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package gateway
import (
"fmt"
"github.com/42wim/matterbridge/bridge"
"github.com/42wim/matterbridge/bridge/config"
log "github.com/Sirupsen/logrus"
"reflect"
"strings"
"time"
)
type Gateway struct {
*config.Config
MyConfig *config.Gateway
Bridges map[string]*bridge.Bridge
ChannelsOut map[string][]string
ChannelsIn map[string][]string
ChannelOptions map[string]config.ChannelOptions
Name string
Message chan config.Message
DestChannelFunc func(msg *config.Message, dest string) []string
}
func New(cfg *config.Config, gateway *config.Gateway) *Gateway {
gw := &Gateway{}
gw.Name = gateway.Name
gw.Config = cfg
gw.MyConfig = gateway
gw.Message = make(chan config.Message)
gw.Bridges = make(map[string]*bridge.Bridge)
gw.DestChannelFunc = gw.getDestChannel
return gw
}
func (gw *Gateway) AddBridge(cfg *config.Bridge) error {
for _, br := range gw.Bridges {
if br.Account == cfg.Account {
return nil
}
}
log.Infof("Starting bridge: %s ", cfg.Account)
br := bridge.New(gw.Config, cfg, gw.Message)
gw.mapChannelsToBridge(br, gw.ChannelsOut)
gw.mapChannelsToBridge(br, gw.ChannelsIn)
gw.Bridges[cfg.Account] = br
err := br.Connect()
if err != nil {
return fmt.Errorf("Bridge %s failed to start: %v", br.Account, err)
}
br.JoinChannels()
return nil
}
func (gw *Gateway) mapChannelsToBridge(br *bridge.Bridge, cMap map[string][]string) {
for _, channel := range cMap[br.Account] {
if _, ok := gw.ChannelOptions[br.Account+channel]; ok {
br.ChannelsOut[channel] = gw.ChannelOptions[br.Account+channel]
} else {
br.ChannelsOut[channel] = config.ChannelOptions{}
}
}
}
func (gw *Gateway) Start() error {
gw.mapChannels()
for _, br := range append(gw.MyConfig.In, append(gw.MyConfig.InOut, gw.MyConfig.Out...)...) {
err := gw.AddBridge(&br)
if err != nil {
return err
}
}
go gw.handleReceive()
return nil
}
func (gw *Gateway) handleReceive() {
for {
select {
case msg := <-gw.Message:
if msg.Event == config.EVENT_FAILURE {
for _, br := range gw.Bridges {
if msg.Account == br.Account {
go gw.reconnectBridge(br)
}
}
}
if !gw.ignoreMessage(&msg) {
msg.Timestamp = time.Now()
for _, br := range gw.Bridges {
gw.handleMessage(msg, br)
}
}
}
}
}
func (gw *Gateway) reconnectBridge(br *bridge.Bridge) {
br.Disconnect()
time.Sleep(time.Second * 5)
RECONNECT:
log.Infof("Reconnecting %s", br.Account)
err := br.Connect()
if err != nil {
log.Errorf("Reconnection failed: %s. Trying again in 60 seconds", err)
time.Sleep(time.Second * 60)
goto RECONNECT
}
br.JoinChannels()
}
func (gw *Gateway) mapChannels() error {
options := make(map[string]config.ChannelOptions)
m := make(map[string][]string)
for _, br := range gw.MyConfig.Out {
m[br.Account] = append(m[br.Account], br.Channel)
options[br.Account+br.Channel] = br.Options
}
gw.ChannelsOut = m
m = nil
m = make(map[string][]string)
for _, br := range gw.MyConfig.In {
m[br.Account] = append(m[br.Account], br.Channel)
options[br.Account+br.Channel] = br.Options
}
gw.ChannelsIn = m
for _, br := range gw.MyConfig.InOut {
gw.ChannelsIn[br.Account] = append(gw.ChannelsIn[br.Account], br.Channel)
gw.ChannelsOut[br.Account] = append(gw.ChannelsOut[br.Account], br.Channel)
options[br.Account+br.Channel] = br.Options
}
gw.ChannelOptions = options
return nil
}
func (gw *Gateway) getDestChannel(msg *config.Message, dest string) []string {
channels := gw.ChannelsIn[msg.Account]
// broadcast to every out channel (irc QUIT)
if msg.Event == config.EVENT_JOIN_LEAVE && msg.Channel == "" {
return gw.ChannelsOut[dest]
}
for _, channel := range channels {
if channel == msg.Channel {
return gw.ChannelsOut[dest]
}
}
return []string{}
}
func (gw *Gateway) handleMessage(msg config.Message, dest *bridge.Bridge) {
// only relay join/part when configged
if msg.Event == config.EVENT_JOIN_LEAVE && !gw.Bridges[dest.Account].Config.ShowJoinPart {
return
}
originchannel := msg.Channel
channels := gw.DestChannelFunc(&msg, dest.Account)
for _, channel := range channels {
// do not send the message to the bridge we come from if also the channel is the same
if msg.Account == dest.Account && channel == originchannel {
continue
}
msg.Channel = channel
if msg.Channel == "" {
log.Debug("empty channel")
return
}
log.Debugf("Sending %#v from %s (%s) to %s (%s)", msg, msg.Account, originchannel, dest.Account, channel)
gw.modifyUsername(&msg, dest)
// for api we need originchannel as channel
if dest.Protocol == "api" {
msg.Channel = originchannel
}
err := dest.Send(msg)
if err != nil {
fmt.Println(err)
}
}
}
func (gw *Gateway) ignoreMessage(msg *config.Message) bool {
for _, entry := range strings.Fields(gw.Bridges[msg.Account].Config.IgnoreNicks) {
if msg.Username == entry {
log.Debugf("ignoring %s from %s", msg.Username, msg.Account)
return true
}
}
return false
}
func (gw *Gateway) modifyMessage(msg *config.Message, dest *bridge.Bridge) {
val := reflect.ValueOf(gw.Config).Elem()
for i := 0; i < val.NumField(); i++ {
typeField := val.Type().Field(i)
// look for the protocol map (both lowercase)
if strings.ToLower(typeField.Name) == dest.Protocol {
// get the Protocol struct from the map
protoCfg := val.Field(i).MapIndex(reflect.ValueOf(dest.Name))
//config.SetNickFormat(msg, protoCfg.Interface().(config.Protocol))
val.Field(i).SetMapIndex(reflect.ValueOf(dest.Name), protoCfg)
break
}
}
}
func (gw *Gateway) modifyUsername(msg *config.Message, dest *bridge.Bridge) {
br := gw.Bridges[msg.Account]
msg.Protocol = br.Protocol
nick := gw.Config.General.RemoteNickFormat
if nick == "" {
nick = dest.Config.RemoteNickFormat
}
nick = strings.Replace(nick, "{NICK}", msg.Username, -1)
nick = strings.Replace(nick, "{BRIDGE}", br.Name, -1)
nick = strings.Replace(nick, "{PROTOCOL}", br.Protocol, -1)
msg.Username = nick
}
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