// Body returns the json body for an event response as bytes.
func Body(a *accessory.Accessory, c *characteristic.Characteristic) (*bytes.Buffer, error) {
chars := data.NewCharacteristics()
char := data.Characteristic{AccessoryID: a.GetID(), ID: c.GetID(), Value: c.GetValue()}
chars.AddCharacteristic(char)
result, err := json.Marshal(chars)
if err != nil {
return nil, err
}
var b bytes.Buffer
b.Write(result)
return &b, err
}
// NewIPTransport creates a transport to provide accessories over IP.
// The pairing is secured using a 8-numbers pin.
// If more than one accessory is provided, the first becomes a bridge in HomeKit.
// It's fine when the bridge has no explicit services.
//
// All accessory specific data (crypto keys, ids) is stored in a folder named after the first accessory.
// So changing the order of the accessories or renaming the first accessory makes the stored
// data inaccessible to the tranport. In this case new crypto keys are created and the accessory
// appears as a new one to clients.
func NewIPTransport(pin string, pth string, a *accessory.Accessory, as ...*accessory.Accessory) (Transport, error) {
// Find transport name which is visible in mDNS
name := a.Name()
if len(name) == 0 {
log.Fatal("Invalid empty name for first accessory")
}
hapPin, err := NewPin(pin)
if err != nil {
return nil, err
}
storage, err := util.NewFileStorage(path.Join(pth, name))
if err != nil {
return nil, err
}
// Find transport uuid which appears as "id" txt record in mDNS and
// must be unique and stay the same over time
uuid := transportUUIDInStorage(storage)
database := db.NewDatabaseWithStorage(storage)
device, err := netio.NewSecuredDevice(uuid, hapPin, database)
t := &ipTransport{
database: database,
name: name,
device: device,
container: container.NewContainer(),
mutex: &sync.Mutex{},
context: netio.NewContextForSecuredDevice(device),
emitter: event.NewEmitter(),
}
t.addAccessory(a)
for _, a := range as {
t.addAccessory(a)
}
t.emitter.AddListener(t)
return t, err
}
// NewIPTransport creates a transport to provide accessories over IP.
//
// The IP transports stores the crypto keys inside a database, which
// is by default inside a folder at the current working directory.
// The folder is named exactly as the accessory name.
//
// The transports can contain more than one accessory. If this is the
// case, the first accessory acts as the HomeKit bridge.
//
// *Important:* Changing the name of the accessory, or letting multiple
// transports store the data inside the same database lead to
// unexpected behavior – don't do that.
//
// The transport is secured with an 8-digit pin, which must be entered
// by an iOS client to successfully pair with the accessory. If the
// provided transport config does not specify any pin, 00102003 is used.
func NewIPTransport(config Config, a *accessory.Accessory, as ...*accessory.Accessory) (Transport, error) {
// Find transport name which is visible in mDNS
name := a.Name()
if len(name) == 0 {
log.Fatal("Invalid empty name for first accessory")
}
default_config := Config{
StoragePath: name,
Pin: "00102003",
Port: "",
}
if dir := config.StoragePath; len(dir) > 0 {
default_config.StoragePath = dir
}
if pin := config.Pin; len(pin) > 0 {
default_config.Pin = pin
}
if port := config.Port; len(port) > 0 {
default_config.Port = ":" + port
}
storage, err := util.NewFileStorage(default_config.StoragePath)
if err != nil {
return nil, err
}
// Find transport uuid which appears as "id" txt record in mDNS and
// must be unique and stay the same over time
uuid := transportUUIDInStorage(storage)
database := db.NewDatabaseWithStorage(storage)
hap_pin, err := NewPin(default_config.Pin)
if err != nil {
return nil, err
}
device, err := netio.NewSecuredDevice(uuid, hap_pin, database)
t := &ipTransport{
database: database,
name: name,
device: device,
config: default_config,
container: container.NewContainer(),
mutex: &sync.Mutex{},
context: netio.NewContextForSecuredDevice(device),
emitter: event.NewEmitter(),
}
t.addAccessory(a)
for _, a := range as {
t.addAccessory(a)
}
t.emitter.AddListener(t)
return t, err
}
// AddAccessory adds an accessory to the container.
// This method ensures that the accessory ids are valid and unique withing the container.
func (m *Container) AddAccessory(a *accessory.Accessory) {
a.SetID(m.idCount)
m.idCount++
m.Accessories = append(m.Accessories, a)
}