mirror of
https://github.com/ergochat/ergo.git
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990 lines
33 KiB
Go
990 lines
33 KiB
Go
// Copyright (c) 2012-2014 Jeremy Latt
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// Copyright (c) 2014-2015 Edmund Huber
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// Copyright (c) 2016-2017 Daniel Oaks <daniel@danieloaks.net>
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// released under the MIT license
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package irc
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import (
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"bufio"
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"crypto/tls"
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"fmt"
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"net"
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"net/http"
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_ "net/http/pprof"
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"os"
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"os/signal"
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"strconv"
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"strings"
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"sync"
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"syscall"
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"time"
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"unsafe"
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"github.com/goshuirc/irc-go/ircfmt"
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"github.com/oragono/oragono/irc/caps"
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"github.com/oragono/oragono/irc/connection_limits"
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"github.com/oragono/oragono/irc/logger"
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"github.com/oragono/oragono/irc/modes"
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"github.com/oragono/oragono/irc/sno"
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"github.com/tidwall/buntdb"
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)
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var (
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// common error line to sub values into
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errorMsg = "ERROR :%s\r\n"
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// supportedUserModesString acts as a cache for when we introduce users
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supportedUserModesString = modes.SupportedUserModes.String()
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// supportedChannelModesString acts as a cache for when we introduce users
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supportedChannelModesString = modes.SupportedChannelModes.String()
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// whitelist of caps to serve on the STS-only listener. In particular,
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// never advertise SASL, to discourage people from sending their passwords:
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stsOnlyCaps = caps.NewSet(caps.STS, caps.MessageTags, caps.ServerTime, caps.LabeledResponse, caps.Nope)
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// we only have standard channels for now. TODO: any updates to this
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// will also need to be reflected in CasefoldChannel
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chanTypes = "#"
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)
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// ListenerWrapper wraps a listener so it can be safely reconfigured or stopped
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type ListenerWrapper struct {
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// protects atomic update of config and shouldStop:
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sync.Mutex // tier 1
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listener net.Listener
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config listenerConfig
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shouldStop bool
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}
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// Server is the main Oragono server.
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type Server struct {
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accounts AccountManager
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channels ChannelManager
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channelRegistry ChannelRegistry
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clients ClientManager
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config unsafe.Pointer
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configFilename string
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connectionLimiter connection_limits.Limiter
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connectionThrottler connection_limits.Throttler
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ctime time.Time
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dlines *DLineManager
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helpIndexManager HelpIndexManager
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klines *KLineManager
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listeners map[string]*ListenerWrapper
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logger *logger.Manager
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monitorManager MonitorManager
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name string
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nameCasefolded string
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rehashMutex sync.Mutex // tier 4
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rehashSignal chan os.Signal
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pprofServer *http.Server
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resumeManager ResumeManager
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signals chan os.Signal
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snomasks SnoManager
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store *buntdb.DB
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torLimiter connection_limits.TorLimiter
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whoWas WhoWasList
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stats Stats
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semaphores ServerSemaphores
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}
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var (
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// ServerExitSignals are the signals the server will exit on.
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ServerExitSignals = []os.Signal{
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syscall.SIGINT,
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syscall.SIGTERM,
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syscall.SIGQUIT,
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}
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)
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type clientConn struct {
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Conn net.Conn
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Config listenerConfig
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}
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// NewServer returns a new Oragono server.
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func NewServer(config *Config, logger *logger.Manager) (*Server, error) {
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// initialize data structures
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server := &Server{
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ctime: time.Now().UTC(),
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listeners: make(map[string]*ListenerWrapper),
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logger: logger,
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rehashSignal: make(chan os.Signal, 1),
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signals: make(chan os.Signal, len(ServerExitSignals)),
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}
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server.clients.Initialize()
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server.semaphores.Initialize()
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server.resumeManager.Initialize(server)
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server.whoWas.Initialize(config.Limits.WhowasEntries)
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server.monitorManager.Initialize()
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server.snomasks.Initialize()
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if err := server.applyConfig(config, true); err != nil {
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return nil, err
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}
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// Attempt to clean up when receiving these signals.
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signal.Notify(server.signals, ServerExitSignals...)
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signal.Notify(server.rehashSignal, syscall.SIGHUP)
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return server, nil
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}
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// setISupport sets up our RPL_ISUPPORT reply.
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func (config *Config) generateISupport() (err error) {
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maxTargetsString := strconv.Itoa(maxTargets)
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// add RPL_ISUPPORT tokens
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isupport := &config.Server.isupport
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isupport.Initialize()
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isupport.Add("AWAYLEN", strconv.Itoa(config.Limits.AwayLen))
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isupport.Add("CASEMAPPING", "ascii")
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isupport.Add("CHANLIMIT", fmt.Sprintf("%s:%d", chanTypes, config.Channels.MaxChannelsPerClient))
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isupport.Add("CHANMODES", strings.Join([]string{modes.Modes{modes.BanMask, modes.ExceptMask, modes.InviteMask}.String(), "", modes.Modes{modes.UserLimit, modes.Key}.String(), modes.Modes{modes.InviteOnly, modes.Moderated, modes.NoOutside, modes.OpOnlyTopic, modes.ChanRoleplaying, modes.Secret}.String()}, ","))
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if config.History.Enabled && config.History.ChathistoryMax > 0 {
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isupport.Add("draft/CHATHISTORY", strconv.Itoa(config.History.ChathistoryMax))
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}
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isupport.Add("CHANNELLEN", strconv.Itoa(config.Limits.ChannelLen))
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isupport.Add("CHANTYPES", chanTypes)
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isupport.Add("ELIST", "U")
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isupport.Add("EXCEPTS", "")
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isupport.Add("INVEX", "")
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isupport.Add("KICKLEN", strconv.Itoa(config.Limits.KickLen))
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isupport.Add("MAXLIST", fmt.Sprintf("beI:%s", strconv.Itoa(config.Limits.ChanListModes)))
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isupport.Add("MAXTARGETS", maxTargetsString)
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isupport.Add("MODES", "")
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isupport.Add("MONITOR", strconv.Itoa(config.Limits.MonitorEntries))
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isupport.Add("NETWORK", config.Network.Name)
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isupport.Add("NICKLEN", strconv.Itoa(config.Limits.NickLen))
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isupport.Add("PREFIX", "(qaohv)~&@%+")
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isupport.Add("RPCHAN", "E")
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isupport.Add("RPUSER", "E")
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isupport.Add("STATUSMSG", "~&@%+")
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isupport.Add("TARGMAX", fmt.Sprintf("NAMES:1,LIST:1,KICK:1,WHOIS:1,USERHOST:10,PRIVMSG:%s,TAGMSG:%s,NOTICE:%s,MONITOR:", maxTargetsString, maxTargetsString, maxTargetsString))
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isupport.Add("TOPICLEN", strconv.Itoa(config.Limits.TopicLen))
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isupport.Add("UTF8MAPPING", casemappingName)
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err = isupport.RegenerateCachedReply()
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return
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}
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// Shutdown shuts down the server.
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func (server *Server) Shutdown() {
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//TODO(dan): Make sure we disallow new nicks
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for _, client := range server.clients.AllClients() {
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client.Notice("Server is shutting down")
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}
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if err := server.store.Close(); err != nil {
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server.logger.Error("shutdown", fmt.Sprintln("Could not close datastore:", err))
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}
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}
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// Run starts the server.
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func (server *Server) Run() {
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// defer closing db/store
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defer server.store.Close()
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for {
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select {
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case <-server.signals:
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server.Shutdown()
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return
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case <-server.rehashSignal:
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go func() {
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server.logger.Info("server", "Rehashing due to SIGHUP")
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err := server.rehash()
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if err != nil {
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server.logger.Error("server", fmt.Sprintln("Failed to rehash:", err.Error()))
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}
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}()
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}
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}
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}
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func (server *Server) checkBans(ipaddr net.IP) (banned bool, message string) {
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// check DLINEs
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isBanned, info := server.dlines.CheckIP(ipaddr)
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if isBanned {
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server.logger.Info("localconnect-ip", fmt.Sprintf("Client from %v rejected by d-line", ipaddr))
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return true, info.BanMessage("You are banned from this server (%s)")
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}
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// check connection limits
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err := server.connectionLimiter.AddClient(ipaddr, false)
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if err != nil {
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// too many connections from one client, tell the client and close the connection
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server.logger.Info("localconnect-ip", fmt.Sprintf("Client from %v rejected for connection limit", ipaddr))
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return true, "Too many clients from your network"
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}
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// check connection throttle
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err = server.connectionThrottler.AddClient(ipaddr)
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if err != nil {
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// too many connections too quickly from client, tell them and close the connection
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duration := server.connectionThrottler.BanDuration()
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if duration == 0 {
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return false, ""
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}
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server.dlines.AddIP(ipaddr, duration, server.connectionThrottler.BanMessage(), "Exceeded automated connection throttle", "auto.connection.throttler")
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// they're DLINE'd for 15 minutes or whatever, so we can reset the connection throttle now,
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// and once their temporary DLINE is finished they can fill up the throttler again
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server.connectionThrottler.ResetFor(ipaddr)
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// this might not show up properly on some clients, but our objective here is just to close it out before it has a load impact on us
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server.logger.Info(
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"localconnect-ip",
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fmt.Sprintf("Client from %v exceeded connection throttle, d-lining for %v", ipaddr, duration))
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return true, server.connectionThrottler.BanMessage()
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}
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return false, ""
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}
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func (server *Server) checkTorLimits() (banned bool, message string) {
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switch server.torLimiter.AddClient() {
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case connection_limits.ErrLimitExceeded:
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return true, "Too many clients from the Tor network"
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case connection_limits.ErrThrottleExceeded:
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return true, "Exceeded connection throttle for the Tor network"
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default:
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return false, ""
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}
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}
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//
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// IRC protocol listeners
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//
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// createListener starts a given listener.
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func (server *Server) createListener(addr string, conf listenerConfig, bindMode os.FileMode) (*ListenerWrapper, error) {
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// make listener
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var listener net.Listener
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var err error
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addr = strings.TrimPrefix(addr, "unix:")
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if strings.HasPrefix(addr, "/") {
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// https://stackoverflow.com/a/34881585
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os.Remove(addr)
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listener, err = net.Listen("unix", addr)
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if err == nil && bindMode != 0 {
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os.Chmod(addr, bindMode)
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}
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} else {
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listener, err = net.Listen("tcp", addr)
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}
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if err != nil {
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return nil, err
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}
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// throw our details to the server so we can be modified/killed later
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wrapper := ListenerWrapper{
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listener: listener,
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config: conf,
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shouldStop: false,
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}
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var shouldStop bool
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// setup accept goroutine
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go func() {
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for {
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conn, err := listener.Accept()
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// synchronously access config data:
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wrapper.Lock()
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shouldStop = wrapper.shouldStop
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conf := wrapper.config
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wrapper.Unlock()
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if shouldStop {
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if conn != nil {
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conn.Close()
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}
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listener.Close()
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return
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} else if err == nil {
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if conf.TLSConfig != nil {
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conn = tls.Server(conn, conf.TLSConfig)
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}
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newConn := clientConn{
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Conn: conn,
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Config: conf,
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}
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// hand off the connection
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go server.RunClient(newConn)
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} else {
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server.logger.Error("internal", "accept error", addr, err.Error())
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}
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}
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}()
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return &wrapper, nil
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}
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//
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// server functionality
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//
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func (server *Server) tryRegister(c *Client, session *Session) (exiting bool) {
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// if the session just sent us a RESUME line, try to resume
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if session.resumeDetails != nil {
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session.tryResume()
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return // whether we succeeded or failed, either way `c` is not getting registered
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}
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// try to complete registration normally
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if c.preregNick == "" || !c.HasUsername() || session.capState == caps.NegotiatingState {
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return
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}
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if c.isSTSOnly {
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server.playRegistrationBurst(session)
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return true
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}
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// client MUST send PASS if necessary, or authenticate with SASL if necessary,
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// before completing the other registration commands
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authOutcome := c.isAuthorized(server.Config())
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var quitMessage string
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switch authOutcome {
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case authFailPass:
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quitMessage = c.t("Password incorrect")
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c.Send(nil, server.name, ERR_PASSWDMISMATCH, "*", quitMessage)
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case authFailSaslRequired, authFailTorSaslRequired:
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quitMessage = c.t("You must log in with SASL to join this server")
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c.Send(nil, c.server.name, "FAIL", "*", "ACCOUNT_REQUIRED", quitMessage)
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}
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if authOutcome != authSuccess {
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c.Quit(quitMessage, nil)
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return true
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}
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rb := NewResponseBuffer(session)
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nickAssigned := performNickChange(server, c, c, session, c.preregNick, rb)
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rb.Send(true)
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if !nickAssigned {
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c.preregNick = ""
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return
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}
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// check KLINEs
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isBanned, info := server.klines.CheckMasks(c.AllNickmasks()...)
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if isBanned {
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c.Quit(info.BanMessage(c.t("You are banned from this server (%s)")), nil)
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return true
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}
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if session.client != c {
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// reattached, bail out.
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// we'll play the reg burst later, on the new goroutine associated with
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// (thisSession, otherClient). This is to avoid having to transfer state
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// like nickname, hostname, etc. to show the correct values in the reg burst.
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return
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}
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// registration has succeeded:
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c.SetRegistered()
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// count new user in statistics
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server.stats.Register()
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server.monitorManager.AlertAbout(c, true)
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server.playRegistrationBurst(session)
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return false
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}
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func (server *Server) playRegistrationBurst(session *Session) {
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c := session.client
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// continue registration
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d := c.Details()
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server.logger.Info("localconnect", fmt.Sprintf("Client connected [%s] [u:%s] [r:%s]", d.nick, d.username, d.realname))
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server.snomasks.Send(sno.LocalConnects, fmt.Sprintf("Client connected [%s] [u:%s] [h:%s] [ip:%s] [r:%s]", d.nick, d.username, c.RawHostname(), c.IPString(), d.realname))
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// send welcome text
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//NOTE(dan): we specifically use the NICK here instead of the nickmask
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// see http://modern.ircdocs.horse/#rplwelcome-001 for details on why we avoid using the nickmask
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session.Send(nil, server.name, RPL_WELCOME, d.nick, fmt.Sprintf(c.t("Welcome to the Internet Relay Network %s"), d.nick))
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session.Send(nil, server.name, RPL_YOURHOST, d.nick, fmt.Sprintf(c.t("Your host is %[1]s, running version %[2]s"), server.name, Ver))
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session.Send(nil, server.name, RPL_CREATED, d.nick, fmt.Sprintf(c.t("This server was created %s"), server.ctime.Format(time.RFC1123)))
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//TODO(dan): Look at adding last optional [<channel modes with a parameter>] parameter
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session.Send(nil, server.name, RPL_MYINFO, d.nick, server.name, Ver, supportedUserModesString, supportedChannelModesString)
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if c.isSTSOnly {
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for _, line := range server.Config().Server.STS.bannerLines {
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c.Notice(line)
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}
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return
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}
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rb := NewResponseBuffer(session)
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server.RplISupport(c, rb)
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server.Lusers(c, rb)
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server.MOTD(c, rb)
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rb.Send(true)
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modestring := c.ModeString()
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if modestring != "+" {
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session.Send(nil, d.nickMask, RPL_UMODEIS, d.nick, modestring)
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}
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if server.logger.IsLoggingRawIO() {
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session.Send(nil, c.server.name, "NOTICE", d.nick, c.t("This server is in debug mode and is logging all user I/O. If you do not wish for everything you send to be readable by the server owner(s), please disconnect."))
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}
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// #572: defer nick warnings to the end of the registration burst
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session.client.nickTimer.Touch(nil)
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}
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// RplISupport outputs our ISUPPORT lines to the client. This is used on connection and in VERSION responses.
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func (server *Server) RplISupport(client *Client, rb *ResponseBuffer) {
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translatedISupport := client.t("are supported by this server")
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nick := client.Nick()
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config := server.Config()
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for _, cachedTokenLine := range config.Server.isupport.CachedReply {
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length := len(cachedTokenLine) + 2
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tokenline := make([]string, length)
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tokenline[0] = nick
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copy(tokenline[1:], cachedTokenLine)
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tokenline[length-1] = translatedISupport
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rb.Add(nil, server.name, RPL_ISUPPORT, tokenline...)
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}
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}
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func (server *Server) Lusers(client *Client, rb *ResponseBuffer) {
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nick := client.Nick()
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stats := server.stats.GetValues()
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rb.Add(nil, server.name, RPL_LUSERCLIENT, nick, fmt.Sprintf(client.t("There are %[1]d users and %[2]d invisible on %[3]d server(s)"), stats.Total-stats.Invisible, stats.Invisible, 1))
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rb.Add(nil, server.name, RPL_LUSEROP, nick, strconv.Itoa(stats.Operators), client.t("IRC Operators online"))
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rb.Add(nil, server.name, RPL_LUSERUNKNOWN, nick, strconv.Itoa(stats.Unknown), client.t("unregistered connections"))
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rb.Add(nil, server.name, RPL_LUSERCHANNELS, nick, strconv.Itoa(server.channels.Len()), client.t("channels formed"))
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rb.Add(nil, server.name, RPL_LUSERME, nick, fmt.Sprintf(client.t("I have %[1]d clients and %[2]d servers"), stats.Total, 1))
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total := strconv.Itoa(stats.Total)
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max := strconv.Itoa(stats.Max)
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rb.Add(nil, server.name, RPL_LOCALUSERS, nick, total, max, fmt.Sprintf(client.t("Current local users %[1]s, max %[2]s"), total, max))
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rb.Add(nil, server.name, RPL_GLOBALUSERS, nick, total, max, fmt.Sprintf(client.t("Current global users %[1]s, max %[2]s"), total, max))
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}
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// MOTD serves the Message of the Day.
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func (server *Server) MOTD(client *Client, rb *ResponseBuffer) {
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|
motdLines := server.Config().Server.motdLines
|
|
|
|
if len(motdLines) < 1 {
|
|
rb.Add(nil, server.name, ERR_NOMOTD, client.nick, client.t("MOTD File is missing"))
|
|
return
|
|
}
|
|
|
|
rb.Add(nil, server.name, RPL_MOTDSTART, client.nick, fmt.Sprintf(client.t("- %s Message of the day - "), server.name))
|
|
for _, line := range motdLines {
|
|
rb.Add(nil, server.name, RPL_MOTD, client.nick, line)
|
|
}
|
|
rb.Add(nil, server.name, RPL_ENDOFMOTD, client.nick, client.t("End of MOTD command"))
|
|
}
|
|
|
|
// WhoisChannelsNames returns the common channel names between two users.
|
|
func (client *Client) WhoisChannelsNames(target *Client, multiPrefix bool) []string {
|
|
var chstrs []string
|
|
for _, channel := range target.Channels() {
|
|
// channel is secret and the target can't see it
|
|
if !client.HasMode(modes.Operator) {
|
|
if (target.HasMode(modes.Invisible) || channel.flags.HasMode(modes.Secret)) && !channel.hasClient(client) {
|
|
continue
|
|
}
|
|
}
|
|
chstrs = append(chstrs, channel.ClientPrefixes(target, multiPrefix)+channel.name)
|
|
}
|
|
return chstrs
|
|
}
|
|
|
|
func (client *Client) getWhoisOf(target *Client, rb *ResponseBuffer) {
|
|
cnick := client.Nick()
|
|
targetInfo := target.Details()
|
|
rb.Add(nil, client.server.name, RPL_WHOISUSER, cnick, targetInfo.nick, targetInfo.username, targetInfo.hostname, "*", targetInfo.realname)
|
|
tnick := targetInfo.nick
|
|
|
|
whoischannels := client.WhoisChannelsNames(target, rb.session.capabilities.Has(caps.MultiPrefix))
|
|
if whoischannels != nil {
|
|
rb.Add(nil, client.server.name, RPL_WHOISCHANNELS, cnick, tnick, strings.Join(whoischannels, " "))
|
|
}
|
|
tOper := target.Oper()
|
|
if tOper != nil {
|
|
rb.Add(nil, client.server.name, RPL_WHOISOPERATOR, cnick, tnick, tOper.WhoisLine)
|
|
}
|
|
if client.HasMode(modes.Operator) || client == target {
|
|
rb.Add(nil, client.server.name, RPL_WHOISACTUALLY, cnick, tnick, fmt.Sprintf("%s@%s", targetInfo.username, target.RawHostname()), target.IPString(), client.t("Actual user@host, Actual IP"))
|
|
}
|
|
if target.HasMode(modes.TLS) {
|
|
rb.Add(nil, client.server.name, RPL_WHOISSECURE, cnick, tnick, client.t("is using a secure connection"))
|
|
}
|
|
if targetInfo.accountName != "*" {
|
|
rb.Add(nil, client.server.name, RPL_WHOISACCOUNT, cnick, tnick, targetInfo.accountName, client.t("is logged in as"))
|
|
}
|
|
if target.HasMode(modes.Bot) {
|
|
rb.Add(nil, client.server.name, RPL_WHOISBOT, cnick, tnick, ircfmt.Unescape(fmt.Sprintf(client.t("is a $bBot$b on %s"), client.server.Config().Network.Name)))
|
|
}
|
|
|
|
if target.certfp != "" && (client.HasMode(modes.Operator) || client == target) {
|
|
rb.Add(nil, client.server.name, RPL_WHOISCERTFP, cnick, tnick, fmt.Sprintf(client.t("has client certificate fingerprint %s"), target.certfp))
|
|
}
|
|
rb.Add(nil, client.server.name, RPL_WHOISIDLE, cnick, tnick, strconv.FormatUint(target.IdleSeconds(), 10), strconv.FormatInt(target.SignonTime(), 10), client.t("seconds idle, signon time"))
|
|
}
|
|
|
|
// rplWhoReply returns the WHO reply between one user and another channel/user.
|
|
// <channel> <user> <host> <server> <nick> ( "H" / "G" ) ["*"] [ ( "@" / "+" ) ]
|
|
// :<hopcount> <real name>
|
|
func (client *Client) rplWhoReply(channel *Channel, target *Client, rb *ResponseBuffer) {
|
|
channelName := "*"
|
|
flags := ""
|
|
|
|
if target.Away() {
|
|
flags = "G"
|
|
} else {
|
|
flags = "H"
|
|
}
|
|
if target.HasMode(modes.Operator) {
|
|
flags += "*"
|
|
}
|
|
|
|
if channel != nil {
|
|
// TODO is this right?
|
|
flags += channel.ClientPrefixes(target, rb.session.capabilities.Has(caps.MultiPrefix))
|
|
channelName = channel.name
|
|
}
|
|
details := target.Details()
|
|
// hardcode a hopcount of 0 for now
|
|
rb.Add(nil, client.server.name, RPL_WHOREPLY, client.Nick(), channelName, details.username, details.hostname, client.server.name, details.nick, flags, "0 "+details.realname)
|
|
}
|
|
|
|
// rehash reloads the config and applies the changes from the config file.
|
|
func (server *Server) rehash() error {
|
|
server.logger.Debug("server", "Starting rehash")
|
|
|
|
// only let one REHASH go on at a time
|
|
server.rehashMutex.Lock()
|
|
defer server.rehashMutex.Unlock()
|
|
|
|
server.logger.Debug("server", "Got rehash lock")
|
|
|
|
config, err := LoadConfig(server.configFilename)
|
|
if err != nil {
|
|
return fmt.Errorf("Error loading config file config: %s", err.Error())
|
|
}
|
|
|
|
err = server.applyConfig(config, false)
|
|
if err != nil {
|
|
return fmt.Errorf("Error applying config changes: %s", err.Error())
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (server *Server) applyConfig(config *Config, initial bool) (err error) {
|
|
if initial {
|
|
server.configFilename = config.Filename
|
|
server.name = config.Server.Name
|
|
server.nameCasefolded = config.Server.nameCasefolded
|
|
} else {
|
|
// enforce configs that can't be changed after launch:
|
|
currentLimits := server.Config().Limits
|
|
if currentLimits.LineLen.Rest != config.Limits.LineLen.Rest {
|
|
return fmt.Errorf("Maximum line length (linelen) cannot be changed after launching the server, rehash aborted")
|
|
} else if server.name != config.Server.Name {
|
|
return fmt.Errorf("Server name cannot be changed after launching the server, rehash aborted")
|
|
} else if server.Config().Datastore.Path != config.Datastore.Path {
|
|
return fmt.Errorf("Datastore path cannot be changed after launching the server, rehash aborted")
|
|
}
|
|
}
|
|
|
|
// sanity checks complete, start modifying server state
|
|
server.logger.Info("server", "Using config file", server.configFilename)
|
|
oldConfig := server.Config()
|
|
|
|
// first, reload config sections for functionality implemented in subpackages:
|
|
|
|
err = server.connectionLimiter.ApplyConfig(config.Server.ConnectionLimiter)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = server.connectionThrottler.ApplyConfig(config.Server.ConnectionThrottler)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
tlConf := &config.Server.TorListeners
|
|
server.torLimiter.Configure(tlConf.MaxConnections, tlConf.ThrottleDuration, tlConf.MaxConnectionsPerDuration)
|
|
|
|
// reload logging config
|
|
wasLoggingRawIO := !initial && server.logger.IsLoggingRawIO()
|
|
err = server.logger.ApplyConfig(config.Logging)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
nowLoggingRawIO := server.logger.IsLoggingRawIO()
|
|
// notify existing clients if raw i/o logging was enabled by a rehash
|
|
sendRawOutputNotice := !wasLoggingRawIO && nowLoggingRawIO
|
|
|
|
// setup new and removed caps
|
|
addedCaps := caps.NewSet()
|
|
removedCaps := caps.NewSet()
|
|
updatedCaps := caps.NewSet()
|
|
|
|
// Translations
|
|
server.logger.Debug("server", "Regenerating HELP indexes for new languages")
|
|
server.helpIndexManager.GenerateIndices(config.languageManager)
|
|
|
|
if oldConfig != nil && config.Server.capValues[caps.Languages] != oldConfig.Server.capValues[caps.Languages] {
|
|
updatedCaps.Add(caps.Languages)
|
|
}
|
|
|
|
// SASL
|
|
authPreviouslyEnabled := oldConfig != nil && oldConfig.Accounts.AuthenticationEnabled
|
|
if config.Accounts.AuthenticationEnabled && (oldConfig == nil || !authPreviouslyEnabled) {
|
|
// enabling SASL
|
|
addedCaps.Add(caps.SASL)
|
|
} else if !config.Accounts.AuthenticationEnabled && (oldConfig == nil || authPreviouslyEnabled) {
|
|
// disabling SASL
|
|
removedCaps.Add(caps.SASL)
|
|
}
|
|
|
|
nickReservationPreviouslyDisabled := oldConfig != nil && !oldConfig.Accounts.NickReservation.Enabled
|
|
nickReservationNowEnabled := config.Accounts.NickReservation.Enabled
|
|
if nickReservationPreviouslyDisabled && nickReservationNowEnabled {
|
|
server.accounts.buildNickToAccountIndex()
|
|
}
|
|
|
|
hsPreviouslyDisabled := oldConfig != nil && !oldConfig.Accounts.VHosts.Enabled
|
|
hsNowEnabled := config.Accounts.VHosts.Enabled
|
|
if hsPreviouslyDisabled && hsNowEnabled {
|
|
server.accounts.initVHostRequestQueue()
|
|
}
|
|
|
|
chanRegPreviouslyDisabled := oldConfig != nil && !oldConfig.Channels.Registration.Enabled
|
|
chanRegNowEnabled := config.Channels.Registration.Enabled
|
|
if chanRegPreviouslyDisabled && chanRegNowEnabled {
|
|
server.channels.loadRegisteredChannels()
|
|
}
|
|
|
|
// STS
|
|
stsPreviouslyEnabled := oldConfig != nil && oldConfig.Server.STS.Enabled
|
|
stsValue := config.Server.capValues[caps.STS]
|
|
stsCurrentCapValue := ""
|
|
if oldConfig != nil {
|
|
stsCurrentCapValue = oldConfig.Server.capValues[caps.STS]
|
|
}
|
|
server.logger.Debug("server", "STS Vals", stsCurrentCapValue, stsValue, fmt.Sprintf("server[%v] config[%v]", stsPreviouslyEnabled, config.Server.STS.Enabled))
|
|
if (config.Server.STS.Enabled != stsPreviouslyEnabled) || (stsValue != stsCurrentCapValue) {
|
|
// XXX: STS is always removed by CAP NEW sts=duration=0, not CAP DEL
|
|
// so the appropriate notify is always a CAP NEW; put it in addedCaps for any change
|
|
addedCaps.Add(caps.STS)
|
|
}
|
|
|
|
if oldConfig != nil && config.Accounts.Bouncer.Enabled != oldConfig.Accounts.Bouncer.Enabled {
|
|
if config.Accounts.Bouncer.Enabled {
|
|
addedCaps.Add(caps.Bouncer)
|
|
} else {
|
|
removedCaps.Add(caps.Bouncer)
|
|
}
|
|
}
|
|
|
|
// resize history buffers as needed
|
|
if oldConfig != nil && oldConfig.History != config.History {
|
|
for _, channel := range server.channels.Channels() {
|
|
channel.history.Resize(config.History.ChannelLength, config.History.AutoresizeWindow)
|
|
}
|
|
for _, client := range server.clients.AllClients() {
|
|
client.history.Resize(config.History.ClientLength, config.History.AutoresizeWindow)
|
|
}
|
|
}
|
|
|
|
// activate the new config
|
|
server.SetConfig(config)
|
|
|
|
// burst new and removed caps
|
|
var capBurstSessions []*Session
|
|
added := make(map[caps.Version][]string)
|
|
var removed []string
|
|
|
|
// updated caps get DEL'd and then NEW'd
|
|
// so, we can just add updated ones to both removed and added lists here and they'll be correctly handled
|
|
server.logger.Debug("server", "Updated Caps", strings.Join(updatedCaps.Strings(caps.Cap301, config.Server.capValues), " "))
|
|
addedCaps.Union(updatedCaps)
|
|
removedCaps.Union(updatedCaps)
|
|
|
|
if !addedCaps.Empty() || !removedCaps.Empty() {
|
|
capBurstSessions = server.clients.AllWithCapsNotify()
|
|
|
|
added[caps.Cap301] = addedCaps.Strings(caps.Cap301, config.Server.capValues)
|
|
added[caps.Cap302] = addedCaps.Strings(caps.Cap302, config.Server.capValues)
|
|
// removed never has values, so we leave it as Cap301
|
|
removed = removedCaps.Strings(caps.Cap301, config.Server.capValues)
|
|
}
|
|
|
|
for _, sSession := range capBurstSessions {
|
|
// DEL caps and then send NEW ones so that updated caps get removed/added correctly
|
|
if !removedCaps.Empty() {
|
|
for _, capStr := range removed {
|
|
sSession.Send(nil, server.name, "CAP", sSession.client.Nick(), "DEL", capStr)
|
|
}
|
|
}
|
|
if !addedCaps.Empty() {
|
|
for _, capStr := range added[sSession.capVersion] {
|
|
sSession.Send(nil, server.name, "CAP", sSession.client.Nick(), "NEW", capStr)
|
|
}
|
|
}
|
|
}
|
|
|
|
server.logger.Info("server", "Using datastore", config.Datastore.Path)
|
|
if initial {
|
|
if err := server.loadDatastore(config); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
server.setupPprofListener(config)
|
|
|
|
// set RPL_ISUPPORT
|
|
var newISupportReplies [][]string
|
|
if oldConfig != nil {
|
|
newISupportReplies = oldConfig.Server.isupport.GetDifference(&config.Server.isupport)
|
|
}
|
|
|
|
// we are now open for business
|
|
err = server.setupListeners(config)
|
|
|
|
if !initial {
|
|
// push new info to all of our clients
|
|
for _, sClient := range server.clients.AllClients() {
|
|
for _, tokenline := range newISupportReplies {
|
|
sClient.Send(nil, server.name, RPL_ISUPPORT, append([]string{sClient.nick}, tokenline...)...)
|
|
}
|
|
|
|
if sendRawOutputNotice {
|
|
sClient.Notice(sClient.t("This server is in debug mode and is logging all user I/O. If you do not wish for everything you send to be readable by the server owner(s), please disconnect."))
|
|
}
|
|
|
|
if !oldConfig.Accounts.NickReservation.Enabled && config.Accounts.NickReservation.Enabled {
|
|
sClient.nickTimer.Initialize(sClient)
|
|
sClient.nickTimer.Touch(nil)
|
|
} else if oldConfig.Accounts.NickReservation.Enabled && !config.Accounts.NickReservation.Enabled {
|
|
sClient.nickTimer.Stop()
|
|
}
|
|
}
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func (server *Server) setupPprofListener(config *Config) {
|
|
pprofListener := ""
|
|
if config.Debug.PprofListener != nil {
|
|
pprofListener = *config.Debug.PprofListener
|
|
}
|
|
if server.pprofServer != nil {
|
|
if pprofListener == "" || (pprofListener != server.pprofServer.Addr) {
|
|
server.logger.Info("server", "Stopping pprof listener", server.pprofServer.Addr)
|
|
server.pprofServer.Close()
|
|
server.pprofServer = nil
|
|
}
|
|
}
|
|
if pprofListener != "" && server.pprofServer == nil {
|
|
ps := http.Server{
|
|
Addr: pprofListener,
|
|
}
|
|
go func() {
|
|
if err := ps.ListenAndServe(); err != nil {
|
|
server.logger.Error("server", "pprof listener failed", err.Error())
|
|
}
|
|
}()
|
|
server.pprofServer = &ps
|
|
server.logger.Info("server", "Started pprof listener", server.pprofServer.Addr)
|
|
}
|
|
}
|
|
|
|
func (config *Config) loadMOTD() (err error) {
|
|
if config.Server.MOTD != "" {
|
|
file, err := os.Open(config.Server.MOTD)
|
|
if err == nil {
|
|
defer file.Close()
|
|
|
|
reader := bufio.NewReader(file)
|
|
for {
|
|
line, err := reader.ReadString('\n')
|
|
if err != nil {
|
|
break
|
|
}
|
|
line = strings.TrimRight(line, "\r\n")
|
|
|
|
if config.Server.MOTDFormatting {
|
|
line = ircfmt.Unescape(line)
|
|
}
|
|
|
|
// "- " is the required prefix for MOTD, we just add it here to make
|
|
// bursting it out to clients easier
|
|
line = fmt.Sprintf("- %s", line)
|
|
|
|
config.Server.motdLines = append(config.Server.motdLines, line)
|
|
}
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (server *Server) loadDatastore(config *Config) error {
|
|
// open the datastore and load server state for which it (rather than config)
|
|
// is the source of truth
|
|
|
|
_, err := os.Stat(config.Datastore.Path)
|
|
if os.IsNotExist(err) {
|
|
server.logger.Warning("server", "database does not exist, creating it", config.Datastore.Path)
|
|
err = initializeDB(config.Datastore.Path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
db, err := OpenDatabase(config)
|
|
if err == nil {
|
|
server.store = db
|
|
} else {
|
|
return fmt.Errorf("Failed to open datastore: %s", err.Error())
|
|
}
|
|
|
|
// load *lines (from the datastores)
|
|
server.logger.Debug("server", "Loading D/Klines")
|
|
server.loadDLines()
|
|
server.loadKLines()
|
|
|
|
server.channelRegistry.Initialize(server)
|
|
server.channels.Initialize(server)
|
|
server.accounts.Initialize(server)
|
|
|
|
return nil
|
|
}
|
|
|
|
func (server *Server) setupListeners(config *Config) (err error) {
|
|
logListener := func(addr string, config listenerConfig) {
|
|
server.logger.Info("listeners",
|
|
fmt.Sprintf("now listening on %s, tls=%t, tor=%t.", addr, (config.TLSConfig != nil), config.IsTor),
|
|
)
|
|
}
|
|
|
|
// update or destroy all existing listeners
|
|
for addr := range server.listeners {
|
|
currentListener := server.listeners[addr]
|
|
newConfig, stillConfigured := config.Server.trueListeners[addr]
|
|
|
|
currentListener.Lock()
|
|
currentListener.shouldStop = !stillConfigured
|
|
currentListener.config = newConfig
|
|
currentListener.Unlock()
|
|
|
|
if stillConfigured {
|
|
logListener(addr, newConfig)
|
|
} else {
|
|
// tell the listener it should stop by interrupting its Accept() call:
|
|
currentListener.listener.Close()
|
|
delete(server.listeners, addr)
|
|
server.logger.Info("listeners", fmt.Sprintf("stopped listening on %s.", addr))
|
|
}
|
|
}
|
|
|
|
publicPlaintextListener := ""
|
|
// create new listeners that were not previously configured
|
|
for newAddr, newConfig := range config.Server.trueListeners {
|
|
if strings.HasPrefix(newAddr, ":") && !newConfig.IsTor && !newConfig.IsSTSOnly && newConfig.TLSConfig == nil {
|
|
publicPlaintextListener = newAddr
|
|
}
|
|
_, exists := server.listeners[newAddr]
|
|
if !exists {
|
|
// make new listener
|
|
listener, listenerErr := server.createListener(newAddr, newConfig, config.Server.UnixBindMode)
|
|
if listenerErr != nil {
|
|
server.logger.Error("server", "couldn't listen on", newAddr, listenerErr.Error())
|
|
err = listenerErr
|
|
continue
|
|
}
|
|
server.listeners[newAddr] = listener
|
|
logListener(newAddr, newConfig)
|
|
}
|
|
}
|
|
|
|
if publicPlaintextListener != "" {
|
|
server.logger.Warning("listeners", fmt.Sprintf("Your server is configured with public plaintext listener %s. Consider disabling it for improved security and privacy.", publicPlaintextListener))
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// elistMatcher takes and matches ELIST conditions
|
|
type elistMatcher struct {
|
|
MinClientsActive bool
|
|
MinClients int
|
|
MaxClientsActive bool
|
|
MaxClients int
|
|
}
|
|
|
|
// Matches checks whether the given channel matches our matches.
|
|
func (matcher *elistMatcher) Matches(channel *Channel) bool {
|
|
if matcher.MinClientsActive {
|
|
if len(channel.Members()) < matcher.MinClients {
|
|
return false
|
|
}
|
|
}
|
|
|
|
if matcher.MaxClientsActive {
|
|
if len(channel.Members()) < len(channel.members) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// RplList returns the RPL_LIST numeric for the given channel.
|
|
func (target *Client) RplList(channel *Channel, rb *ResponseBuffer) {
|
|
// get the correct number of channel members
|
|
var memberCount int
|
|
if target.HasMode(modes.Operator) || channel.hasClient(target) {
|
|
memberCount = len(channel.Members())
|
|
} else {
|
|
for _, member := range channel.Members() {
|
|
if !member.HasMode(modes.Invisible) {
|
|
memberCount++
|
|
}
|
|
}
|
|
}
|
|
|
|
rb.Add(nil, target.server.name, RPL_LIST, target.nick, channel.name, strconv.Itoa(memberCount), channel.topic)
|
|
}
|
|
|
|
var (
|
|
infoString1 = strings.Split(` ▄▄▄ ▄▄▄· ▄▄ • ▐ ▄
|
|
▪ ▀▄ █·▐█ ▀█ ▐█ ▀ ▪▪ •█▌▐█▪
|
|
▄█▀▄ ▐▀▀▄ ▄█▀▀█ ▄█ ▀█▄ ▄█▀▄▪▐█▐▐▌ ▄█▀▄
|
|
▐█▌.▐▌▐█•█▌▐█ ▪▐▌▐█▄▪▐█▐█▌ ▐▌██▐█▌▐█▌.▐▌
|
|
▀█▄▀▪.▀ ▀ ▀ ▀ ·▀▀▀▀ ▀█▄▀ ▀▀ █▪ ▀█▄▀▪
|
|
|
|
https://oragono.io/
|
|
https://github.com/oragono/oragono
|
|
https://crowdin.com/project/oragono
|
|
`, "\n")
|
|
infoString2 = strings.Split(` Daniel Oakley, DanielOaks, <daniel@danieloaks.net>
|
|
Shivaram Lingamneni, slingamn, <slingamn@cs.stanford.edu>
|
|
`, "\n")
|
|
infoString3 = strings.Split(` 3onyc
|
|
Edmund Huber
|
|
Euan Kemp (euank)
|
|
Jeremy Latt
|
|
Martin Lindhe (martinlindhe)
|
|
Roberto Besser (besser)
|
|
Robin Burchell (rburchell)
|
|
Sean Enck (enckse)
|
|
soul9
|
|
Vegax
|
|
`, "\n")
|
|
)
|