Add support for T8506 (C220) wifi door lock with keypad

[justinlindh]

This PR adds support for the T8506 (C220) door lock with wifi and keypad. This is my first contribution to this repository, so please let me know if I missed anything (are there tests in this repo?) and I'll be happy to update.

Tested locally using client/server ws wrapper. Device properties:

{
  type: 'result',
  success: true,
  messageId: 'get_properties',
  result: {
    serialNumber: 'T8506<redacted>',
    properties: {
      name: 'Front Door',
      model: 'T8506',
      serialNumber: 'T8506<redacted>',
      hardwareVersion: 'V2',
      softwareVersion: '1.1.1.6',
      type: 184,
      stationSerialNumber: 'T8506<redacted>',
      battery: 100,
      lockStatus: 4,
      autoLock: true,
      autoLockTimer: 60,
      autoLockSchedule: false,
      autoLockScheduleStartTime: '23:00',
      autoLockScheduleEndTime: '6:00',
      wrongTryAttempts: 6,
      wrongTryLockdownTime: 300,
      sound: 2
    }
  }
}

Addresses #356

[justinlindh]

Looks like lockStatus isn't updating on external state change and I'm not entirely sure of why yet. I'll continue to debug, but should probably move this into draft until resolved.

[justinlindh]

OK; resolved the failed push notification updates. It's not registering the lock command, though; neither through the device.lock command or device.set_property <sn> lock true, so I'll figure that out.

[justinlindh]

I haven't had much time to really drill into this, but in case anybody is interested, I'm blocked on figuring out the Eufy public key request/response at the moment. The API returns (converted to hex, trailing bytes truncated) this:

bfef 22bd bfef efbd bdbf ef28 bdbf ef54 bdbf ef49 bdbf bfef ...

This fails in both getAdvancedLockKey and getLockV12P2PCommand with Error [ERR_CRYPTO_ECDH_INVALID_PUBLIC_KEY]: Public key is not valid for specified curve

I'll keep playing with this as time allows, but if anybody has any clues on , please let me know.

[kebel87]

Did you end up finding a fix? I have the same issue 😔

[justinlindh]

Apologies, but I haven't had time to look into it further. I'll try to take a look this week and see if I can get anything further figured out.

[bropat]

Added support for this device.

Todo:

• Add user management support (add, delete, modify, get)