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/* 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 bluetooth_traits::BluetoothMethodMsg;
use bluetooth_traits::blacklist::{Blacklist, uuid_is_blacklisted};
use dom::bindings::cell::DOMRefCell;
use dom::bindings::codegen::Bindings::BluetoothCharacteristicPropertiesBinding::
BluetoothCharacteristicPropertiesMethods;
use dom::bindings::codegen::Bindings::BluetoothDeviceBinding::BluetoothDeviceMethods;
use dom::bindings::codegen::Bindings::BluetoothRemoteGATTCharacteristicBinding;
use dom::bindings::codegen::Bindings::BluetoothRemoteGATTCharacteristicBinding::
BluetoothRemoteGATTCharacteristicMethods;
use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServerBinding::BluetoothRemoteGATTServerMethods;
use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServiceBinding::BluetoothRemoteGATTServiceMethods;
use dom::bindings::error::{ErrorResult, Fallible};
use dom::bindings::error::Error::{self, InvalidModification, Network, NotSupported, Security};
use dom::bindings::js::{JS, MutHeap, Root};
use dom::bindings::reflector::{Reflectable, Reflector, reflect_dom_object};
use dom::bindings::str::{ByteString, DOMString};
use dom::bluetooth::result_to_promise;
use dom::bluetoothcharacteristicproperties::BluetoothCharacteristicProperties;
use dom::bluetoothremotegattdescriptor::BluetoothRemoteGATTDescriptor;
use dom::bluetoothremotegattservice::BluetoothRemoteGATTService;
use dom::bluetoothuuid::{BluetoothDescriptorUUID, BluetoothUUID};
use dom::globalscope::GlobalScope;
use dom::promise::Promise;
use ipc_channel::ipc::{self, IpcSender};
use std::rc::Rc;
// Maximum length of an attribute value.
// https://www.bluetooth.org/DocMan/handlers/DownloadDoc.ashx?doc_id=286439 (Vol. 3, page 2169)
pub const MAXIMUM_ATTRIBUTE_LENGTH: usize = 512;
// https://webbluetoothcg.github.io/web-bluetooth/#bluetoothremotegattcharacteristic
#[dom_struct]
pub struct BluetoothRemoteGATTCharacteristic {
reflector_: Reflector,
service: MutHeap<JS<BluetoothRemoteGATTService>>,
uuid: DOMString,
properties: MutHeap<JS<BluetoothCharacteristicProperties>>,
value: DOMRefCell<Option<ByteString>>,
instance_id: String,
}
impl BluetoothRemoteGATTCharacteristic {
pub fn new_inherited(service: &BluetoothRemoteGATTService,
uuid: DOMString,
properties: &BluetoothCharacteristicProperties,
instance_id: String)
-> BluetoothRemoteGATTCharacteristic {
BluetoothRemoteGATTCharacteristic {
reflector_: Reflector::new(),
service: MutHeap::new(service),
uuid: uuid,
properties: MutHeap::new(properties),
value: DOMRefCell::new(None),
instance_id: instance_id,
}
}
pub fn new(global: &GlobalScope,
service: &BluetoothRemoteGATTService,
uuid: DOMString,
properties: &BluetoothCharacteristicProperties,
instanceID: String)
-> Root<BluetoothRemoteGATTCharacteristic> {
reflect_dom_object(box BluetoothRemoteGATTCharacteristic::new_inherited(service,
uuid,
properties,
instanceID),
global,
BluetoothRemoteGATTCharacteristicBinding::Wrap)
}
fn get_bluetooth_thread(&self) -> IpcSender<BluetoothMethodMsg> {
self.global().as_window().bluetooth_thread()
}
fn get_instance_id(&self) -> String {
self.instance_id.clone()
}
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-getdescriptor
fn get_descriptor(&self, descriptor: BluetoothDescriptorUUID) -> Fallible<Root<BluetoothRemoteGATTDescriptor>> {
let uuid = try!(BluetoothUUID::descriptor(descriptor)).to_string();
if uuid_is_blacklisted(uuid.as_ref(), Blacklist::All) {
return Err(Security)
}
if !self.Service().Device().Gatt().Connected() {
return Err(Network)
}
let (sender, receiver) = ipc::channel().unwrap();
self.get_bluetooth_thread().send(
BluetoothMethodMsg::GetDescriptor(self.get_instance_id(), uuid, sender)).unwrap();
let descriptor = receiver.recv().unwrap();
match descriptor {
Ok(descriptor) => {
let context = self.service.get().get_device().get_context();
let mut descriptor_map = context.get_descriptor_map().borrow_mut();
if let Some(existing_descriptor) = descriptor_map.get(&descriptor.instance_id) {
return Ok(existing_descriptor.get());
}
let bt_descriptor = BluetoothRemoteGATTDescriptor::new(&self.global(),
self,
DOMString::from(descriptor.uuid),
descriptor.instance_id.clone());
descriptor_map.insert(descriptor.instance_id, MutHeap::new(&bt_descriptor));
Ok(bt_descriptor)
},
Err(error) => {
Err(Error::from(error))
},
}
}
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-getdescriptors
fn get_descriptors(&self,
descriptor: Option<BluetoothDescriptorUUID>)
-> Fallible<Vec<Root<BluetoothRemoteGATTDescriptor>>> {
let mut uuid: Option<String> = None;
if let Some(d) = descriptor {
uuid = Some(try!(BluetoothUUID::descriptor(d)).to_string());
if let Some(ref uuid) = uuid {
if uuid_is_blacklisted(uuid.as_ref(), Blacklist::All) {
return Err(Security)
}
}
};
if !self.Service().Device().Gatt().Connected() {
return Err(Network)
}
let mut descriptors = vec!();
let (sender, receiver) = ipc::channel().unwrap();
self.get_bluetooth_thread().send(
BluetoothMethodMsg::GetDescriptors(self.get_instance_id(), uuid, sender)).unwrap();
let descriptors_vec = receiver.recv().unwrap();
match descriptors_vec {
Ok(descriptor_vec) => {
let context = self.service.get().get_device().get_context();
let mut descriptor_map = context.get_descriptor_map().borrow_mut();
for descriptor in descriptor_vec {
let bt_descriptor = match descriptor_map.get(&descriptor.instance_id) {
Some(existing_descriptor) => existing_descriptor.get(),
None => {
BluetoothRemoteGATTDescriptor::new(&self.global(),
self,
DOMString::from(descriptor.uuid),
descriptor.instance_id.clone())
},
};
if !descriptor_map.contains_key(&descriptor.instance_id) {
descriptor_map.insert(descriptor.instance_id, MutHeap::new(&bt_descriptor));
}
descriptors.push(bt_descriptor);
}
Ok(descriptors)
},
Err(error) => {
Err(Error::from(error))
},
}
}
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-readvalue
fn read_value(&self) -> Fallible<ByteString> {
if uuid_is_blacklisted(self.uuid.as_ref(), Blacklist::Reads) {
return Err(Security)
}
let (sender, receiver) = ipc::channel().unwrap();
if !self.Service().Device().Gatt().Connected() {
return Err(Network)
}
if !self.Properties().Read() {
return Err(NotSupported)
}
self.get_bluetooth_thread().send(
BluetoothMethodMsg::ReadValue(self.get_instance_id(), sender)).unwrap();
let result = receiver.recv().unwrap();
let value = match result {
Ok(val) => {
ByteString::new(val)
},
Err(error) => {
return Err(Error::from(error))
},
};
*self.value.borrow_mut() = Some(value.clone());
Ok(value)
}
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-writevalue
fn write_value(&self, value: Vec<u8>) -> ErrorResult {
if uuid_is_blacklisted(self.uuid.as_ref(), Blacklist::Writes) {
return Err(Security)
}
if value.len() > MAXIMUM_ATTRIBUTE_LENGTH {
return Err(InvalidModification)
}
if !self.Service().Device().Gatt().Connected() {
return Err(Network)
}
if !(self.Properties().Write() ||
self.Properties().WriteWithoutResponse() ||
self.Properties().AuthenticatedSignedWrites()) {
return Err(NotSupported)
}
let (sender, receiver) = ipc::channel().unwrap();
self.get_bluetooth_thread().send(
BluetoothMethodMsg::WriteValue(self.get_instance_id(), value.clone(), sender)).unwrap();
let result = receiver.recv().unwrap();
match result {
Ok(_) => Ok(*self.value.borrow_mut() = Some(ByteString::new(value))),
Err(error) => {
Err(Error::from(error))
},
}
}
}
impl BluetoothRemoteGATTCharacteristicMethods for BluetoothRemoteGATTCharacteristic {
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-properties
fn Properties(&self) -> Root<BluetoothCharacteristicProperties> {
self.properties.get()
}
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-service
fn Service(&self) -> Root<BluetoothRemoteGATTService> {
self.service.get()
}
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-uuid
fn Uuid(&self) -> DOMString {
self.uuid.clone()
}
#[allow(unrooted_must_root)]
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-getdescriptor
fn GetDescriptor(&self, descriptor: BluetoothDescriptorUUID) -> Rc<Promise> {
result_to_promise(&self.global(), self.get_descriptor(descriptor))
}
#[allow(unrooted_must_root)]
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-getdescriptors
fn GetDescriptors(&self,
descriptor: Option<BluetoothDescriptorUUID>)
-> Rc<Promise> {
result_to_promise(&self.global(), self.get_descriptors(descriptor))
}
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-value
fn GetValue(&self) -> Option<ByteString> {
self.value.borrow().clone()
}
#[allow(unrooted_must_root)]
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-readvalue
fn ReadValue(&self) -> Rc<Promise> {
result_to_promise(&self.global(), self.read_value())
}
#[allow(unrooted_must_root)]
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-writevalue
fn WriteValue(&self, value: Vec<u8>) -> Rc<Promise> {
result_to_promise(&self.global(), self.write_value(value))
}
}
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