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package gateway
import (
"fmt"
"github.com/42wim/matterbridge/bridge"
"github.com/42wim/matterbridge/bridge/config"
log "github.com/Sirupsen/logrus"
"strings"
"time"
)
type Gateway struct {
*config.Config
MyConfig *config.Gateway
Bridges map[string]*bridge.Bridge
Channels map[string]*config.ChannelInfo
ChannelOptions map[string]config.ChannelOptions
Names map[string]bool
Name string
Message chan config.Message
DestChannelFunc func(msg *config.Message, dest bridge.Bridge) []config.ChannelInfo
}
func New(cfg *config.Config) *Gateway {
gw := &Gateway{}
gw.Config = cfg
gw.Channels = make(map[string]*config.ChannelInfo)
gw.Message = make(chan config.Message)
gw.Bridges = make(map[string]*bridge.Bridge)
gw.Names = make(map[string]bool)
gw.DestChannelFunc = gw.getDestChannel
return gw
}
func (gw *Gateway) AddBridge(cfg *config.Bridge) error {
for _, br := range gw.Bridges {
if br.Account == cfg.Account {
gw.mapChannelsToBridge(br)
err := br.JoinChannels()
if err != nil {
return fmt.Errorf("Bridge %s failed to join channel: %v", br.Account, err)
}
return nil
}
}
log.Infof("Starting bridge: %s ", cfg.Account)
br := bridge.New(gw.Config, cfg, gw.Message)
gw.mapChannelsToBridge(br)
gw.Bridges[cfg.Account] = br
err := br.Connect()
if err != nil {
return fmt.Errorf("Bridge %s failed to start: %v", br.Account, err)
}
err = br.JoinChannels()
if err != nil {
return fmt.Errorf("Bridge %s failed to join channel: %v", br.Account, err)
}
return nil
}
func (gw *Gateway) AddConfig(cfg *config.Gateway) error {
if gw.Names[cfg.Name] {
return fmt.Errorf("Gateway with name %s already exists", cfg.Name)
}
if cfg.Name == "" {
return fmt.Errorf("%s", "Gateway without name found")
}
log.Infof("Starting gateway: %s", cfg.Name)
gw.Names[cfg.Name] = true
gw.Name = cfg.Name
gw.MyConfig = cfg
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
}
}
return nil
}
func (gw *Gateway) mapChannelsToBridge(br *bridge.Bridge) {
for ID, channel := range gw.Channels {
if br.Account == channel.Account {
br.Channels[ID] = *channel
}
}
}
func (gw *Gateway) Start() error {
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.Joined = make(map[string]bool)
br.JoinChannels()
}
func (gw *Gateway) mapChannels() error {
for _, br := range append(gw.MyConfig.Out, gw.MyConfig.InOut...) {
ID := br.Channel + br.Account
_, ok := gw.Channels[ID]
if !ok {
channel := &config.ChannelInfo{Name: br.Channel, Direction: "out", ID: ID, Options: br.Options, Account: br.Account,
GID: make(map[string]bool), SameChannel: make(map[string]bool)}
channel.GID[gw.Name] = true
channel.SameChannel[gw.Name] = br.SameChannel
gw.Channels[channel.ID] = channel
}
gw.Channels[ID].GID[gw.Name] = true
gw.Channels[ID].SameChannel[gw.Name] = br.SameChannel
}
for _, br := range append(gw.MyConfig.In, gw.MyConfig.InOut...) {
ID := br.Channel + br.Account
_, ok := gw.Channels[ID]
if !ok {
channel := &config.ChannelInfo{Name: br.Channel, Direction: "in", ID: ID, Options: br.Options, Account: br.Account,
GID: make(map[string]bool), SameChannel: make(map[string]bool)}
channel.GID[gw.Name] = true
channel.SameChannel[gw.Name] = br.SameChannel
gw.Channels[channel.ID] = channel
}
gw.Channels[ID].GID[gw.Name] = true
gw.Channels[ID].SameChannel[gw.Name] = br.SameChannel
}
return nil
}
func (gw *Gateway) getDestChannel(msg *config.Message, dest bridge.Bridge) []config.ChannelInfo {
var channels []config.ChannelInfo
for _, channel := range gw.Channels {
if _, ok := gw.Channels[getChannelID(*msg)]; !ok {
continue
}
if channel.Direction == "out" && channel.Account == dest.Account && gw.validGatewayDest(*msg, channel) {
channels = append(channels, *channel)
}
}
return channels
}
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
}
// broadcast to every out channel (irc QUIT)
if msg.Channel == "" && msg.Event != config.EVENT_JOIN_LEAVE {
log.Debug("empty channel")
return
}
originchannel := msg.Channel
for _, channel := range gw.DestChannelFunc(&msg, *dest) {
// do not send to ourself
if channel.ID == getChannelID(msg) {
continue
}
log.Debugf("Sending %#v from %s (%s) to %s (%s)", msg, msg.Account, originchannel, dest.Account, channel.Name)
msg.Channel = channel.Name
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 {
if msg.Text == "" {
log.Debugf("ignoring empty message %#v from %s", msg, msg.Account)
return true
}
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) 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
}
func getChannelID(msg config.Message) string {
return msg.Channel + msg.Account
}
func (gw *Gateway) validGatewayDest(msg config.Message, channel *config.ChannelInfo) bool {
GIDmap := gw.Channels[getChannelID(msg)].GID
// check if we are running a samechannelgateway.
// if it is and the channel name matches it's ok, otherwise we shouldn't use this channel.
for k, _ := range GIDmap {
if channel.SameChannel[k] == true {
if msg.Channel == channel.Name {
return true
} else {
return false
}
}
}
// check if we are in the correct gateway
for k, _ := range GIDmap {
if channel.GID[k] == true {
return true
}
}
return false
}
|
