func (d *device) AdvertiseIBeaconData(data []byte) error {
var utsname xpc.Utsname
xpc.Uname(&utsname)
var rsp xpc.Dict
if utsname.Release >= "14." {
l := len(data)
buf := bytes.NewBuffer([]byte{byte(l + 5), 0xFF, 0x4C, 0x00, 0x02, byte(l)})
buf.Write(data)
rsp = d.sendReq(8, xpc.Dict{"kCBAdvDataAppleMfgData": buf.Bytes()})
} else {
rsp = d.sendReq(8, xpc.Dict{"kCBAdvDataAppleBeaconKey": data})
}
if res := rsp.MustGetInt("kCBMsgArgResult"); res != 0 {
return errors.New("FIXME: Advertise error")
}
return nil
}
// process device events and asynchronous errors
// (implements XpcEventHandler)
func (d *device) HandleXpcEvent(event xpc.Dict, err error) {
if err != nil {
log.Println("error:", err)
return
}
id := event.MustGetInt("kCBMsgId")
args := event.MustGetDict("kCBMsgArgs")
//log.Printf(">> %d, %v", id, args)
switch id {
case // device event
6, // StateChanged
16, // AdvertisingStarted
17, // AdvertisingStopped
18: // ServiceAdded
d.rspc <- message{id: id, args: args}
case
19, // ReadRequest
20, // WriteRequest
21, // Subscribe
22, // Unubscribe
23: // Confirmation
d.respondToRequest(id, args)
case peripheralDiscovered:
xa := args.MustGetDict("kCBMsgArgAdvertisementData")
if len(xa) == 0 {
return
}
u := UUID{args.MustGetUUID("kCBMsgArgDeviceUUID")}
a := &Advertisement{
LocalName: xa.GetString("kCBAdvDataLocalName", args.GetString("kCBMsgArgName", "")),
TxPowerLevel: xa.GetInt("kCBAdvDataTxPowerLevel", 0),
ManufacturerData: xa.GetBytes("kCBAdvDataManufacturerData", nil),
}
rssi := args.MustGetInt("kCBMsgArgRssi")
if xu, ok := xa["kCBAdvDataServiceUUIDs"]; ok {
for _, xs := range xu.(xpc.Array) {
s := UUID{reverse(xs.([]byte))}
a.Services = append(a.Services, s)
}
}
if xsds, ok := xa["kCBAdvDataServiceData"]; ok {
xsd := xsds.(xpc.Array)
for i := 0; i < len(xsd); i += 2 {
sd := ServiceData{
UUID: UUID{xsd[i].([]byte)},
Data: xsd[i+1].([]byte),
}
a.ServiceData = append(a.ServiceData, sd)
}
}
if d.peripheralDiscovered != nil {
go d.peripheralDiscovered(&peripheral{id: xpc.UUID(u.b), d: d}, a, rssi)
}
case
peripheralConnected,
53: // Unhandled MTU by the original package once Blend is connected
u := UUID{args.MustGetUUID("kCBMsgArgDeviceUUID")}
p := &peripheral{
id: xpc.UUID(u.b),
d: d,
reqc: make(chan message),
rspc: make(chan message),
quitc: make(chan struct{}),
sub: newSubscriber(),
}
d.plistmu.Lock()
d.plist[u.String()] = p
d.plistmu.Unlock()
go p.loop()
if d.peripheralConnected != nil {
go d.peripheralConnected(p, nil)
}
case peripheralDisconnected:
u := UUID{args.MustGetUUID("kCBMsgArgDeviceUUID")}
d.plistmu.Lock()
p := d.plist[u.String()]
delete(d.plist, u.String())
d.plistmu.Unlock()
if d.peripheralDisconnected != nil {
d.peripheralDisconnected(p, nil) // TODO: Get Result as error?
}
close(p.quitc)
case // Peripheral events
rssiRead,
serviceDiscovered,
includedServicesDiscovered,
characteristicsDiscovered,
characteristicRead,
characteristicWritten,
notificationValueSet,
descriptorsDiscovered,
descriptorRead,
descriptorWritten:
u := UUID{args.MustGetUUID("kCBMsgArgDeviceUUID")}
d.plistmu.Lock()
p := d.plist[u.String()]
d.plistmu.Unlock()
p.rspc <- message{id: id, args: args}
default:
log.Printf("Unhandled event: %#v", event)
}
}
func (d *device) respondToRequest(id int, args xpc.Dict) {
switch id {
case 19: // ReadRequest
u := UUID{args.MustGetUUID("kCBMsgArgDeviceUUID")}
t := args.MustGetInt("kCBMsgArgTransactionID")
a := args.MustGetInt("kCBMsgArgAttributeID")
o := args.MustGetInt("kCBMsgArgOffset")
attr := d.attrs[a]
v := attr.value
if v == nil {
c := newCentral(d, u)
req := &ReadRequest{
Request: Request{Central: c},
Cap: int(c.mtu - 1),
Offset: o,
}
rsp := newResponseWriter(int(c.mtu - 1))
if c, ok := attr.pvt.(*Characteristic); ok {
c.rhandler.ServeRead(rsp, req)
v = rsp.bytes()
}
}
d.sendCmd(13, xpc.Dict{
"kCBMsgArgAttributeID": a,
"kCBMsgArgData": v,
"kCBMsgArgTransactionID": t,
"kCBMsgArgResult": 0,
})
case 20: // WriteRequest
u := UUID{args.MustGetUUID("kCBMsgArgDeviceUUID")}
t := args.MustGetInt("kCBMsgArgTransactionID")
a := 0
noRsp := false
xxws := args.MustGetArray("kCBMsgArgATTWrites")
for _, xxw := range xxws {
xw := xxw.(xpc.Dict)
if a == 0 {
a = xw.MustGetInt("kCBMsgArgAttributeID")
}
o := xw.MustGetInt("kCBMsgArgOffset")
i := xw.MustGetInt("kCBMsgArgIgnoreResponse")
b := xw.MustGetBytes("kCBMsgArgData")
_ = o
attr := d.attrs[a]
c := newCentral(d, u)
r := Request{Central: c}
attr.pvt.(*Characteristic).whandler.ServeWrite(r, b)
if i == 1 {
noRsp = true
}
}
if noRsp {
break
}
d.sendCmd(13, xpc.Dict{
"kCBMsgArgAttributeID": a,
"kCBMsgArgData": nil,
"kCBMsgArgTransactionID": t,
"kCBMsgArgResult": 0,
})
case 21: // subscribed
u := UUID{args.MustGetUUID("kCBMsgArgDeviceUUID")}
a := args.MustGetInt("kCBMsgArgAttributeID")
attr := d.attrs[a]
c := newCentral(d, u)
d.subscribers[u.String()] = c
c.startNotify(attr, c.mtu)
case 22: // unubscribed
u := UUID{args.MustGetUUID("kCBMsgArgDeviceUUID")}
a := args.MustGetInt("kCBMsgArgAttributeID")
attr := d.attrs[a]
if c := d.subscribers[u.String()]; c != nil {
c.stopNotify(attr)
}
case 23: // notificationSent
}
}