yammerbot/bridge.go

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package main
import (
"crypto/tls"
"fmt"
"log"
"net"
"os"
"os/signal"
"strconv"
"time"
"github.com/bwmarrin/discordgo"
"layeh.com/gumble/gumble"
"layeh.com/gumble/gumbleutil"
)
type BridgeState struct {
ActiveConn chan bool
Connected bool
Client *gumble.Client
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DiscordUsers map[string]bool
MumbleUsers map[string]bool
MumbleUserCount int
DiscordUserCount int
AutoChan chan bool
}
func startBridge(discord *discordgo.Session, discordGID string, discordCID string, config *gumble.Config, mumbleAddr string, mumbleInsecure bool, die chan bool) {
dgv, err := discord.ChannelVoiceJoin(discordGID, discordCID, false, false)
if err != nil {
log.Println(err)
return
}
defer dgv.Speaking(false)
defer dgv.Close()
discord.ShouldReconnectOnError = true
// MUMBLE Setup
m := MumbleDuplex{
Close: make(chan bool),
}
var tlsConfig tls.Config
if mumbleInsecure {
tlsConfig.InsecureSkipVerify = true
}
config.Attach(gumbleutil.Listener{
Connect: mumbleConnect,
UserChange: mumbleUserChange,
})
mumble, err := gumble.DialWithDialer(new(net.Dialer), mumbleAddr, config, &tlsConfig)
if err != nil {
log.Println(err)
return
}
defer mumble.Disconnect()
Bridge.Client = mumble
// Shared Channels
// Shared channels pass PCM information in 10ms chunks [480]int16
var toMumble = mumble.AudioOutgoing()
var toDiscord = make(chan []int16, 100)
log.Println("Mumble Connected")
// Start Passing Between
// Mumble
go m.fromMumbleMixer(toDiscord, die)
det := config.AudioListeners.Attach(m)
//Discord
go discordReceivePCM(dgv, die)
go fromDiscordMixer(toMumble, die)
go discordSendPCM(dgv, toDiscord, die)
c := make(chan os.Signal)
signal.Notify(c, os.Interrupt)
go func() {
ticker := time.NewTicker(500 * time.Millisecond)
for {
<-ticker.C
if mumble.State() != 2 {
log.Println("Lost mumble connection " + strconv.Itoa(int(mumble.State())))
select {
default:
close(die)
case <-die:
//die is already closed
}
select {
default:
close(m.Close)
case <-m.Close:
//m.Close is already closed
}
return
}
}
}()
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//Setup initial discord state
g, err := discord.State.Guild(discordGID)
if err != nil {
log.Println("error finding guild")
panic(err)
}
for _, vs := range g.VoiceStates {
if vs.ChannelID == discordCID {
Bridge.DiscordUserCount = Bridge.DiscordUserCount + 1
u, err := discord.User(vs.UserID)
if err != nil {
log.Println("error looking up username")
Bridge.DiscordUsers[u.Username] = true
Bridge.Client.Self.Channel.Send(fmt.Sprintf("%v has joined Discord channel\n", u.Username), false)
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}
}
}
Bridge.Connected = true
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select {
case sig := <-c:
log.Printf("\nGot %s signal. Terminating Mumble-Bridge\n", sig)
case <-die:
log.Println("\nGot internal die request. Terminating Mumble-Bridge")
dgv.Disconnect()
det.Detach()
close(die)
close(m.Close)
close(toMumble)
Bridge.Connected = false
Bridge.Client = nil
Bridge.MumbleUserCount = 0
Bridge.DiscordUserCount = 0
Bridge.DiscordUsers = make(map[string]bool)
}
}
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func discordStatusUpdate(dg *discordgo.Session, host, port string) {
status := ""
curr := 0
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m, _ := time.ParseDuration("30s")
for {
time.Sleep(3 * time.Second)
resp, err := gumble.Ping(host+":"+port, -1, m)
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if err != nil {
log.Printf("error pinging mumble server %v\n", err)
dg.UpdateListeningStatus("an error pinging mumble")
} else {
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curr = resp.ConnectedUsers
if Bridge.Connected {
curr = curr - 1
}
if curr != Bridge.MumbleUserCount {
Bridge.MumbleUserCount = curr
}
if curr == 0 {
status = ""
} else {
if len(Bridge.MumbleUsers) > 0 {
status = fmt.Sprintf("%v/%v users in Mumble\n", len(Bridge.MumbleUsers), curr)
} else {
status = fmt.Sprintf("%v users in Mumble\n", curr)
}
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}
dg.UpdateListeningStatus(status)
}
}
}
func AutoBridge(s *discordgo.Session) {
log.Println("beginning auto mode")
for {
select {
default:
case <-Bridge.AutoChan:
log.Println("ending automode")
return
}
time.Sleep(3 * time.Second)
if !Bridge.Connected && Bridge.MumbleUserCount > 0 && Bridge.DiscordUserCount > 0 {
log.Println("users detected in mumble and discord, bridging")
die := make(chan bool)
Bridge.ActiveConn = die
go startBridge(s, BridgeConf.GID, BridgeConf.CID, BridgeConf.Config, BridgeConf.MumbleAddr, BridgeConf.MumbleInsecure, die)
}
if Bridge.Connected && Bridge.MumbleUserCount == 0 && Bridge.DiscordUserCount <= 1 {
log.Println("no one online, killing bridge")
Bridge.ActiveConn <- true
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MumbleReset()
DiscordReset()
}
}
}