polaris kettle work
- polaris iot protocol implementation rewrite - fix temperature setting - fix power mode setting - sometimes responses don't come back, i think it's due to fragile nature of UDP. Need to implement message resending until response is received.
This commit is contained in:
Evgeny Zinoviev
parent
7e9f1eaba2
commit
ee09bc98ae
171
doc/polaris_pwk_1725cgld.md
Normal file
171
doc/polaris_pwk_1725cgld.md
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@ -0,0 +1,171 @@
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## Random research notes
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### Device features
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From `devices.json`:
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```
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"id": "cec1f5ed-be5e-4545-9ce9-e2d843032587",
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"vendor": "polaris",
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"type": 6,
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"class": "kettle",
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"name": "PWK 1725CGLD",
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"connectivity": [
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"wifi",
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"hotspot"
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],
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...
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"features": [
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"program",
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"temperature",
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"current_temperature",
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"schedule",
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"child_lock",
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"semi_recipe",
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"demo"
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],
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"temperature_units": "celsius",
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"limits": {
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"temperature": {
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"min": 30,
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"max": 100,
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"default": 40,
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"step": 5
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},
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"child_lock": {
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"min": 0,
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"max": 1,
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"default": 0,
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"step": 1
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}
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},
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```
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### Random notes
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All commands, from `com/polaris/iot/api/comments`:
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```
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$ grep -A1 -r "public byte getType()" .
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./CmdAccessControl.java: public byte getType() {
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./CmdAccessControl.java- return -123;
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--
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./CmdBattery.java: public byte getType() {
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./CmdBattery.java- return 27;
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--
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./CmdCurrentHumidity.java: public byte getType() {
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./CmdCurrentHumidity.java- return 19;
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--
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./CmdMultiStepCurrent.java: public byte getType() {
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./CmdMultiStepCurrent.java- return 21;
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--
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./CmdSmartMode.java: public byte getType() {
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./CmdSmartMode.java- return 40;
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--
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./CmdTimeStart.java: public byte getType() {
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./CmdTimeStart.java- return 0;
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--
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./CmdProgramData.java: public byte getType() {
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./CmdProgramData.java- return 66;
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--
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./CmdTank.java: public byte getType() {
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./CmdTank.java- return 31;
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--
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./CmdSpeed.java: public byte getType() {
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./CmdSpeed.java- return 15;
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--
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./CmdTargetHumidity.java: public byte getType() {
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./CmdTargetHumidity.java- return 18;
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--
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./CmdTargetTime.java: public byte getType() {
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./CmdTargetTime.java- return 3;
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--
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./CmdRecipeStep.java: public byte getType() {
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./CmdRecipeStep.java- return 5;
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--
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./CmdWarmStream.java: public byte getType() {
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./CmdWarmStream.java- return 25;
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--
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./CmdMapData.java: public byte getType() {
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./CmdMapData.java- return 10;
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--
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./CmdRecipeId.java: public byte getType() {
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./CmdRecipeId.java- return 4;
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--
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./CmdBacklight.java: public byte getType() {
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./CmdBacklight.java- return 28;
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--
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./CmdCurrentTemperature.java: public byte getType() {
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./CmdCurrentTemperature.java- return 20;
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--
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./CmdIonization.java: public byte getType() {
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./CmdIonization.java- return 24;
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--
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./CmdMapTarget.java: public byte getType() {
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./CmdMapTarget.java- return 67;
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--
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./CmdKeepWarm.java: public byte getType() {
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./CmdKeepWarm.java- return 16;
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--
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./CmdMultiStep.java: public byte getType() {
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./CmdMultiStep.java- return 14;
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--
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./CmdCleanArea.java: public byte getType() {
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./CmdCleanArea.java- return 36;
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--
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./CmdVolume.java: public byte getType() {
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./CmdVolume.java- return 9;
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--
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./CmdTargetTemperature.java: public byte getType() {
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./CmdTargetTemperature.java- return 2;
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--
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./CmdError.java: public byte getType() {
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./CmdError.java- return 7;
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--
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./CmdCleanTime.java: public byte getType() {
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./CmdCleanTime.java- return 35;
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--
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./CmdScheduleRemove.java: public byte getType() {
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./CmdScheduleRemove.java- return 65;
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--
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./CmdBatteryState.java: public byte getType() {
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./CmdBatteryState.java- return 29;
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--
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./CmdExpendables.java: public byte getType() {
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./CmdExpendables.java- return 34;
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--
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./CmdContour.java: public byte getType() {
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./CmdContour.java- return 68;
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--
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./CmdJoystick.java: public byte getType() {
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./CmdJoystick.java- return 8;
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--
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./CmdMode.java: public byte getType() {
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./CmdMode.java- return 1;
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--
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./CmdDelayStart.java: public byte getType() {
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./CmdDelayStart.java- return 13;
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--
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./CmdTargetId.java: public byte getType() {
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./CmdTargetId.java- return -112;
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--
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./CmdInternalLogs.java: public byte getType() {
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./CmdInternalLogs.java- return -16;
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--
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./CmdFindMe.java: public byte getType() {
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./CmdFindMe.java- return 69;
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--
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./CmdCustomCommand.java: public byte getType() {
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./CmdCustomCommand.java- return 0;
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--
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./CmdScheduleSet.java: public byte getType() {
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./CmdScheduleSet.java- return 64;
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--
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./CmdTotalTime.java: public byte getType() {
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./CmdTotalTime.java- return 26;
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--
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./CmdChildLock.java: public byte getType() {
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./CmdChildLock.java- return 30;
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```
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See also `com/syncleoiot/**/commands`.
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@ -19,3 +19,8 @@ scikit-image~=0.19.3
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# following can be installed from debian repositories
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# matplotlib~=3.5.0
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Pillow~=9.1.1
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# for polaris kettle protocol implementation
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cryptography~=37.0.2
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zeroconf~=0.38.7
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@ -1 +1,4 @@
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from .kettle import Kettle
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# SPDX-License-Identifier: BSD-3-Clause
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from .kettle import Kettle
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from .protocol import Message, FrameType, PowerType
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@ -1,391 +1,53 @@
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# SPDX-License-Identifier: BSD-3-Clause
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from __future__ import annotations
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import logging
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import zeroconf
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import socket
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import random
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import struct
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from enum import Enum
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from ipaddress import ip_address, IPv4Address, IPv6Address
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from typing import Union, Optional, Any
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import cryptography
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import cryptography.hazmat.primitives._serialization
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from cryptography.hazmat.primitives.asymmetric.ec import SECP192R1, SECP256R1, SECP384R1
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from cryptography.hazmat.primitives.asymmetric.x25519 import X25519PrivateKey, X25519PublicKey
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from cryptography.hazmat.primitives import hashes, ciphers, padding
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from cryptography.hazmat.primitives.ciphers import algorithms, modes
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from cryptography.hazmat.primitives import hashes
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from functools import partial
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from abc import ABC
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from ipaddress import ip_address
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from typing import Optional
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from .protocol import (
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Connection,
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ModeMessage,
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HandshakeMessage,
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TargetTemperatureMessage,
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Message,
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PowerType
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)
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_logger = logging.getLogger(__name__)
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PubkeyType = Union[Any, X25519PublicKey, bytes]
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PrivkeyType = Union[Any, X25519PrivateKey, bytes]
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# com.syncleoiot.iottransport.utils.crypto.EllipticCurveCoder
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class CurveType(Enum):
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secp192r1 = 19
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secp256r1 = 23
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secp384r1 = 24
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x25519 = 29
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def key_to_bytes(key: Union[str, bytes, X25519PrivateKey, X25519PublicKey], reverse=False) -> bytes:
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val = None
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if isinstance(key, str):
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val = bytes.fromhex(key)
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if isinstance(key, bytes):
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# logger.warning('key_to_bytes: key is bytes already')
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val = key
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raw_kwargs = dict(encoding=cryptography.hazmat.primitives._serialization.Encoding.Raw,
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format=cryptography.hazmat.primitives._serialization.PublicFormat.Raw)
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if isinstance(key, X25519PublicKey):
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val = key.public_bytes(**raw_kwargs)
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elif isinstance(key, X25519PrivateKey):
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val = key.private_bytes(**raw_kwargs)
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assert type(val) is bytes
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if reverse:
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val = bytes(reversed(val))
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return val
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def key_to_hex(key: Union[str, bytes, X25519PrivateKey, X25519PublicKey]) -> str:
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return key_to_bytes(key).hex()
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def arraycopy(src, src_pos, dest, dest_pos, length):
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for i in range(length):
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dest[i + dest_pos] = src[i + src_pos]
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def pack(fmt, *args):
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# enforce little endian
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return struct.pack(f'<{fmt}', *args)
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def unpack(fmt, *args):
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# enforce little endian
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return struct.unpack(f'<{fmt}', *args)
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class FrameType(Enum):
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ACK = 0
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CMD = 1
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AUX = 2
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NAK = 3
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class FrameHead:
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seq: int # u8
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type: FrameType # u8
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length: int # u16
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@staticmethod
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def from_bytes(buf: bytes) -> FrameHead:
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seq, ft, length = unpack('BBH', buf)
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return FrameHead(seq, FrameType(ft), length)
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def __init__(self, seq: int, frame_type: FrameType, length: Optional[int] = None):
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self.seq = seq
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self.type = frame_type
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self.length = length or 0
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def pack(self) -> bytes:
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assert self.length != 0, "FrameHead.length has not been set"
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return pack('BBH', self.seq, self.type.value, self.length)
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class FrameItem:
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head: FrameHead
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payload: bytes
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def __init__(self, head: FrameHead, payload: Optional[bytes] = None):
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self.head = head
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self.payload = payload
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def setpayload(self, payload: Union[bytes, bytearray]):
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if isinstance(payload, bytearray):
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payload = bytes(payload)
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self.payload = payload
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self.head.length = len(payload)
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def pack(self) -> bytes:
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ba = bytearray(self.head.pack())
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ba.extend(self.payload)
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return bytes(ba)
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class Message:
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frame: Optional[FrameItem]
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def __init__(self):
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self.frame = None
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@staticmethod
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def from_encrypted(buf: bytes, inkey: bytes, outkey: bytes) -> Message:
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_logger.debug('[from_encrypted] buf='+buf.hex())
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# print(f'buf len={len(buf)}')
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assert len(buf) >= 4, 'invalid size'
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head = FrameHead.from_bytes(buf[:4])
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assert len(buf) == head.length + 4, f'invalid buf size ({len(buf)} != {head.length})'
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payload = buf[4:]
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# byte b = paramFrameHead.seq;
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b = head.seq
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# TODO check if protocol is 2, otherwise raise an exception
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j = b & 0xF
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k = b >> 4 & 0xF
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# arrayOfByte1 = this.encryptionInKey;
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key = bytearray(len(inkey))
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arraycopy(inkey, j, key, 0, len(inkey) - j)
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arraycopy(inkey, 0, key, len(inkey) - j, j)
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# arrayOfByte1 = this.encryptionOutKey;
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iv = bytearray(len(outkey))
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arraycopy(outkey, k, iv, 0, len(outkey) - k)
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arraycopy(outkey, 0, iv, len(outkey) - k, k)
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cipher = ciphers.Cipher(algorithms.AES(key), modes.CBC(iv))
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decryptor = cipher.decryptor()
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decrypted_data = decryptor.update(payload) + decryptor.finalize()
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# print(f'head.length={head.length} len(decr)={len(decrypted_data)}')
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if len(decrypted_data) > head.length:
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unpadder = padding.PKCS7(algorithms.AES.block_size).unpadder()
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decrypted_data = unpadder.update(decrypted_data)
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try:
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decrypted_data += unpadder.finalize()
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except ValueError as exc:
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_logger.exception(exc)
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pass
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_logger.debug('decrypted data:', decrypted_data.hex())
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assert len(decrypted_data) != 0, 'decrypted data is null'
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assert head.seq == decrypted_data[0], f'decrypted seq mismatch {head.seq} != {decrypted_data[0]}'
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if head.type == FrameType.ACK:
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return AckMessage(head.seq)
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elif head.type == FrameType.NAK:
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return NakMessage(head.seq)
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else:
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cmd = decrypted_data[0]
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data = decrypted_data[2:]
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return CmdMessage(head.seq, cmd, data)
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def encrypt(self):
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raise RuntimeError('this method is abstract')
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@property
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def data(self) -> bytes:
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raise RuntimeError('this method is abstract')
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def _encrypt(self,
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outkey: bytes,
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inkey: bytes,
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token: bytes,
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pubkey: bytes):
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assert self.frame is not None
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data = self.data
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assert data is not None
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# print('data: '+data.hex())
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b = self.frame.head.seq
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i = b & 0xf
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j = b >> 4 & 0xf
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# byte[] arrayOfByte1 = this.encryptionOutKey;
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outkey = bytearray(outkey)
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# arrayOfByte = new byte[arrayOfByte1.length];
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l = len(outkey)
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key = bytearray(l)
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# System.arraycopy(arrayOfByte1, i, arrayOfByte, 0, arrayOfByte1.length - i);
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arraycopy(outkey, i, key, 0, l-i)
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# arrayOfByte1 = this.encryptionOutKey;
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# System.arraycopy(arrayOfByte1, 0, arrayOfByte, arrayOfByte1.length - i, i);
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arraycopy(outkey, 0, key, l-i, i)
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# byte[] arrayOfByte2 = this.encryptionInKey;
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inkey = bytearray(inkey)
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# arrayOfByte1 = new byte[arrayOfByte2.length];
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l = len(inkey)
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iv = bytearray(l)
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# System.arraycopy(arrayOfByte2, j, arrayOfByte1, 0, arrayOfByte2.length - j);
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arraycopy(inkey, j, iv, 0, l-j)
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# arrayOfByte2 = this.encryptionInKey;
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# System.arraycopy(arrayOfByte2, 0, arrayOfByte1, arrayOfByte2.length - j, j);
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arraycopy(inkey, 0, iv, l-j, j)
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# Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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# SecretKeySpec secretKeySpec = new SecretKeySpec();
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# this(arrayOfByte, "AES");
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# IvParameterSpec ivParameterSpec = new IvParameterSpec();
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# this(arrayOfByte1);
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# cipher.init(1, secretKeySpec, ivParameterSpec);
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cipher = ciphers.Cipher(algorithms.AES(key), modes.CBC(iv))
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encryptor = cipher.encryptor()
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# arrayOfByte = new byte[paramArrayOfbyte.length + 1];
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# arrayOfByte[0] = b;
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# System.arraycopy(paramArrayOfbyte, 0, arrayOfByte, 1, paramArrayOfbyte.length);
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# data = bytearray(data)
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newdata = bytearray(len(data)+1)
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newdata[0] = b
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# data = bytearray(len(payload)+1)
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# data[0] = b
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arraycopy(data, 0, newdata, 1, len(data))
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newdata = bytes(newdata)
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_logger.debug('payload to be sent:' + newdata.hex())
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# arrayOfByte = ByteUtils.concatArrays(cipher.update(arrayOfByte), cipher.doFinal());
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encdata = bytearray()
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padder = padding.PKCS7(algorithms.AES.block_size).padder()
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encdata.extend(encryptor.update(padder.update(newdata) + padder.finalize()))
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encdata.extend(encryptor.finalize())
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self.frame.setpayload(encdata)
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def construct(self) -> FrameItem:
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raise RuntimeError('this is an abstract method')
|
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|
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|
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class AckMessage(Message):
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def __init__(self, seq: int):
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super().__init__()
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self.frame = FrameItem(FrameHead(seq, FrameType.ACK, 0))
|
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|
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|
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class NakMessage(Message):
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def __init__(self, seq: int):
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super().__init__()
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self.frame = FrameItem(FrameHead(seq, FrameType.NAK, 0))
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|
||||
|
||||
class CmdMessage(Message):
|
||||
cmd: Optional[int]
|
||||
cmd_data: Optional[Union[bytes, str]]
|
||||
|
||||
def __init__(self,
|
||||
seq: Optional[int] = None,
|
||||
cmd: Optional[int] = None,
|
||||
cmd_data: Optional[bytes] = None):
|
||||
super().__init__()
|
||||
|
||||
if (seq is not None) and (cmd is not None) and (cmd_data is not None):
|
||||
self.frame = FrameItem(FrameHead(seq, FrameType.CMD))
|
||||
# self.frame.setpayload(data)
|
||||
self.cmd = cmd
|
||||
self.cmd_data = cmd_data
|
||||
else:
|
||||
self.cmd = None
|
||||
self.cmd_data = None
|
||||
|
||||
@property
|
||||
def data(self) -> bytes:
|
||||
buf = bytearray()
|
||||
buf.append(self.cmd)
|
||||
buf.extend(self.cmd_data)
|
||||
# print(buf)
|
||||
return bytes(buf)
|
||||
|
||||
|
||||
class ModeMessage(CmdMessage):
|
||||
def __init__(self, seq: int, on: bool):
|
||||
super().__init__(seq, 1, b'\x01' if on else b'\x00')
|
||||
|
||||
|
||||
class TargetTemperatureMessage(CmdMessage):
|
||||
def __init__(self, seq: int, temp: int):
|
||||
super().__init__(seq, 2, bytes(bytearray([temp, 0])))
|
||||
|
||||
|
||||
class HandshakeMessage(CmdMessage):
|
||||
def _encrypt(self,
|
||||
outkey: bytes,
|
||||
inkey: bytes,
|
||||
token: bytes,
|
||||
pubkey: bytes):
|
||||
cipher = ciphers.Cipher(algorithms.AES(outkey), modes.CBC(inkey))
|
||||
encryptor = cipher.encryptor()
|
||||
|
||||
encr_data = bytearray()
|
||||
encr_data.extend(encryptor.update(token))
|
||||
encr_data.extend(encryptor.finalize())
|
||||
|
||||
payload = bytearray()
|
||||
|
||||
# const/4 v7, 0x0
|
||||
# aput-byte v7, v5, v7
|
||||
payload.append(0)
|
||||
|
||||
payload.extend(pubkey)
|
||||
payload.extend(encr_data)
|
||||
|
||||
self.frame = FrameItem(FrameHead(0, FrameType.CMD))
|
||||
self.frame.setpayload(payload)
|
||||
|
||||
|
||||
# Polaris PWK 1725CGLD IoT kettle
|
||||
class Kettle(zeroconf.ServiceListener):
|
||||
class Kettle(zeroconf.ServiceListener, ABC):
|
||||
macaddr: str
|
||||
token: str
|
||||
device_token: str
|
||||
sb: Optional[zeroconf.ServiceBrowser]
|
||||
found_device: Optional[zeroconf.ServiceInfo]
|
||||
privkey: Optional[Union[Any, X25519PrivateKey]]
|
||||
pubkey: Optional[bytes]
|
||||
sharedkey: Optional[bytes]
|
||||
sharedsha256: Optional[bytes]
|
||||
encinkey: Optional[bytes]
|
||||
encoutkey: Optional[bytes]
|
||||
seqno: int
|
||||
conn: Optional[Connection]
|
||||
|
||||
def __init__(self, mac: str, token: str):
|
||||
def __init__(self, mac: str, device_token: str):
|
||||
super().__init__()
|
||||
self.zeroconf = zeroconf.Zeroconf()
|
||||
self.sb = None
|
||||
self.macaddr = mac
|
||||
self.token = token
|
||||
self.device_token = device_token
|
||||
self.found_device = None
|
||||
self.privkey = None
|
||||
self.pubkey = None
|
||||
self.sharedkey = None
|
||||
self.sharedsha256 = None
|
||||
self.encinkey = None
|
||||
self.encoutkey = None
|
||||
self.sourceport = random.randint(1024, 65535)
|
||||
self.seqno = 0
|
||||
self.conn = None
|
||||
|
||||
def find(self):
|
||||
def find(self) -> zeroconf.ServiceInfo:
|
||||
self.sb = zeroconf.ServiceBrowser(self.zeroconf, "_syncleo._udp.local.", self)
|
||||
self.sb.join()
|
||||
# return self.found_device
|
||||
|
||||
return self.found_device
|
||||
|
||||
# zeroconf.ServiceListener implementation
|
||||
def add_service(self,
|
||||
@ -401,96 +63,35 @@ class Kettle(zeroconf.ServiceListener):
|
||||
self.zeroconf.close()
|
||||
self.found_device = info
|
||||
|
||||
# def update_service(self, zc: Zeroconf, type_: str, name: str) -> None:
|
||||
# print(f"Service {name} updated")
|
||||
#
|
||||
# def remove_service(self, zc: Zeroconf, type_: str, name: str) -> None:
|
||||
# print(f"Service {name} removed")
|
||||
assert self.device_curve == 29, f'curve type {self.device_curve} is not implemented'
|
||||
|
||||
def start_server(self, callback: callable):
|
||||
addresses = list(map(ip_address, self.found_device.addresses))
|
||||
self.conn = Connection(addr=addresses[0],
|
||||
port=int(self.found_device.port),
|
||||
device_pubkey=self.device_pubkey,
|
||||
device_token=bytes.fromhex(self.device_token))
|
||||
|
||||
# shake the kettle's hand
|
||||
self._pass_message(HandshakeMessage(), callback)
|
||||
self.conn.start()
|
||||
|
||||
def stop_server(self):
|
||||
self.conn.interrupted = True
|
||||
|
||||
@property
|
||||
def device_pubkey(self) -> str:
|
||||
return self.found_device.properties[b'public'].decode()
|
||||
def device_pubkey(self) -> bytes:
|
||||
return bytes.fromhex(self.found_device.properties[b'public'].decode())
|
||||
|
||||
@property
|
||||
def device_addresses(self) -> list[Union[IPv4Address, IPv6Address]]:
|
||||
return list(map(ip_address, self.found_device.addresses))
|
||||
def device_curve(self) -> int:
|
||||
return int(self.found_device.properties[b'curve'].decode())
|
||||
|
||||
@property
|
||||
def device_port(self) -> int:
|
||||
return int(self.found_device.port)
|
||||
def set_power(self, power_type: PowerType, callback: callable):
|
||||
self._pass_message(ModeMessage(power_type), callback)
|
||||
|
||||
# @property
|
||||
# def device_pubkey_bytes(self) -> bytes:
|
||||
# return bytes.fromhex(self.device_pubkey)
|
||||
def set_target_temperature(self, temp: int, callback: callable):
|
||||
self._pass_message(TargetTemperatureMessage(temp), callback)
|
||||
|
||||
@property
|
||||
def curve_type(self) -> CurveType:
|
||||
return CurveType(int(self.found_device.properties[b'curve'].decode()))
|
||||
|
||||
def genkeys(self):
|
||||
# based on decompiled EllipticCurveCoder.java
|
||||
|
||||
if self.curve_type in (CurveType.secp192r1, CurveType.secp256r1, CurveType.secp384r1):
|
||||
if self.curve_type == CurveType.secp192r1:
|
||||
curve = SECP192R1()
|
||||
elif self.curve_type == CurveType.secp256r1:
|
||||
curve = SECP256R1()
|
||||
elif self.curve_type == CurveType.secp384r1:
|
||||
curve = SECP384R1()
|
||||
else:
|
||||
raise TypeError(f'unexpected curve type: {self.curve_type}')
|
||||
|
||||
self.privkey = cryptography.hazmat.primitives.asymmetric.ec.generate_private_key(curve)
|
||||
|
||||
elif self.curve_type == CurveType.x25519:
|
||||
self.privkey = X25519PrivateKey.generate()
|
||||
|
||||
self.pubkey = key_to_bytes(self.privkey.public_key(), reverse=True)
|
||||
|
||||
def genshared(self):
|
||||
self.sharedkey = bytes(reversed(
|
||||
self.privkey.exchange(X25519PublicKey.from_public_bytes(
|
||||
key_to_bytes(self.device_pubkey, reverse=True))
|
||||
)
|
||||
))
|
||||
|
||||
digest = hashes.Hash(hashes.SHA256())
|
||||
digest.update(self.sharedkey)
|
||||
self.sharedsha256 = digest.finalize()
|
||||
|
||||
self.encinkey = self.sharedsha256[:16]
|
||||
self.encoutkey = self.sharedsha256[16:]
|
||||
|
||||
def next_seqno(self) -> int:
|
||||
self.seqno += 1
|
||||
return self.seqno
|
||||
|
||||
def setpower(self, on: bool):
|
||||
message = ModeMessage(self.next_seqno(), on)
|
||||
print(self.do_send(message))
|
||||
|
||||
def settemperature(self, temp: int):
|
||||
message = TargetTemperatureMessage(self.next_seqno(), temp)
|
||||
print(self.do_send(message))
|
||||
|
||||
def handshake(self):
|
||||
message = HandshakeMessage()
|
||||
response = self.do_send(message)
|
||||
assert response.frame.head.type == FrameType.ACK, 'ACK expected'
|
||||
|
||||
def do_send(self, message: Message) -> Message:
|
||||
message._encrypt(pubkey=self.pubkey,
|
||||
outkey=self.encoutkey,
|
||||
inkey=self.encinkey,
|
||||
token=bytes.fromhex(self.token))
|
||||
|
||||
dst_addr = str(self.device_addresses[0])
|
||||
dst_port = self.device_port
|
||||
|
||||
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
||||
sock.bind(('0.0.0.0', self.sourceport))
|
||||
sock.sendto(message.frame.pack(), (dst_addr, dst_port))
|
||||
_logger.debug('data has been sent, waiting for incoming data....')
|
||||
|
||||
data = sock.recv(4096)
|
||||
return Message.from_encrypted(data, inkey=self.encinkey, outkey=self.encoutkey)
|
||||
def _pass_message(self, message: Message, callback: callable):
|
||||
self.conn.send_message(message, partial(callback, self))
|
||||
|
||||
412
src/polaris/protocol.py
Normal file
412
src/polaris/protocol.py
Normal file
@ -0,0 +1,412 @@
|
||||
# SPDX-License-Identifier: BSD-3-Clause
|
||||
|
||||
from __future__ import annotations
|
||||
import logging
|
||||
import socket
|
||||
import random
|
||||
import struct
|
||||
import threading
|
||||
import queue
|
||||
|
||||
from enum import Enum
|
||||
from typing import Union, Optional, Any
|
||||
from ipaddress import IPv4Address, IPv6Address
|
||||
|
||||
import cryptography.hazmat.primitives._serialization
|
||||
|
||||
from cryptography.hazmat.primitives.asymmetric.x25519 import X25519PrivateKey, X25519PublicKey
|
||||
from cryptography.hazmat.primitives import ciphers, padding, hashes
|
||||
from cryptography.hazmat.primitives.ciphers import algorithms, modes
|
||||
|
||||
|
||||
_logger = logging.getLogger(__name__)
|
||||
|
||||
|
||||
# drop-in replacement for Java API
|
||||
# TODO: rewrite
|
||||
def arraycopy(src, src_pos, dest, dest_pos, length):
|
||||
for i in range(length):
|
||||
dest[i + dest_pos] = src[i + src_pos]
|
||||
|
||||
|
||||
class FrameType(Enum):
|
||||
ACK = 0
|
||||
CMD = 1
|
||||
AUX = 2
|
||||
NAK = 3
|
||||
|
||||
|
||||
class PowerType(Enum):
|
||||
OFF = 0 # turn off
|
||||
ON = 1 # turn on, set target temperature to 100
|
||||
CUSTOM = 3 # turn on, allows custom target temperature
|
||||
# MYSTERY_MODE = 2 # don't know what 2 means, needs testing
|
||||
# update: if I set it to '2', it just resets to '0'
|
||||
|
||||
|
||||
class FrameHead:
|
||||
seq: int # u8
|
||||
type: FrameType # u8
|
||||
length: int # u16
|
||||
|
||||
@staticmethod
|
||||
def from_bytes(buf: bytes) -> FrameHead:
|
||||
seq, ft, length = struct.unpack('<BBH', buf)
|
||||
return FrameHead(seq, FrameType(ft), length)
|
||||
|
||||
def __init__(self, seq: int, frame_type: FrameType, length: Optional[int] = None):
|
||||
self.seq = seq
|
||||
self.type = frame_type
|
||||
self.length = length or 0
|
||||
|
||||
def pack(self) -> bytes:
|
||||
assert self.length != 0, "FrameHead.length has not been set"
|
||||
return struct.pack('<BBH', self.seq, self.type.value, self.length)
|
||||
|
||||
|
||||
class FrameItem:
|
||||
head: FrameHead
|
||||
payload: bytes
|
||||
|
||||
def __init__(self, head: FrameHead, payload: Optional[bytes] = None):
|
||||
self.head = head
|
||||
self.payload = payload
|
||||
|
||||
def setpayload(self, payload: Union[bytes, bytearray]):
|
||||
if isinstance(payload, bytearray):
|
||||
payload = bytes(payload)
|
||||
self.payload = payload
|
||||
self.head.length = len(payload)
|
||||
|
||||
def pack(self) -> bytes:
|
||||
ba = bytearray(self.head.pack())
|
||||
ba.extend(self.payload)
|
||||
return bytes(ba)
|
||||
|
||||
|
||||
class Message:
|
||||
frame: Optional[FrameItem]
|
||||
|
||||
def __init__(self):
|
||||
self.frame = None
|
||||
|
||||
@staticmethod
|
||||
def from_encrypted(buf: bytes,
|
||||
inkey: bytes,
|
||||
outkey: bytes) -> Message:
|
||||
# _logger.debug('[from_encrypted] buf='+buf.hex())
|
||||
# print(f'buf len={len(buf)}')
|
||||
assert len(buf) >= 4, 'invalid size'
|
||||
head = FrameHead.from_bytes(buf[:4])
|
||||
|
||||
assert len(buf) == head.length + 4, f'invalid buf size ({len(buf)} != {head.length})'
|
||||
|
||||
payload = buf[4:]
|
||||
|
||||
# byte b = paramFrameHead.seq;
|
||||
b = head.seq
|
||||
|
||||
# TODO check if protocol is 2, otherwise raise an exception
|
||||
|
||||
j = b & 0xF
|
||||
k = b >> 4 & 0xF
|
||||
|
||||
key = bytearray(len(inkey))
|
||||
arraycopy(inkey, j, key, 0, len(inkey) - j)
|
||||
arraycopy(inkey, 0, key, len(inkey) - j, j)
|
||||
|
||||
iv = bytearray(len(outkey))
|
||||
arraycopy(outkey, k, iv, 0, len(outkey) - k)
|
||||
arraycopy(outkey, 0, iv, len(outkey) - k, k)
|
||||
|
||||
cipher = ciphers.Cipher(algorithms.AES(key), modes.CBC(iv))
|
||||
decryptor = cipher.decryptor()
|
||||
decrypted_data = decryptor.update(payload) + decryptor.finalize()
|
||||
|
||||
# print(f'head.length={head.length} len(decr)={len(decrypted_data)}')
|
||||
# if len(decrypted_data) > head.length:
|
||||
unpadder = padding.PKCS7(algorithms.AES.block_size).unpadder()
|
||||
decrypted_data = unpadder.update(decrypted_data)
|
||||
# try:
|
||||
decrypted_data += unpadder.finalize()
|
||||
# except ValueError as exc:
|
||||
# _logger.exception(exc)
|
||||
# pass
|
||||
|
||||
assert len(decrypted_data) != 0, 'decrypted data is null'
|
||||
assert head.seq == decrypted_data[0], f'decrypted seq mismatch {head.seq} != {decrypted_data[0]}'
|
||||
|
||||
# _logger.debug('Message.from_encrypted: plaintext: '+decrypted_data.hex())
|
||||
|
||||
if head.type == FrameType.ACK:
|
||||
return AckMessage(head.seq)
|
||||
|
||||
elif head.type == FrameType.NAK:
|
||||
return NakMessage(head.seq)
|
||||
|
||||
elif head.type == FrameType.AUX:
|
||||
raise NotImplementedError('FrameType AUX is not yet implemented')
|
||||
|
||||
elif head.type == FrameType.CMD:
|
||||
cmd = decrypted_data[0]
|
||||
data = decrypted_data[2:]
|
||||
return CmdMessage(head.seq, cmd, data)
|
||||
|
||||
else:
|
||||
raise NotImplementedError(f'Unexpected frame type: {head.type}')
|
||||
|
||||
@property
|
||||
def data(self) -> bytes:
|
||||
return b''
|
||||
|
||||
def encrypt(self,
|
||||
outkey: bytes,
|
||||
inkey: bytes,
|
||||
token: bytes,
|
||||
pubkey: bytes):
|
||||
|
||||
assert self.frame is not None
|
||||
|
||||
data = self.data
|
||||
assert data is not None
|
||||
|
||||
b = self.frame.head.seq
|
||||
i = b & 0xf
|
||||
j = b >> 4 & 0xf
|
||||
|
||||
outkey = bytearray(outkey)
|
||||
|
||||
l = len(outkey)
|
||||
key = bytearray(l)
|
||||
|
||||
arraycopy(outkey, i, key, 0, l-i)
|
||||
arraycopy(outkey, 0, key, l-i, i)
|
||||
|
||||
inkey = bytearray(inkey)
|
||||
|
||||
l = len(inkey)
|
||||
iv = bytearray(l)
|
||||
|
||||
arraycopy(inkey, j, iv, 0, l-j)
|
||||
arraycopy(inkey, 0, iv, l-j, j)
|
||||
|
||||
cipher = ciphers.Cipher(algorithms.AES(key), modes.CBC(iv))
|
||||
encryptor = cipher.encryptor()
|
||||
|
||||
newdata = bytearray(len(data)+1)
|
||||
newdata[0] = b
|
||||
|
||||
arraycopy(data, 0, newdata, 1, len(data))
|
||||
|
||||
newdata = bytes(newdata)
|
||||
_logger.debug('payload to be sent: ' + newdata.hex())
|
||||
|
||||
padder = padding.PKCS7(algorithms.AES.block_size).padder()
|
||||
ciphertext = bytearray()
|
||||
ciphertext.extend(encryptor.update(padder.update(newdata) + padder.finalize()))
|
||||
ciphertext.extend(encryptor.finalize())
|
||||
|
||||
self.frame.setpayload(ciphertext)
|
||||
|
||||
def set_seq(self, seq: int):
|
||||
self.frame.head.seq = seq
|
||||
|
||||
def __repr__(self):
|
||||
return f'<{self.__class__.__name__} seq={self.frame.head.seq}>'
|
||||
|
||||
|
||||
class AckMessage(Message):
|
||||
def __init__(self, seq: int = 0):
|
||||
super().__init__()
|
||||
self.frame = FrameItem(FrameHead(seq, FrameType.ACK, 0))
|
||||
|
||||
|
||||
class NakMessage(Message):
|
||||
def __init__(self, seq: int = 0):
|
||||
super().__init__()
|
||||
self.frame = FrameItem(FrameHead(seq, FrameType.NAK, 0))
|
||||
|
||||
|
||||
class CmdMessage(Message):
|
||||
_type: Optional[int]
|
||||
_data: bytes
|
||||
|
||||
def __init__(self, seq=0,
|
||||
type: Optional[int] = None,
|
||||
data: bytes = b''):
|
||||
super().__init__()
|
||||
self._data = data
|
||||
if type is not None:
|
||||
self.frame = FrameItem(FrameHead(seq, FrameType.CMD))
|
||||
self._type = type
|
||||
else:
|
||||
self._type = None
|
||||
|
||||
@property
|
||||
def data(self) -> bytes:
|
||||
buf = bytearray()
|
||||
buf.append(self._type)
|
||||
buf.extend(self._data)
|
||||
return bytes(buf)
|
||||
|
||||
def __repr__(self):
|
||||
params = [
|
||||
__name__+'.'+self.__class__.__name__,
|
||||
f'seq={self.frame.head.seq}',
|
||||
# f'type={self.frame.head.type}',
|
||||
f'cmd={self._type}'
|
||||
]
|
||||
if self._data:
|
||||
params.append(f'data={self._data.hex()}')
|
||||
return '<'+' '.join(params)+'>'
|
||||
|
||||
|
||||
class ModeMessage(CmdMessage):
|
||||
def __init__(self, power_type: PowerType):
|
||||
super().__init__(type=1,
|
||||
data=(power_type.value).to_bytes(1, byteorder='little'))
|
||||
|
||||
|
||||
class TargetTemperatureMessage(CmdMessage):
|
||||
def __init__(self, temp: int):
|
||||
super().__init__(type=2,
|
||||
data=bytes(bytearray([temp, 0])))
|
||||
|
||||
|
||||
class HandshakeMessage(CmdMessage):
|
||||
def __init__(self):
|
||||
super().__init__(type=0)
|
||||
|
||||
def encrypt(self,
|
||||
outkey: bytes,
|
||||
inkey: bytes,
|
||||
token: bytes,
|
||||
pubkey: bytes):
|
||||
cipher = ciphers.Cipher(algorithms.AES(outkey), modes.CBC(inkey))
|
||||
encryptor = cipher.encryptor()
|
||||
|
||||
ciphertext = bytearray()
|
||||
ciphertext.extend(encryptor.update(token))
|
||||
ciphertext.extend(encryptor.finalize())
|
||||
|
||||
pld = bytearray()
|
||||
pld.append(0)
|
||||
pld.extend(pubkey)
|
||||
pld.extend(ciphertext)
|
||||
|
||||
self.frame.setpayload(pld)
|
||||
|
||||
|
||||
# TODO
|
||||
# implement resending UDP messages if no answer has been received in a second
|
||||
# try at least 5 times, then give up
|
||||
class Connection(threading.Thread):
|
||||
seq_no: int
|
||||
source_port: int
|
||||
device_addr: str
|
||||
device_port: int
|
||||
device_token: bytes
|
||||
interrupted: bool
|
||||
waiting_for_response: dict[int, callable]
|
||||
pubkey: Optional[bytes]
|
||||
encinkey: Optional[bytes]
|
||||
encoutkey: Optional[bytes]
|
||||
|
||||
def __init__(self,
|
||||
addr: Union[IPv4Address, IPv6Address],
|
||||
port: int,
|
||||
device_pubkey: bytes,
|
||||
device_token: bytes):
|
||||
super().__init__()
|
||||
self.logger = logging.getLogger(__name__+'.'+self.__class__.__name__)
|
||||
self.setName(self.__class__.__name__)
|
||||
# self.daemon = True
|
||||
|
||||
self.seq_no = -1
|
||||
self.source_port = random.randint(1024, 65535)
|
||||
self.device_addr = str(addr)
|
||||
self.device_port = port
|
||||
self.device_token = device_token
|
||||
self.lock = threading.Lock()
|
||||
self.outgoing_queue = queue.SimpleQueue()
|
||||
self.waiting_for_response = {}
|
||||
self.interrupted = False
|
||||
|
||||
self.pubkey = None
|
||||
self.encinkey = None
|
||||
self.encoutkey = None
|
||||
|
||||
self.prepare_keys(device_pubkey)
|
||||
|
||||
def prepare_keys(self, device_pubkey: bytes):
|
||||
# generate key pair
|
||||
privkey = X25519PrivateKey.generate()
|
||||
|
||||
self.pubkey = bytes(reversed(privkey.public_key().public_bytes(encoding=cryptography.hazmat.primitives._serialization.Encoding.Raw,
|
||||
format=cryptography.hazmat.primitives._serialization.PublicFormat.Raw)))
|
||||
|
||||
# generate shared key
|
||||
device_pubkey = X25519PublicKey.from_public_bytes(
|
||||
bytes(reversed(device_pubkey))
|
||||
)
|
||||
shared_key = bytes(reversed(
|
||||
privkey.exchange(device_pubkey)
|
||||
))
|
||||
|
||||
# in/out encryption keys
|
||||
digest = hashes.Hash(hashes.SHA256())
|
||||
digest.update(shared_key)
|
||||
|
||||
shared_sha256 = digest.finalize()
|
||||
|
||||
self.encinkey = shared_sha256[:16]
|
||||
self.encoutkey = shared_sha256[16:]
|
||||
|
||||
def run(self):
|
||||
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
||||
sock.bind(('0.0.0.0', self.source_port))
|
||||
sock.settimeout(1)
|
||||
|
||||
while not self.interrupted:
|
||||
if not self.outgoing_queue.empty():
|
||||
message = self.outgoing_queue.get()
|
||||
message.encrypt(outkey=self.encoutkey,
|
||||
inkey=self.encinkey,
|
||||
token=self.device_token,
|
||||
pubkey=self.pubkey)
|
||||
buf = message.frame.pack()
|
||||
self.logger.debug('send: '+buf.hex())
|
||||
self.logger.debug(f'sendto: {self.device_addr}:{self.device_port}')
|
||||
sock.sendto(buf, (self.device_addr, self.device_port))
|
||||
try:
|
||||
data = sock.recv(4096)
|
||||
self.handle_incoming(data)
|
||||
except TimeoutError:
|
||||
pass
|
||||
|
||||
def handle_incoming(self, buf: bytes):
|
||||
self.logger.debug('handle_incoming: '+buf.hex())
|
||||
message = Message.from_encrypted(buf, inkey=self.encinkey, outkey=self.encoutkey)
|
||||
if message.frame.head.seq in self.waiting_for_response:
|
||||
self.logger.info(f'received awaited message: {message}')
|
||||
try:
|
||||
f = self.waiting_for_response[message.frame.head.seq]
|
||||
f(message)
|
||||
except Exception as exc:
|
||||
self.logger.exception(exc)
|
||||
finally:
|
||||
del self.waiting_for_response[message.frame.head.seq]
|
||||
else:
|
||||
self.logger.info(f'received message (not awaited): {message}')
|
||||
|
||||
def send_message(self, message: Message, callback: callable):
|
||||
seq = self.next_seqno()
|
||||
message.set_seq(seq)
|
||||
self.outgoing_queue.put(message)
|
||||
self.waiting_for_response[seq] = callback
|
||||
|
||||
def next_seqno(self) -> int:
|
||||
with self.lock:
|
||||
self.seq_no += 1
|
||||
self.logger.debug(f'next_seqno: set to {self.seq_no}')
|
||||
return self.seq_no
|
||||
@ -1,18 +1,21 @@
|
||||
#!/usr/bin/env python3
|
||||
# SPDX-License-Identifier: BSD-3-Clause
|
||||
|
||||
import logging
|
||||
# import os
|
||||
import sys
|
||||
import time
|
||||
import paho.mqtt.client as mqtt
|
||||
|
||||
# from datetime import datetime
|
||||
# from html import escape
|
||||
from argparse import ArgumentParser
|
||||
from queue import SimpleQueue
|
||||
# from home.bot import Wrapper, Context
|
||||
# from home.api.types import BotType
|
||||
# from home.util import parse_addr
|
||||
from home.mqtt import MQTTBase
|
||||
from home.config import config
|
||||
from polaris import Kettle
|
||||
from polaris import Kettle, Message, FrameType, PowerType
|
||||
|
||||
# from telegram.error import TelegramError
|
||||
# from telegram import ReplyKeyboardMarkup, InlineKeyboardMarkup, InlineKeyboardButton
|
||||
@ -24,6 +27,7 @@ from polaris import Kettle
|
||||
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
control_tasks = SimpleQueue()
|
||||
|
||||
# bot: Optional[Wrapper] = None
|
||||
# RenderedContent = tuple[str, Optional[InlineKeyboardMarkup]]
|
||||
@ -88,6 +92,24 @@ class MQTTServer(MQTTBase):
|
||||
# ]
|
||||
# return ReplyKeyboardMarkup(buttons, one_time_keyboard=False)
|
||||
|
||||
def kettle_connection_established(k: Kettle, response: Message):
|
||||
try:
|
||||
assert response.frame.head.type == FrameType.ACK, f'ACK expected, but received: {response}'
|
||||
except AssertionError:
|
||||
k.stop_server()
|
||||
return
|
||||
|
||||
def next_task(k, response):
|
||||
if not control_tasks.empty():
|
||||
task = control_tasks.get()
|
||||
f, args = task(k)
|
||||
args.append(next_task)
|
||||
f(*args)
|
||||
else:
|
||||
k.stop_server()
|
||||
|
||||
next_task(k, response)
|
||||
|
||||
|
||||
def main():
|
||||
tempmin = 30
|
||||
@ -98,7 +120,8 @@ def main():
|
||||
parser.add_argument('-m', dest='mode', required=True, type=str, choices=('mqtt', 'control'))
|
||||
parser.add_argument('--on', action='store_true')
|
||||
parser.add_argument('--off', action='store_true')
|
||||
parser.add_argument('-t', '--temperature', dest='temp', type=int, choices=range(tempmin, tempmax+tempstep, tempstep))
|
||||
parser.add_argument('-t', '--temperature', dest='temp', type=int, default=tempmax,
|
||||
choices=range(tempmin, tempmax+tempstep, tempstep))
|
||||
|
||||
arg = config.load('polaris_kettle_bot', use_cli=True, parser=parser)
|
||||
|
||||
@ -113,27 +136,20 @@ def main():
|
||||
if arg.on and arg.off:
|
||||
raise RuntimeError('--on and --off are mutually exclusive')
|
||||
|
||||
k = Kettle(mac='40f52018dec1', token='3a5865f015950cae82cd120e76a80d28')
|
||||
k.find()
|
||||
print('device found')
|
||||
if arg.off:
|
||||
control_tasks.put(lambda k: (k.set_power, [PowerType.OFF]))
|
||||
else:
|
||||
if arg.temp == tempmax:
|
||||
control_tasks.put(lambda k: (k.set_power, [PowerType.ON]))
|
||||
else:
|
||||
control_tasks.put(lambda k: (k.set_target_temperature, [arg.temp]))
|
||||
control_tasks.put(lambda k: (k.set_power, [PowerType.CUSTOM]))
|
||||
|
||||
k.genkeys()
|
||||
k.genshared()
|
||||
k.handshake()
|
||||
k = Kettle(mac='40f52018dec1', device_token='3a5865f015950cae82cd120e76a80d28')
|
||||
info = k.find()
|
||||
print('found service:', info)
|
||||
|
||||
if arg.on:
|
||||
k.setpower(True)
|
||||
elif arg.off:
|
||||
k.setpower(False)
|
||||
elif arg.temp:
|
||||
k.settemperature(arg.temp)
|
||||
|
||||
# k.sendfirst()
|
||||
|
||||
# print('shared key:', key_to_hex(k.sharedkey))
|
||||
# print('shared hash:', key_to_hex(k.sharedsha256))
|
||||
|
||||
# print(len(k.sharedsha256))
|
||||
k.start_server(kettle_connection_established)
|
||||
|
||||
return 0
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user