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|
package gateway
import (
"fmt"
"github.com/42wim/matterbridge/bridge"
"github.com/42wim/matterbridge/bridge/config"
log "github.com/Sirupsen/logrus"
// "github.com/davecgh/go-spew/spew"
"github.com/peterhellberg/emojilib"
"regexp"
"strings"
"time"
)
type Gateway struct {
*config.Config
Router *Router
MyConfig *config.Gateway
Bridges map[string]*bridge.Bridge
Channels map[string]*config.ChannelInfo
ChannelOptions map[string]config.ChannelOptions
Message chan config.Message
Name string
}
func New(cfg config.Gateway, r *Router) *Gateway {
gw := &Gateway{Channels: make(map[string]*config.ChannelInfo), Message: r.Message,
Router: r, Bridges: make(map[string]*bridge.Bridge), Config: r.Config}
gw.AddConfig(&cfg)
return gw
}
func (gw *Gateway) AddBridge(cfg *config.Bridge) error {
br := gw.Router.getBridge(cfg.Account)
if br == nil {
br = bridge.New(gw.Config, cfg, gw.Message)
}
gw.mapChannelsToBridge(br)
gw.Bridges[cfg.Account] = br
return nil
}
func (gw *Gateway) AddConfig(cfg *config.Gateway) error {
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) 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) mapChannelConfig(cfg []config.Bridge, direction string) {
for _, br := range cfg {
if isApi(br.Account) {
br.Channel = "api"
}
ID := br.Channel + br.Account
if _, ok := gw.Channels[ID]; !ok {
channel := &config.ChannelInfo{Name: br.Channel, Direction: direction, ID: ID, Options: br.Options, Account: br.Account,
SameChannel: make(map[string]bool)}
channel.SameChannel[gw.Name] = br.SameChannel
gw.Channels[channel.ID] = channel
} else {
// if we already have a key and it's not our current direction it means we have a bidirectional inout
if gw.Channels[ID].Direction != direction {
gw.Channels[ID].Direction = "inout"
}
}
gw.Channels[ID].SameChannel[gw.Name] = br.SameChannel
}
}
func (gw *Gateway) mapChannels() error {
gw.mapChannelConfig(gw.MyConfig.In, "in")
gw.mapChannelConfig(gw.MyConfig.Out, "out")
gw.mapChannelConfig(gw.MyConfig.InOut, "inout")
return nil
}
func (gw *Gateway) getDestChannel(msg *config.Message, dest bridge.Bridge) []config.ChannelInfo {
var channels []config.ChannelInfo
// if source channel is in only, do nothing
for _, channel := range gw.Channels {
// lookup the channel from the message
if channel.ID == getChannelID(*msg) {
// we only have destinations if the original message is from an "in" (sending) channel
if !strings.Contains(channel.Direction, "in") {
return channels
}
continue
}
}
for _, channel := range gw.Channels {
if _, ok := gw.Channels[getChannelID(*msg)]; !ok {
continue
}
// do samechannelgateway logic
if channel.SameChannel[msg.Gateway] {
if msg.Channel == channel.Name && msg.Account != dest.Account {
channels = append(channels, *channel)
}
continue
}
if strings.Contains(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
origmsg := msg
channels := gw.getDestChannel(&msg, *dest)
for _, channel := range channels {
// do not send to ourself
if channel.ID == getChannelID(origmsg) {
continue
}
log.Debugf("Sending %#v from %s (%s) to %s (%s)", msg, msg.Account, originchannel, dest.Account, channel.Name)
msg.Channel = channel.Name
msg.Avatar = gw.modifyAvatar(origmsg, dest)
msg.Username = gw.modifyUsername(origmsg, 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 gw.Router.getGatewayName(getChannelID(*msg)) != gw.Name {
return true
}
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
}
}
// TODO do not compile regexps everytime
for _, entry := range strings.Fields(gw.Bridges[msg.Account].Config.IgnoreMessages) {
if entry != "" {
re, err := regexp.Compile(entry)
if err != nil {
log.Errorf("incorrect regexp %s for %s", entry, msg.Account)
continue
}
if re.MatchString(msg.Text) {
log.Debugf("matching %s. ignoring %s from %s", entry, msg.Text, msg.Account)
return true
}
}
}
return false
}
func (gw *Gateway) modifyUsername(msg config.Message, dest *bridge.Bridge) string {
br := gw.Bridges[msg.Account]
msg.Protocol = br.Protocol
nick := gw.Config.General.RemoteNickFormat
if nick == "" {
nick = dest.Config.RemoteNickFormat
}
if len(msg.Username) > 0 {
// fix utf-8 issue #193
i := 0
for index := range msg.Username {
if i == 1 {
i = index
break
}
i++
}
nick = strings.Replace(nick, "{NOPINGNICK}", msg.Username[:i]+""+msg.Username[i:], -1)
}
nick = strings.Replace(nick, "{NICK}", msg.Username, -1)
nick = strings.Replace(nick, "{BRIDGE}", br.Name, -1)
nick = strings.Replace(nick, "{PROTOCOL}", br.Protocol, -1)
return nick
}
func (gw *Gateway) modifyAvatar(msg config.Message, dest *bridge.Bridge) string {
iconurl := gw.Config.General.IconURL
if iconurl == "" {
iconurl = dest.Config.IconURL
}
iconurl = strings.Replace(iconurl, "{NICK}", msg.Username, -1)
if msg.Avatar == "" {
msg.Avatar = iconurl
}
return msg.Avatar
}
func (gw *Gateway) modifyMessage(msg *config.Message) {
// replace :emoji: to unicode
msg.Text = emojilib.Replace(msg.Text)
msg.Gateway = gw.Router.getGatewayName(getChannelID(*msg))
}
func getChannelID(msg config.Message) string {
return msg.Channel + msg.Account
}
func (gw *Gateway) validGatewayDest(msg *config.Message, channel *config.ChannelInfo) bool {
return msg.Gateway == gw.Name
}
func isApi(account string) bool {
return strings.HasPrefix(account, "api.")
}
|
