no requiredServiceUUIDS, we scan for all devices.
|
|
if let Ok(ref session) = adapter.create_discovery_session() {
|
|
if session.start_discovery().is_ok() {
|
|
if !is_mock_adapter(&adapter) {
|
|
thread::sleep(Duration::from_millis(DISCOVERY_TIMEOUT_MS));
|
|
}
|
|
}
|
|
let _ = session.stop_discovery();
|
|
}
|
|
|
|
let mut matched_devices = self.get_and_cache_devices(&mut adapter);
|
|
|
|
// Step 8.
|
|
if !options.is_accepting_all_devices() {
|
|
matched_devices = matched_devices.into_iter()
|
|
.filter(|d| matches_filters(d, options.get_filters()))
|
|
.collect();
|
|
}
|
|
|
|
// Step 9.
|
|
if let Some(address) = self.select_device(matched_devices, &adapter) {
|
|
let device_id = match self.address_to_id.get(&address) {
|
|
Some(id) => id.clone(),
|
|
None => return 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 = BluetoothDeviceMsg {
|
|
id: device_id,
|
|
name: device.get_name().ok(),
|
|
};
|
|
return Ok(BluetoothResponse::RequestDevice(message));
|
|
}
|
|
}
|
|
// Step 10.
|
|
return Err(BluetoothError::NotFound);
|
|
// Step 12: Missing, because it is optional.
|
|
}
|
|
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattserver-connect
|
|
fn gatt_server_connect(&mut self, device_id: String) -> BluetoothResponseResult {
|
|
// Step 2.
|
|
if !self.device_is_cached(&device_id) {
|
|
return Err(BluetoothError::Network);
|
|
}
|
|
let mut adapter = try!(self.get_adapter());
|
|
|
|
// Step 5.1.1.
|
|
match self.get_device(&mut adapter, &device_id) {
|
|
Some(d) => {
|
|
if d.is_connected().unwrap_or(false) {
|
|
return Ok(BluetoothResponse::GATTServerConnect(true));
|
|
}
|
|
let _ = d.connect();
|
|
for _ in 0..MAXIMUM_TRANSACTION_TIME {
|
|
match d.is_connected().unwrap_or(false) {
|
|
true => return Ok(BluetoothResponse::GATTServerConnect(true)),
|
|
false => {
|
|
if is_mock_adapter(&adapter) {
|
|
break;
|
|
}
|
|
thread::sleep(Duration::from_millis(CONNECTION_TIMEOUT_MS));
|
|
},
|
|
}
|
|
// TODO: Step 5.1.4: Use the exchange MTU procedure.
|
|
}
|
|
// Step 5.1.3.
|
|
return Err(BluetoothError::Network);
|
|
},
|
|
None => return Err(BluetoothError::NotFound),
|
|
}
|
|
}
|
|
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattserver-disconnect
|
|
fn gatt_server_disconnect(&mut self, device_id: String) -> BluetoothResult<()> {
|
|
let mut adapter = try!(self.get_adapter());
|
|
match self.get_device(&mut adapter, &device_id) {
|
|
Some(d) => {
|
|
// Step 2.
|
|
if !d.is_connected().unwrap_or(true) {
|
|
return Ok(());
|
|
}
|
|
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 Ok(()),
|
|
}
|
|
}
|
|
return Err(BluetoothError::Network);
|
|
},
|
|
None => return Err(BluetoothError::NotFound),
|
|
}
|
|
}
|
|
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#getgattchildren
|
|
fn get_gatt_children(&mut self,
|
|
id: String,
|
|
uuid: Option<String>,
|
|
single: bool,
|
|
child_type: GATTType)
|
|
-> BluetoothResponseResult {
|
|
let mut adapter = try!(self.get_adapter());
|
|
match child_type {
|
|
GATTType::PrimaryService => {
|
|
// Step 5.
|
|
if !self.device_is_cached(&id) {
|
|
return Err(BluetoothError::InvalidState);
|
|
}
|
|
// Step 6.
|
|
if let Some(ref uuid) = uuid {
|
|
if !self.allowed_services.get(&id).map_or(false, |s| s.contains(uuid)) {
|
|
return Err(BluetoothError::Security);
|
|
}
|
|
}
|
|
let mut services = self.get_and_cache_gatt_services(&mut adapter, &id);
|
|
if let Some(uuid) = uuid {
|
|
services.retain(|ref e| e.get_uuid().unwrap_or(String::new()) == uuid);
|
|
}
|
|
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(),
|
|
}
|
|
);
|
|
}
|
|
}
|
|
}
|
|
// Step 7.
|
|
if services_vec.is_empty() {
|
|
return Err(BluetoothError::NotFound);
|
|
}
|
|
|
|
return Ok(BluetoothResponse::GetPrimaryServices(services_vec, single));
|
|
},
|
|
GATTType::Characteristic => {
|
|
// Step 5.
|
|
if !self.service_is_cached(&id) {
|
|
return Err(BluetoothError::InvalidState);
|
|
}
|
|
// Step 6.
|
|
let mut characteristics = self.get_and_cache_gatt_characteristics(&mut adapter, &id);
|
|
if let Some(uuid) = uuid {
|
|
characteristics.retain(|ref e| e.get_uuid().unwrap_or(String::new()) == uuid);
|
|
}
|
|
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),
|
|
}
|
|
);
|
|
}
|
|
}
|
|
|
|
// Step 7.
|
|
if characteristics_vec.is_empty() {
|
|
return Err(BluetoothError::NotFound);
|
|
}
|
|
|
|
return Ok(BluetoothResponse::GetCharacteristics(characteristics_vec, single));
|
|
},
|
|
GATTType::IncludedService => {
|
|
// Step 5.
|
|
if !self.service_is_cached(&id) {
|
|
return Err(BluetoothError::InvalidState);
|
|
}
|
|
// Step 6.
|
|
let device = match self.device_from_service_id(&id) {
|
|
Some(device) => device,
|
|
None => return Err(BluetoothError::NotFound),
|
|
};
|
|
let primary_service = match self.get_gatt_service(&mut adapter, &id) {
|
|
Some(s) => s,
|
|
None => return Err(BluetoothError::NotFound),
|
|
};
|
|
let services = primary_service.get_includes(device).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);
|
|
}
|
|
services_vec.retain(|s| !uuid_is_blocklisted(&s.uuid, Blocklist::All));
|
|
|
|
// Step 7.
|
|
if services_vec.is_empty() {
|
|
return Err(BluetoothError::NotFound);
|
|
}
|
|
|
|
return Ok(BluetoothResponse::GetIncludedServices(services_vec, single));
|
|
},
|
|
GATTType::Descriptor => {
|
|
// Step 5.
|
|
if !self.characteristic_is_cached(&id) {
|
|
return Err(BluetoothError::InvalidState);
|
|
}
|
|
// Step 6.
|
|
let mut descriptors = self.get_and_cache_gatt_descriptors(&mut adapter, &id);
|
|
if let Some(uuid) = uuid {
|
|
descriptors.retain(|ref e| e.get_uuid().unwrap_or(String::new()) == uuid);
|
|
}
|
|
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(),
|
|
}
|
|
);
|
|
}
|
|
}
|
|
|
|
// Step 7.
|
|
if descriptors_vec.is_empty() {
|
|
return Err(BluetoothError::NotFound);
|
|
}
|
|
return Ok(BluetoothResponse::GetDescriptors(descriptors_vec, single));
|
|
},
|
|
}
|
|
}
|
|
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-readvalue
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattdescriptor-readvalue
|
|
fn read_value(&mut self, id: String) -> BluetoothResponseResult {
|
|
// (Characteristic) Step 5.2: Missing because it is optional.
|
|
// (Descriptor) Step 5.1: Missing because it is optional.
|
|
let mut adapter = try!(self.get_adapter());
|
|
|
|
// (Characteristic) Step 5.3.
|
|
let mut value = self.get_gatt_characteristic(&mut adapter, &id)
|
|
.map(|c| c.read_value().unwrap_or(vec![]));
|
|
|
|
// (Characteristic) TODO: Step 5.4: Handle all the errors returned from the read_value call.
|
|
|
|
// (Descriptor) Step 5.2.
|
|
if value.is_none() {
|
|
value = self.get_gatt_descriptor(&mut adapter, &id)
|
|
.map(|d| d.read_value().unwrap_or(vec![]));
|
|
}
|
|
|
|
// (Descriptor) TODO: Step 5.3: Handle all the errors returned from the read_value call.
|
|
|
|
match value {
|
|
// (Characteristic) Step 5.5.4.
|
|
// (Descriptor) Step 5.4.3.
|
|
Some(v) => return Ok(BluetoothResponse::ReadValue(v)),
|
|
|
|
// (Characteristic) Step 4.
|
|
// (Descriptor) Step 4.
|
|
None => return Err(BluetoothError::InvalidState),
|
|
}
|
|
}
|
|
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-writevalue
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattdescriptor-writevalue
|
|
fn write_value(&mut self, id: String, value: Vec<u8>) -> BluetoothResponseResult {
|
|
// (Characteristic) Step 7.2: Missing because it is optional.
|
|
// (Descriptor) Step 7.1: Missing because it is optional.
|
|
let mut adapter = try!(self.get_adapter());
|
|
|
|
// (Characteristic) Step 7.3.
|
|
let mut result = self.get_gatt_characteristic(&mut adapter, &id)
|
|
.map(|c| c.write_value(value.clone()));
|
|
|
|
// (Characteristic) TODO: Step 7.4: Handle all the errors returned from the write_value call.
|
|
|
|
// (Descriptor) Step 7.2.
|
|
if result.is_none() {
|
|
result = self.get_gatt_descriptor(&mut adapter, &id)
|
|
.map(|d| d.write_value(value.clone()));
|
|
}
|
|
|
|
// (Descriptor) TODO: Step 7.3: Handle all the errors returned from the write_value call.
|
|
|
|
match result {
|
|
Some(v) => match v {
|
|
// (Characteristic) Step 7.5.3.
|
|
// (Descriptor) Step 7.4.3.
|
|
Ok(_) => return Ok(BluetoothResponse::WriteValue(value)),
|
|
|
|
// (Characteristic) Step 7.1.
|
|
Err(_) => return Err(BluetoothError::NotSupported),
|
|
},
|
|
|
|
// (Characteristic) Step 6.
|
|
// (Descriptor) Step 6.
|
|
None => return Err(BluetoothError::InvalidState),
|
|
}
|
|
}
|
|
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-startnotifications
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-stopnotifications
|
|
fn enable_notification(&mut self, id: String, enable: bool) -> BluetoothResponseResult {
|
|
// (StartNotifications) Step 3 - 4.
|
|
// (StopNotifications) Step 1 - 2.
|
|
if !self.characteristic_is_cached(&id) {
|
|
return Err(BluetoothError::InvalidState);
|
|
}
|
|
|
|
// (StartNotification) TODO: Step 7: Missing because it is optional.
|
|
let mut adapter = try!(self.get_adapter());
|
|
match self.get_gatt_characteristic(&mut adapter, &id) {
|
|
Some(c) => {
|
|
let result = match enable {
|
|
// (StartNotification) Step 8.
|
|
// TODO: Handle all the errors returned from the start_notify call.
|
|
true => c.start_notify(),
|
|
|
|
// (StopNotification) Step 4.
|
|
false => c.stop_notify(),
|
|
};
|
|
match result {
|
|
// (StartNotification) Step 11.
|
|
// (StopNotification) Step 5.
|
|
Ok(_) => return Ok(BluetoothResponse::EnableNotification(())),
|
|
|
|
// (StartNotification) Step 5.
|
|
Err(_) => return Err(BluetoothError::NotSupported),
|
|
}
|
|
},
|
|
// (StartNotification) Step 4.
|
|
None => return Err(BluetoothError::InvalidState),
|
|
}
|
|
}
|
|
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothdevice-watchadvertisements
|
|
fn watch_advertisements(&mut self, _device_id: String) -> BluetoothResponseResult {
|
|
// Step 2.
|
|
// TODO: Implement this when supported in lower level
|
|
return Err(BluetoothError::NotSupported);
|
|
}
|
|
|
|
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetooth-getavailability
|
|
fn get_availability(&mut self) -> BluetoothResponseResult {
|
|
Ok(BluetoothResponse::GetAvailability(self.get_adapter().is_ok()))
|
|
}
|
|
}
|