313 lines
8.4 KiB
Go
313 lines
8.4 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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"net"
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"os"
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"path/filepath"
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"time"
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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/itd/internal/types"
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"go.arsenm.dev/itd/translit"
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)
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func startSocket(dev *infinitime.Device) error {
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// Make socket directory if non-existent
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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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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)
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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) {
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defer conn.Close()
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// If firmware is updating, return error
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if firmwareUpdating {
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connErr(conn, nil, "Firmware update in progress")
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return
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}
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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, err, "Error decoding JSON input")
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continue
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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, 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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Value: heartRate,
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})
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case types.ReqTypeWatchHeartRate:
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heartRateCh, err := dev.WatchHeartRate()
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if err != nil {
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connErr(conn, err, "Error getting heart rate channel")
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break
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}
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go func() {
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for heartRate := range heartRateCh {
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json.NewEncoder(conn).Encode(types.Response{
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Value: heartRate,
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})
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}
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}()
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case types.ReqTypeWatchBattLevel:
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battLevelCh, err := dev.WatchBatteryLevel()
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if err != nil {
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connErr(conn, err, "Error getting heart rate channel")
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break
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}
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go func() {
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for battLevel := range battLevelCh {
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json.NewEncoder(conn).Encode(types.Response{
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Value: battLevel,
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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, 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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Value: battLevel,
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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, err, "Error getting battery level")
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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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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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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, 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, 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.Maps["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, 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{})
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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, 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, 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, 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, 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{})
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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, 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, 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.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, 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, 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, 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, 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, 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, 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, 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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Value: event,
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})
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}
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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, 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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}
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}
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}
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func connErr(conn net.Conn, err error, msg string) {
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var res types.Response
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// If error exists, add to types.Response, otherwise don't
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if err != nil {
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log.Error().Err(err).Msg(msg)
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res = types.Response{Message: fmt.Sprintf("%s: %s", msg, err)}
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} else {
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log.Error().Msg(msg)
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res = types.Response{Message: msg}
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}
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res.Error = true
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// Encode error to connection
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json.NewEncoder(conn).Encode(res)
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}
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