mirror of
https://github.com/cwinfo/matterbridge.git
synced 2024-12-25 18:45:41 +00:00
348 lines
9.0 KiB
Go
348 lines
9.0 KiB
Go
package gateway
|
||
|
||
import (
|
||
"fmt"
|
||
"github.com/42wim/matterbridge/bridge"
|
||
"github.com/42wim/matterbridge/bridge/config"
|
||
log "github.com/Sirupsen/logrus"
|
||
"github.com/peterhellberg/emojilib"
|
||
// "github.com/davecgh/go-spew/spew"
|
||
"regexp"
|
||
"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 msg.Event == config.EVENT_REJOIN_CHANNELS {
|
||
for _, br := range gw.Bridges {
|
||
if msg.Account == br.Account {
|
||
br.Joined = make(map[string]bool)
|
||
br.JoinChannels()
|
||
}
|
||
}
|
||
continue
|
||
}
|
||
if !gw.ignoreMessage(&msg) {
|
||
msg.Timestamp = time.Now()
|
||
gw.modifyMessage(&msg)
|
||
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...) {
|
||
if isApi(br.Account) {
|
||
br.Channel = "api"
|
||
}
|
||
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...) {
|
||
if isApi(br.Account) {
|
||
br.Channel = "api"
|
||
}
|
||
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
|
||
}
|
||
// add gateway to message
|
||
gw.validGatewayDest(msg, channel)
|
||
|
||
// do samechannelgateway logic
|
||
if channel.SameChannel[msg.Gateway] {
|
||
if msg.Channel == channel.Name && msg.Account != dest.Account {
|
||
channels = append(channels, *channel)
|
||
}
|
||
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
|
||
origmsg := msg
|
||
for _, channel := range gw.DestChannelFunc(&msg, *dest) {
|
||
// 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
|
||
gw.modifyAvatar(&msg, dest)
|
||
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
|
||
}
|
||
}
|
||
// 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) {
|
||
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)
|
||
msg.Username = nick
|
||
}
|
||
|
||
func (gw *Gateway) modifyAvatar(msg *config.Message, dest *bridge.Bridge) {
|
||
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
|
||
}
|
||
}
|
||
|
||
func (gw *Gateway) modifyMessage(msg *config.Message) {
|
||
// replace :emoji: to unicode
|
||
msg.Text = emojilib.Replace(msg.Text)
|
||
}
|
||
|
||
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
|
||
|
||
// gateway is specified in message (probably from api)
|
||
if msg.Gateway != "" {
|
||
return channel.GID[msg.Gateway]
|
||
}
|
||
|
||
// 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 {
|
||
// add the gateway to our message
|
||
msg.Gateway = k
|
||
return true
|
||
} else {
|
||
return false
|
||
}
|
||
}
|
||
}
|
||
// check if we are in the correct gateway
|
||
for k, _ := range GIDmap {
|
||
if channel.GID[k] == true {
|
||
// add the gateway to our message
|
||
msg.Gateway = k
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func isApi(account string) bool {
|
||
if strings.HasPrefix(account, "api.") {
|
||
return true
|
||
}
|
||
return false
|
||
}
|