581 lines
16 KiB
Go
581 lines
16 KiB
Go
/*
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* itd uses bluetooth low energy to communicate with InfiniTime devices
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* Copyright (C) 2021 Arsen Musayelyan
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package main
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import (
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"bufio"
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"encoding/json"
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"fmt"
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"io"
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"net"
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"os"
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"path/filepath"
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"time"
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"github.com/google/uuid"
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"github.com/mitchellh/mapstructure"
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"github.com/rs/zerolog/log"
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"github.com/spf13/viper"
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"go.arsenm.dev/infinitime"
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"go.arsenm.dev/infinitime/blefs"
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"go.arsenm.dev/itd/internal/types"
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"go.arsenm.dev/itd/translit"
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)
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type DoneMap map[string]chan struct{}
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func (dm DoneMap) Exists(key string) bool {
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_, ok := dm[key]
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return ok
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}
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func (dm DoneMap) Done(key string) {
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ch := dm[key]
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ch <- struct{}{}
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}
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func (dm DoneMap) Create(key string) {
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dm[key] = make(chan struct{}, 1)
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}
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func (dm DoneMap) Remove(key string) {
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close(dm[key])
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delete(dm, key)
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}
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var done = DoneMap{}
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func startSocket(dev *infinitime.Device) error {
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// Make socket directory if non-existant
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err := os.MkdirAll(filepath.Dir(viper.GetString("socket.path")), 0755)
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if err != nil {
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return err
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}
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// Remove old socket if it exists
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err = os.RemoveAll(viper.GetString("socket.path"))
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if err != nil {
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return err
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}
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// Listen on socket path
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ln, err := net.Listen("unix", viper.GetString("socket.path"))
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if err != nil {
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return err
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}
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fs, err := dev.FS()
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if err != nil {
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log.Warn().Err(err).Msg("Error getting BLE filesystem")
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}
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go func() {
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for {
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// Accept socket connection
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conn, err := ln.Accept()
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if err != nil {
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log.Error().Err(err).Msg("Error accepting connection")
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}
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// Concurrently handle connection
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go handleConnection(conn, dev, fs)
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}
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}()
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// Log socket start
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log.Info().Str("path", viper.GetString("socket.path")).Msg("Started control socket")
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return nil
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}
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func handleConnection(conn net.Conn, dev *infinitime.Device, fs *blefs.FS) {
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defer conn.Close()
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// Create new scanner on connection
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scanner := bufio.NewScanner(conn)
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for scanner.Scan() {
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var req types.Request
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// Decode scanned message into types.Request
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err := json.Unmarshal(scanner.Bytes(), &req)
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if err != nil {
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connErr(conn, req.Type, err, "Error decoding JSON input")
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continue
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}
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// If firmware is updating, return error
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if firmwareUpdating {
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connErr(conn, req.Type, nil, "Firmware update in progress")
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return
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}
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switch req.Type {
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case types.ReqTypeHeartRate:
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// Get heart rate from watch
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heartRate, err := dev.HeartRate()
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if err != nil {
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connErr(conn, req.Type, err, "Error getting heart rate")
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break
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}
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// Encode heart rate to connection
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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Value: heartRate,
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})
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case types.ReqTypeWatchHeartRate:
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heartRateCh, cancel, err := dev.WatchHeartRate()
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if err != nil {
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connErr(conn, req.Type, err, "Error getting heart rate channel")
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break
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}
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reqID := uuid.New().String()
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go func() {
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done.Create(reqID)
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// For every heart rate value
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for heartRate := range heartRateCh {
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select {
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case <-done[reqID]:
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// Stop notifications if done signal received
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cancel()
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done.Remove(reqID)
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return
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default:
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// Encode response to connection if no done signal received
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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ID: reqID,
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Value: heartRate,
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})
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}
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}
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}()
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case types.ReqTypeBattLevel:
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// Get battery level from watch
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battLevel, err := dev.BatteryLevel()
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if err != nil {
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connErr(conn, req.Type, err, "Error getting battery level")
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break
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}
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// Encode battery level to connection
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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Value: battLevel,
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})
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case types.ReqTypeWatchBattLevel:
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battLevelCh, cancel, err := dev.WatchBatteryLevel()
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if err != nil {
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connErr(conn, req.Type, err, "Error getting battery level channel")
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break
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}
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reqID := uuid.New().String()
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go func() {
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done.Create(reqID)
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// For every battery level value
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for battLevel := range battLevelCh {
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select {
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case <-done[reqID]:
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// Stop notifications if done signal received
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cancel()
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done.Remove(reqID)
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return
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default:
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// Encode response to connection if no done signal received
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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ID: reqID,
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Value: battLevel,
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})
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}
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}
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}()
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case types.ReqTypeMotion:
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// Get battery level from watch
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motionVals, err := dev.Motion()
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if err != nil {
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connErr(conn, req.Type, err, "Error getting motion values")
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break
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}
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// Encode battery level to connection
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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Value: motionVals,
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})
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case types.ReqTypeWatchMotion:
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motionValCh, cancel, err := dev.WatchMotion()
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if err != nil {
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connErr(conn, req.Type, err, "Error getting heart rate channel")
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break
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}
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reqID := uuid.New().String()
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go func() {
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done.Create(reqID)
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// For every motion event
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for motionVals := range motionValCh {
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select {
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case <-done[reqID]:
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// Stop notifications if done signal received
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cancel()
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done.Remove(reqID)
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return
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default:
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// Encode response to connection if no done signal received
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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ID: reqID,
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Value: motionVals,
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})
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}
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}
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}()
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case types.ReqTypeStepCount:
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// Get battery level from watch
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stepCount, err := dev.StepCount()
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if err != nil {
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connErr(conn, req.Type, err, "Error getting step count")
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break
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}
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// Encode battery level to connection
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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Value: stepCount,
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})
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case types.ReqTypeWatchStepCount:
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stepCountCh, cancel, err := dev.WatchStepCount()
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if err != nil {
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connErr(conn, req.Type, err, "Error getting heart rate channel")
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break
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}
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reqID := uuid.New().String()
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go func() {
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done.Create(reqID)
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// For every step count value
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for stepCount := range stepCountCh {
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select {
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case <-done[reqID]:
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// Stop notifications if done signal received
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cancel()
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done.Remove(reqID)
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return
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default:
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// Encode response to connection if no done signal received
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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ID: reqID,
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Value: stepCount,
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})
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}
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}
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}()
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case types.ReqTypeFwVersion:
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// Get firmware version from watch
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version, err := dev.Version()
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if err != nil {
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connErr(conn, req.Type, err, "Error getting firmware version")
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break
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}
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// Encode version to connection
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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Value: version,
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})
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case types.ReqTypeBtAddress:
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// Encode bluetooth address to connection
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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Value: dev.Address(),
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})
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case types.ReqTypeNotify:
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// If no data, return error
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if req.Data == nil {
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connErr(conn, req.Type, nil, "Data required for notify request")
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break
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}
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var reqData types.ReqDataNotify
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// Decode data map to notify request data
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err = mapstructure.Decode(req.Data, &reqData)
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if err != nil {
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connErr(conn, req.Type, err, "Error decoding request data")
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break
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}
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maps := viper.GetStringSlice("notifs.translit.use")
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translit.Transliterators["custom"] = translit.Map(viper.GetStringSlice("notifs.translit.custom"))
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title := translit.Transliterate(reqData.Title, maps...)
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body := translit.Transliterate(reqData.Body, maps...)
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// Send notification to watch
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err = dev.Notify(title, body)
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if err != nil {
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connErr(conn, req.Type, err, "Error sending notification")
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break
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}
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// Encode empty types.Response to connection
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json.NewEncoder(conn).Encode(types.Response{Type: req.Type})
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case types.ReqTypeSetTime:
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// If no data, return error
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if req.Data == nil {
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connErr(conn, req.Type, nil, "Data required for settime request")
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break
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}
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// Get string from data or return error
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reqTimeStr, ok := req.Data.(string)
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if !ok {
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connErr(conn, req.Type, nil, "Data for settime request must be RFC3339 formatted time string")
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break
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}
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var reqTime time.Time
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if reqTimeStr == "now" {
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reqTime = time.Now()
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} else {
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// Parse time as RFC3339/ISO8601
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reqTime, err = time.Parse(time.RFC3339, reqTimeStr)
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if err != nil {
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connErr(conn, req.Type, err, "Invalid time format. Time string must be formatted as ISO8601 or the word `now`")
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break
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}
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}
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// Set time on watch
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err = dev.SetTime(reqTime)
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if err != nil {
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connErr(conn, req.Type, err, "Error setting device time")
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break
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}
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// Encode empty types.Response to connection
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json.NewEncoder(conn).Encode(types.Response{Type: req.Type})
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case types.ReqTypeFwUpgrade:
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// If no data, return error
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if req.Data == nil {
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connErr(conn, req.Type, nil, "Data required for firmware upgrade request")
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break
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}
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var reqData types.ReqDataFwUpgrade
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// Decode data map to firmware upgrade request data
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err = mapstructure.Decode(req.Data, &reqData)
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if err != nil {
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connErr(conn, req.Type, err, "Error decoding request data")
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break
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}
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// Reset DFU to prepare for next update
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dev.DFU.Reset()
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switch reqData.Type {
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case types.UpgradeTypeArchive:
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// If less than one file, return error
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if len(reqData.Files) < 1 {
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connErr(conn, req.Type, nil, "Archive upgrade requires one file with .zip extension")
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break
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}
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// If file is not zip archive, return error
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if filepath.Ext(reqData.Files[0]) != ".zip" {
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connErr(conn, req.Type, nil, "Archive upgrade file must be a zip archive")
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break
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}
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// Load DFU archive
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err := dev.DFU.LoadArchive(reqData.Files[0])
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if err != nil {
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connErr(conn, req.Type, err, "Error loading archive file")
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break
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}
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case types.UpgradeTypeFiles:
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// If less than two files, return error
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if len(reqData.Files) < 2 {
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connErr(conn, req.Type, nil, "Files upgrade requires two files. First with .dat and second with .bin extension.")
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break
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}
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// If first file is not init packet, return error
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if filepath.Ext(reqData.Files[0]) != ".dat" {
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connErr(conn, req.Type, nil, "First file must be a .dat file")
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break
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}
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// If second file is not firmware image, return error
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if filepath.Ext(reqData.Files[1]) != ".bin" {
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connErr(conn, req.Type, nil, "Second file must be a .bin file")
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break
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}
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// Load individual DFU files
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err := dev.DFU.LoadFiles(reqData.Files[0], reqData.Files[1])
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if err != nil {
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connErr(conn, req.Type, err, "Error loading firmware files")
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break
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}
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}
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go func() {
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// Get progress
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progress := dev.DFU.Progress()
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// For every progress event
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for event := range progress {
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// Encode event on connection
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json.NewEncoder(conn).Encode(types.Response{
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Type: req.Type,
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Value: event,
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})
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}
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firmwareUpdating = false
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}()
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// Set firmwareUpdating
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firmwareUpdating = true
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// Start DFU
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err = dev.DFU.Start()
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if err != nil {
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connErr(conn, req.Type, err, "Error performing upgrade")
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firmwareUpdating = false
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break
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}
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firmwareUpdating = false
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case types.ReqTypeFS:
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if fs == nil {
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connErr(conn, req.Type, nil, "BLE filesystem is not available")
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break
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}
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// If no data, return error
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if req.Data == nil {
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connErr(conn, req.Type, nil, "Data required for firmware upgrade request")
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break
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}
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var reqData types.ReqDataFS
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// Decode data map to firmware upgrade request data
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err = mapstructure.Decode(req.Data, &reqData)
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if err != nil {
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connErr(conn, req.Type, err, "Error decoding request data")
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break
|
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}
|
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switch reqData.Type {
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case types.FSTypeDelete:
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for _, file := range reqData.Files {
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err := fs.Remove(file)
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if err != nil {
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connErr(conn, req.Type, err, "Error removing file")
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break
|
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}
|
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}
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case types.FSTypeMove:
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if len(reqData.Files) != 2 {
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connErr(conn, req.Type, nil, "Move FS command requires an old path and new path in the files list")
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break
|
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}
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err := fs.Rename(reqData.Files[0], reqData.Files[1])
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if err != nil {
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connErr(conn, req.Type, err, "Error moving file")
|
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break
|
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}
|
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case types.FSTypeMkdir:
|
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for _, file := range reqData.Files {
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err := fs.Mkdir(file)
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if err != nil {
|
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connErr(conn, req.Type, err, "Error creating directory")
|
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break
|
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}
|
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}
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case types.FSTypeList:
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if len(reqData.Files) != 1 {
|
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connErr(conn, req.Type, nil, "List FS command requires a path to list in the files list")
|
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break
|
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}
|
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entries, err := fs.ReadDir(reqData.Files[0])
|
|
if err != nil {
|
|
connErr(conn, req.Type, err, "Error reading directory")
|
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break
|
|
}
|
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var out []types.FileInfo
|
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for _, entry := range entries {
|
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info, err := entry.Info()
|
|
if err != nil {
|
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connErr(conn, req.Type, err, "Error getting file info")
|
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break
|
|
}
|
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out = append(out, types.FileInfo{
|
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Name: info.Name(),
|
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Size: info.Size(),
|
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IsDir: info.IsDir(),
|
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})
|
|
}
|
|
json.NewEncoder(conn).Encode(types.Response{
|
|
Type: req.Type,
|
|
Value: out,
|
|
})
|
|
case types.FSTypeWrite:
|
|
if len(reqData.Files) != 1 {
|
|
connErr(conn, req.Type, nil, "Write FS command requires a path to the file to write")
|
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break
|
|
}
|
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file, err := fs.Create(reqData.Files[0], uint32(len(reqData.Data)))
|
|
if err != nil {
|
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connErr(conn, req.Type, err, "Error creating file")
|
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break
|
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}
|
|
_, err = file.WriteString(reqData.Data)
|
|
if err != nil {
|
|
connErr(conn, req.Type, err, "Error writing to file")
|
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break
|
|
}
|
|
json.NewEncoder(conn).Encode(types.Response{Type: req.Type})
|
|
case types.FSTypeRead:
|
|
if len(reqData.Files) != 1 {
|
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connErr(conn, req.Type, nil, "Read FS command requires a path to the file to read")
|
|
break
|
|
}
|
|
file, err := fs.Open(reqData.Files[0])
|
|
if err != nil {
|
|
connErr(conn, req.Type, err, "Error opening file")
|
|
break
|
|
}
|
|
data, err := io.ReadAll(file)
|
|
if err != nil {
|
|
connErr(conn, req.Type, err, "Error reading from file")
|
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break
|
|
}
|
|
json.NewEncoder(conn).Encode(types.Response{
|
|
Type: req.Type,
|
|
Value: string(data),
|
|
})
|
|
}
|
|
case types.ReqTypeCancel:
|
|
if req.Data == nil {
|
|
connErr(conn, req.Type, nil, "No data provided. Cancel request requires request ID string as data.")
|
|
continue
|
|
}
|
|
reqID, ok := req.Data.(string)
|
|
if !ok {
|
|
connErr(conn, req.Type, nil, "Invalid data. Cancel request required request ID string as data.")
|
|
}
|
|
// Stop notifications
|
|
done.Done(reqID)
|
|
json.NewEncoder(conn).Encode(types.Response{Type: req.Type})
|
|
default:
|
|
connErr(conn, req.Type, nil, fmt.Sprintf("Unknown request type %d", req.Type))
|
|
}
|
|
}
|
|
}
|
|
|
|
func connErr(conn net.Conn, resType int, err error, msg string) {
|
|
var res types.Response
|
|
// If error exists, add to types.Response, otherwise don't
|
|
if err != nil {
|
|
log.Error().Err(err).Msg(msg)
|
|
res = types.Response{Message: fmt.Sprintf("%s: %s", msg, err)}
|
|
} else {
|
|
log.Error().Msg(msg)
|
|
res = types.Response{Message: msg, Type: resType}
|
|
}
|
|
res.Error = true
|
|
|
|
// Encode error to connection
|
|
json.NewEncoder(conn).Encode(res)
|
|
}
|