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package gateway
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import (
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"fmt"
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"github.com/42wim/matterbridge/bridge"
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"github.com/42wim/matterbridge/bridge/config"
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log "github.com/Sirupsen/logrus"
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"reflect"
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"strings"
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)
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type Gateway struct {
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*config.Config
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MyConfig *config.Gateway
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//Bridges []*bridge.Bridge
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Bridges map[string]*bridge.Bridge
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ChannelsOut map[string][]string
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ChannelsIn map[string][]string
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ignoreNicks map[string][]string
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Name string
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Message chan config.Message
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}
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func New(cfg *config.Config, gateway *config.Gateway) *Gateway {
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gw := &Gateway{}
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gw.Name = gateway.Name
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gw.Config = cfg
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gw.MyConfig = gateway
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gw.Message = make(chan config.Message)
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gw.Bridges = make(map[string]*bridge.Bridge)
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return gw
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}
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func (gw *Gateway) AddBridge(cfg *config.Bridge) error {
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for _, br := range gw.Bridges {
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if br.Account == cfg.Account {
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return nil
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}
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}
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log.Infof("Starting bridge: %s ", cfg.Account)
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br := bridge.New(gw.Config, cfg, gw.Message)
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gw.Bridges[cfg.Account] = br
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err := br.Connect()
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if err != nil {
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return fmt.Errorf("Bridge %s failed to start: %v", br.Account, err)
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}
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exists := make(map[string]bool)
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for _, channel := range append(gw.ChannelsOut[br.Account], gw.ChannelsIn[br.Account]...) {
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if !exists[br.Account+channel] {
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log.Infof("%s: joining %s", br.Account, channel)
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br.JoinChannel(channel)
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exists[br.Account+channel] = true
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}
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}
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return nil
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}
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func (gw *Gateway) Start() error {
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gw.mapChannels()
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for _, br := range append(gw.MyConfig.In, append(gw.MyConfig.InOut, gw.MyConfig.Out...)...) {
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err := gw.AddBridge(&br)
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if err != nil {
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return err
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}
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}
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//TODO fix mapIgnores
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//gw.mapIgnores()
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go gw.handleReceive()
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return nil
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}
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func (gw *Gateway) handleReceive() {
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for {
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select {
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case msg := <-gw.Message:
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for _, br := range gw.Bridges {
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gw.handleMessage(msg, br)
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}
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}
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}
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}
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func (gw *Gateway) mapChannels() error {
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m := make(map[string][]string)
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for _, br := range gw.MyConfig.Out {
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m[br.Account] = append(m[br.Account], br.Channel)
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}
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gw.ChannelsOut = m
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m = nil
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m = make(map[string][]string)
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for _, br := range gw.MyConfig.In {
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m[br.Account] = append(m[br.Account], br.Channel)
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}
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gw.ChannelsIn = m
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for _, br := range gw.MyConfig.InOut {
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gw.ChannelsIn[br.Account] = append(gw.ChannelsIn[br.Account], br.Channel)
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gw.ChannelsOut[br.Account] = append(gw.ChannelsOut[br.Account], br.Channel)
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}
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return nil
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}
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func (gw *Gateway) mapIgnores() {
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m := make(map[string][]string)
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for _, br := range gw.MyConfig.In {
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accInfo := strings.Split(br.Account, ".")
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m[br.Account] = strings.Fields(gw.Config.IRC[accInfo[1]].IgnoreNicks)
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}
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gw.ignoreNicks = m
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}
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func (gw *Gateway) getDestChannel(msg *config.Message, dest string) []string {
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channels := gw.ChannelsIn[msg.Account]
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// broadcast to every out channel (irc QUIT)
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if msg.Event == config.EVENT_JOIN_LEAVE && msg.Channel == "" {
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return gw.ChannelsOut[dest]
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}
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for _, channel := range channels {
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if channel == msg.Channel {
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return gw.ChannelsOut[dest]
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}
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}
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return []string{}
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}
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func (gw *Gateway) handleMessage(msg config.Message, dest *bridge.Bridge) {
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if gw.ignoreMessage(&msg) {
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return
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}
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// only relay join/part when configged
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if msg.Event == config.EVENT_JOIN_LEAVE && !gw.Bridges[dest.Account].Config.ShowJoinPart {
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return
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}
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originchannel := msg.Channel
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channels := gw.getDestChannel(&msg, dest.Account)
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for _, channel := range channels {
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// do not send the message to the bridge we come from if also the channel is the same
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if msg.Account == dest.Account && channel == originchannel {
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continue
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}
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msg.Channel = channel
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if msg.Channel == "" {
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log.Debug("empty channel")
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return
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}
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log.Debugf("Sending %#v from %s (%s) to %s (%s)", msg, msg.Account, originchannel, dest.Account, channel)
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gw.modifyUsername(&msg, dest)
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err := dest.Send(msg)
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if err != nil {
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fmt.Println(err)
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}
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}
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}
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func (gw *Gateway) ignoreMessage(msg *config.Message) bool {
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// should we discard messages ?
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for _, entry := range gw.ignoreNicks[msg.Account] {
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if msg.Username == entry {
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return true
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}
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}
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return false
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}
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func (gw *Gateway) modifyMessage(msg *config.Message, dest *bridge.Bridge) {
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val := reflect.ValueOf(gw.Config).Elem()
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for i := 0; i < val.NumField(); i++ {
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typeField := val.Type().Field(i)
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// look for the protocol map (both lowercase)
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if strings.ToLower(typeField.Name) == dest.Protocol {
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// get the Protocol struct from the map
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protoCfg := val.Field(i).MapIndex(reflect.ValueOf(dest.Name))
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//config.SetNickFormat(msg, protoCfg.Interface().(config.Protocol))
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val.Field(i).SetMapIndex(reflect.ValueOf(dest.Name), protoCfg)
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break
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}
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}
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}
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func (gw *Gateway) modifyUsername(msg *config.Message, dest *bridge.Bridge) {
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br := gw.Bridges[msg.Account]
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nick := dest.Config.RemoteNickFormat
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nick = strings.Replace(nick, "{NICK}", msg.Username, -1)
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nick = strings.Replace(nick, "{BRIDGE}", br.Name, -1)
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nick = strings.Replace(nick, "{PROTOCOL}", br.Protocol, -1)
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msg.Username = nick
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}
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