12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442144314441445144614471448144914501451145214531454145514561457145814591460146114621463146414651466146714681469147014711472147314741475147614771478147914801481148214831484148514861487148814891490149114921493149414951496149714981499150015011502150315041505150615071508150915101511151215131514151515161517151815191520152115221523 |
- // Copyright (c) 2012-2014 Jeremy Latt
- // Copyright (c) 2014-2015 Edmund Huber
- // Copyright (c) 2016- Daniel Oaks <daniel@danieloaks.net>
- // released under the MIT license
-
- package irc
-
- import (
- "bufio"
- "crypto/tls"
- "encoding/base64"
- "fmt"
- "log"
- "net"
- "net/http"
- "os"
- "os/signal"
- "strconv"
- "strings"
- "sync"
- "syscall"
- "time"
-
- "github.com/DanielOaks/girc-go/ircmsg"
- "github.com/tidwall/buntdb"
- )
-
- var (
- // cached because this may be used lots
- tooManyClientsMsg = ircmsg.MakeMessage(nil, "", "ERROR", "Too many clients from your IP or network")
- tooManyClientsBytes, _ = tooManyClientsMsg.Line()
- )
-
- // Limits holds the maximum limits for various things such as topic lengths
- type Limits struct {
- AwayLen int
- ChannelLen int
- KickLen int
- MonitorEntries int
- NickLen int
- TopicLen int
- ChanListModes int
- }
-
- // ListenerInterface represents an interface for a listener.
- type ListenerInterface struct {
- Listener net.Listener
- Events chan ListenerEvent
- }
-
- const (
- // DestroyListener instructs the listener to destroy itself.
- DestroyListener ListenerEventType = iota
- // UpdateListener instructs the listener to update itself (grab new certs, etc).
- UpdateListener = iota
- )
-
- // ListenerEventType is the type of event this is.
- type ListenerEventType int
-
- // ListenerEvent is an event that's passed to the listener.
- type ListenerEvent struct {
- Type ListenerEventType
- NewConfig *tls.Config
- }
-
- // Server is the main Oragono server.
- type Server struct {
- accountRegistration *AccountRegistration
- accounts map[string]*ClientAccount
- authenticationEnabled bool
- channels ChannelNameMap
- checkIdent bool
- clients *ClientLookupSet
- commands chan Command
- configFilename string
- connectionLimits *ConnectionLimits
- connectionLimitsMutex sync.Mutex // used when affecting the connection limiter, to make sure rehashing doesn't make things go out-of-whack
- ctime time.Time
- currentOpers map[*Client]bool
- idle chan *Client
- isupport *ISupportList
- limits Limits
- listenerEventActMutex sync.Mutex
- listeners map[string]ListenerInterface
- listenerUpdateMutex sync.Mutex
- monitoring map[string][]Client
- motdLines []string
- name string
- nameCasefolded string
- networkName string
- newConns chan clientConn
- operators map[string]Oper
- operclasses map[string]OperClass
- password []byte
- passwords *PasswordManager
- rehashMutex sync.Mutex
- rehashSignal chan os.Signal
- signals chan os.Signal
- store buntdb.DB
- whoWas *WhoWasList
- }
-
- var (
- // ServerExitSignals are the signals the server will exit on.
- ServerExitSignals = []os.Signal{
- syscall.SIGINT,
- syscall.SIGTERM,
- syscall.SIGQUIT,
- }
- )
-
- type clientConn struct {
- Conn net.Conn
- IsTLS bool
- }
-
- // NewServer returns a new Oragono server.
- func NewServer(configFilename string, config *Config) *Server {
- casefoldedName, err := Casefold(config.Server.Name)
- if err != nil {
- log.Println(fmt.Sprintf("Server name isn't valid: [%s]", config.Server.Name), err.Error())
- return nil
- }
-
- // startup check that we have HELP entries for every command
- for name := range Commands {
- _, exists := Help[strings.ToLower(name)]
- if !exists {
- log.Fatal("Help entry does not exist for ", name)
- }
- }
-
- if config.AuthenticationEnabled {
- SupportedCapabilities[SASL] = true
- }
-
- operClasses, err := config.OperatorClasses()
- if err != nil {
- log.Fatal("Error loading oper classes:", err.Error())
- }
- opers, err := config.Operators(operClasses)
- if err != nil {
- log.Fatal("Error loading operators:", err.Error())
- }
-
- connectionLimits, err := NewConnectionLimits(config.Server.ConnectionLimits)
- if err != nil {
- log.Fatal("Error loading connection limits:", err.Error())
- }
-
- server := &Server{
- accounts: make(map[string]*ClientAccount),
- authenticationEnabled: config.AuthenticationEnabled,
- channels: make(ChannelNameMap),
- clients: NewClientLookupSet(),
- commands: make(chan Command),
- configFilename: configFilename,
- connectionLimits: connectionLimits,
- ctime: time.Now(),
- currentOpers: make(map[*Client]bool),
- idle: make(chan *Client),
- limits: Limits{
- AwayLen: int(config.Limits.AwayLen),
- ChannelLen: int(config.Limits.ChannelLen),
- KickLen: int(config.Limits.KickLen),
- MonitorEntries: int(config.Limits.MonitorEntries),
- NickLen: int(config.Limits.NickLen),
- TopicLen: int(config.Limits.TopicLen),
- ChanListModes: int(config.Limits.ChanListModes),
- },
- listeners: make(map[string]ListenerInterface),
- monitoring: make(map[string][]Client),
- name: config.Server.Name,
- nameCasefolded: casefoldedName,
- networkName: config.Network.Name,
- newConns: make(chan clientConn),
- operclasses: *operClasses,
- operators: opers,
- signals: make(chan os.Signal, len(ServerExitSignals)),
- rehashSignal: make(chan os.Signal, 1),
- whoWas: NewWhoWasList(config.Limits.WhowasEntries),
- checkIdent: config.Server.CheckIdent,
- }
-
- // open data store
- db, err := buntdb.Open(config.Datastore.Path)
- if err != nil {
- log.Fatal(fmt.Sprintf("Failed to open datastore: %s", err.Error()))
- }
- server.store = *db
-
- // load password manager
- err = server.store.View(func(tx *buntdb.Tx) error {
- saltString, err := tx.Get(keySalt)
- if err != nil {
- return fmt.Errorf("Could not retrieve salt string: %s", err.Error())
- }
-
- salt, err := base64.StdEncoding.DecodeString(saltString)
- if err != nil {
- return err
- }
-
- pwm := NewPasswordManager(salt)
- server.passwords = &pwm
- return nil
- })
- if err != nil {
- log.Fatal(fmt.Sprintf("Could not load salt: %s", 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")
- // "- " is the required prefix for MOTD, we just add it here to make
- // bursting it out to clients easier
- line = fmt.Sprintf("- %s", line)
-
- server.motdLines = append(server.motdLines, line)
- }
- }
- }
-
- if config.Server.Password != "" {
- server.password = config.Server.PasswordBytes()
- }
-
- for _, addr := range config.Server.Listen {
- server.createListener(addr, config.TLSListeners())
- }
-
- if config.Server.Wslisten != "" {
- server.wslisten(config.Server.Wslisten, config.Server.TLSListeners)
- }
-
- // registration
- accountReg := NewAccountRegistration(config.Registration.Accounts)
- server.accountRegistration = &accountReg
-
- // Attempt to clean up when receiving these signals.
- signal.Notify(server.signals, ServerExitSignals...)
- signal.Notify(server.rehashSignal, syscall.SIGHUP)
-
- server.setISupport()
-
- return server
- }
-
- // setISupport sets up our RPL_ISUPPORT reply.
- func (server *Server) setISupport() {
- // add RPL_ISUPPORT tokens
- server.isupport = NewISupportList()
- server.isupport.Add("AWAYLEN", strconv.Itoa(server.limits.AwayLen))
- server.isupport.Add("CASEMAPPING", "rfc7700")
- server.isupport.Add("CHANMODES", strings.Join([]string{ChannelModes{BanMask, ExceptMask, InviteMask}.String(), "", ChannelModes{UserLimit, Key}.String(), ChannelModes{InviteOnly, Moderated, NoOutside, OpOnlyTopic, Secret}.String()}, ","))
- server.isupport.Add("CHANNELLEN", strconv.Itoa(server.limits.ChannelLen))
- server.isupport.Add("CHANTYPES", "#")
- server.isupport.Add("EXCEPTS", "")
- server.isupport.Add("INVEX", "")
- server.isupport.Add("KICKLEN", strconv.Itoa(server.limits.KickLen))
- server.isupport.Add("MAXLIST", fmt.Sprintf("beI:%s", strconv.Itoa(server.limits.ChanListModes)))
- server.isupport.Add("MAXTARGETS", "4")
- server.isupport.Add("MODES", "")
- server.isupport.Add("MONITOR", strconv.Itoa(server.limits.MonitorEntries))
- server.isupport.Add("NETWORK", server.networkName)
- server.isupport.Add("NICKLEN", strconv.Itoa(server.limits.NickLen))
- server.isupport.Add("PREFIX", "(qaohv)~&@%+")
- server.isupport.Add("STATUSMSG", "~&@%+")
- server.isupport.Add("TARGMAX", "NAMES:1,LIST:1,KICK:1,WHOIS:1,PRIVMSG:4,NOTICE:4,MONITOR:")
- server.isupport.Add("TOPICLEN", strconv.Itoa(server.limits.TopicLen))
-
- // account registration
- if server.accountRegistration.Enabled {
- // 'none' isn't shown in the REGCALLBACKS vars
- var enabledCallbacks []string
- for _, name := range server.accountRegistration.EnabledCallbacks {
- if name != "*" {
- enabledCallbacks = append(enabledCallbacks, name)
- }
- }
-
- server.isupport.Add("REGCOMMANDS", "CREATE,VERIFY")
- server.isupport.Add("REGCALLBACKS", strings.Join(enabledCallbacks, ","))
- server.isupport.Add("REGCREDTYPES", "passphrase,certfp")
- }
-
- server.isupport.RegenerateCachedReply()
- }
-
- func loadChannelList(channel *Channel, list string, maskMode ChannelMode) {
- if list == "" {
- return
- }
- channel.lists[maskMode].AddAll(strings.Split(list, " "))
- }
-
- func (server *Server) Shutdown() {
- //TODO(dan): Make sure we disallow new nicks
- for _, client := range server.clients.ByNick {
- client.Notice("Server is shutting down")
- }
-
- if err := server.store.Close(); err != nil {
- Log.error.Println("Server.Shutdown store.Close: error:", err)
- }
- }
-
- // Run starts the server.
- func (server *Server) Run() {
- // defer closing db/store
- defer server.store.Close()
-
- done := false
- for !done {
- select {
- case <-server.signals:
- server.Shutdown()
- done = true
-
- case <-server.rehashSignal:
- // eventually we expect to use HUP to reload config
- err := server.rehash()
- if err != nil {
- Log.error.Println("Failed to rehash:", err.Error())
- }
-
- case conn := <-server.newConns:
- // check connection limits
- ipaddr := net.ParseIP(IPString(conn.Conn.RemoteAddr()))
- if ipaddr != nil {
- server.connectionLimitsMutex.Lock()
- err := server.connectionLimits.AddClient(ipaddr, false)
- server.connectionLimitsMutex.Unlock()
- if err == nil {
- go NewClient(server, conn.Conn, conn.IsTLS)
- continue
- }
- }
- // too many connections from one client, tell the client and close the connection
- // 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
- conn.Conn.Write([]byte(tooManyClientsBytes))
- conn.Conn.Close()
-
- case client := <-server.idle:
- client.Idle()
- }
- }
- }
-
- //
- // IRC protocol listeners
- //
-
- // createListener starts the given listeners.
- func (server *Server) createListener(addr string, tlsMap map[string]*tls.Config) {
- config, listenTLS := tlsMap[addr]
-
- _, alreadyExists := server.listeners[addr]
- if alreadyExists {
- log.Fatal(server, "listener already exists:", addr)
- }
-
- // make listener event channel
- listenerEventChannel := make(chan ListenerEvent, 1)
-
- // make listener
- listener, err := net.Listen("tcp", addr)
- if err != nil {
- log.Fatal(server, "listen error: ", err)
- }
-
- tlsString := "plaintext"
- if listenTLS {
- config.ClientAuth = tls.RequestClientCert
- listener = tls.NewListener(listener, config)
- tlsString = "TLS"
- }
-
- // throw our details to the server so we can be modified/killed later
- li := ListenerInterface{
- Events: listenerEventChannel,
- Listener: listener,
- }
- server.listeners[addr] = li
-
- // start listening
- Log.info.Printf("%s listening on %s using %s.", server.name, addr, tlsString)
-
- // setup accept goroutine
- go func() {
- for {
- conn, err := listener.Accept()
-
- if err == nil {
- newConn := clientConn{
- Conn: conn,
- IsTLS: listenTLS,
- }
-
- server.newConns <- newConn
- }
-
- select {
- case event := <-server.listeners[addr].Events:
- // this is used to confirm that whoever passed us this event has closed the existing listener correctly (in an attempt to get us to notice the event).
- // this is required to keep REHASH from having a very small race possibility of killing the primary listener
- server.listenerEventActMutex.Lock()
- server.listenerEventActMutex.Unlock()
-
- if event.Type == DestroyListener {
- // listener should already be closed, this is just for safety
- listener.Close()
- return
- } else if event.Type == UpdateListener {
- // close old listener
- listener.Close()
-
- // make new listener
- listener, err = net.Listen("tcp", addr)
- if err != nil {
- log.Fatal(server, "listen error: ", err)
- }
-
- tlsString := "plaintext"
- if event.NewConfig != nil {
- config = event.NewConfig
- config.ClientAuth = tls.RequestClientCert
- listener = tls.NewListener(listener, config)
- tlsString = "TLS"
- }
-
- // update server ListenerInterface
- li.Listener = listener
- server.listenerUpdateMutex.Lock()
- server.listeners[addr] = li
- server.listenerUpdateMutex.Unlock()
-
- // print notice
- Log.info.Printf("%s updated listener %s using %s.", server.name, addr, tlsString)
- }
- default:
- // no events waiting for us, fall-through and continue
- }
- }
- }()
- }
-
- //
- // websocket listen goroutine
- //
-
- func (server *Server) wslisten(addr string, tlsMap map[string]*TLSListenConfig) {
- http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
- if r.Method != "GET" {
- Log.error.Printf("%s method not allowed", server.name)
- return
- }
-
- // We don't have any subprotocols, so if someone attempts to `new
- // WebSocket(server, "subprotocol")` they'll break here, instead of
- // getting the default, ambiguous, response from gorilla.
- if v, ok := r.Header["Sec-Websocket-Protocol"]; ok {
- http.Error(w, fmt.Sprintf("WebSocket subprocotols (e.g. %s) not supported", v), 400)
- }
-
- ws, err := upgrader.Upgrade(w, r, nil)
- if err != nil {
- Log.error.Printf("%s websocket upgrade error: %s", server.name, err)
- return
- }
-
- newConn := clientConn{
- Conn: WSContainer{ws},
- IsTLS: false, //TODO(dan): track TLS or not here properly
- }
- server.newConns <- newConn
- })
- go func() {
- config, listenTLS := tlsMap[addr]
-
- tlsString := "plaintext"
- var err error
- if listenTLS {
- tlsString = "TLS"
- }
- Log.info.Printf("%s websocket listening on %s using %s.", server.name, addr, tlsString)
-
- if listenTLS {
- err = http.ListenAndServeTLS(addr, config.Cert, config.Key, nil)
- } else {
- err = http.ListenAndServe(addr, nil)
- }
- if err != nil {
- Log.error.Printf("%s listenAndServe (%s) error: %s", server.name, tlsString, err)
- }
- }()
- }
-
- //
- // server functionality
- //
-
- func (server *Server) tryRegister(c *Client) {
- if c.registered || !c.HasNick() || !c.HasUsername() ||
- (c.capState == CapNegotiating) {
- return
- }
- c.Register()
-
- // send welcome text
- //NOTE(dan): we specifically use the NICK here instead of the nickmask
- // see http://modern.ircdocs.horse/#rplwelcome-001 for details on why we avoid using the nickmask
- c.Send(nil, server.name, RPL_WELCOME, c.nick, fmt.Sprintf("Welcome to the Internet Relay Network %s", c.nick))
- c.Send(nil, server.name, RPL_YOURHOST, c.nick, fmt.Sprintf("Your host is %s, running version %s", server.name, Ver))
- c.Send(nil, server.name, RPL_CREATED, c.nick, fmt.Sprintf("This server was created %s", server.ctime.Format(time.RFC1123)))
- //TODO(dan): Look at adding last optional [<channel modes with a parameter>] parameter
- c.Send(nil, server.name, RPL_MYINFO, c.nick, server.name, Ver, supportedUserModesString, supportedChannelModesString)
- c.RplISupport()
- server.MOTD(c)
- c.Send(nil, c.nickMaskString, RPL_UMODEIS, c.nick, c.ModeString())
- }
-
- func (server *Server) MOTD(client *Client) {
- if len(server.motdLines) < 1 {
- client.Send(nil, server.name, ERR_NOMOTD, client.nick, "MOTD File is missing")
- return
- }
-
- client.Send(nil, server.name, RPL_MOTDSTART, client.nick, fmt.Sprintf("- %s Message of the day - ", server.name))
- for _, line := range server.motdLines {
- client.Send(nil, server.name, RPL_MOTD, client.nick, line)
- }
- client.Send(nil, server.name, RPL_ENDOFMOTD, client.nick, "End of MOTD command")
- }
-
- func (server *Server) Id() string {
- return server.name
- }
-
- func (server *Server) Nick() string {
- return server.Id()
- }
-
- //
- // registration commands
- //
-
- // PASS <password>
- func passHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- if client.registered {
- client.Send(nil, server.name, ERR_ALREADYREGISTRED, client.nick, "You may not reregister")
- return false
- }
-
- // if no password exists, skip checking
- if len(server.password) == 0 {
- client.authorized = true
- return false
- }
-
- // check the provided password
- password := []byte(msg.Params[0])
- if ComparePassword(server.password, password) != nil {
- client.Send(nil, server.name, ERR_PASSWDMISMATCH, client.nick, "Password incorrect")
- client.Send(nil, server.name, "ERROR", "Password incorrect")
- return true
- }
-
- client.authorized = true
- return false
- }
-
- // USER <username> * 0 <realname>
- func userHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- if client.registered {
- client.Send(nil, server.name, ERR_ALREADYREGISTRED, client.nick, "You may not reregister")
- return false
- }
-
- if !client.authorized {
- client.Quit("Bad password")
- return true
- }
-
- if client.username != "" && client.realname != "" {
- return false
- }
-
- // confirm that username is valid
- //
- _, err := CasefoldName(msg.Params[0])
- if err != nil {
- client.Send(nil, "", "ERROR", "Malformed username")
- return true
- }
-
- // set user info and log client in
- //TODO(dan): Could there be a race condition here with adding/removing the client?
- //TODO(dan): we should do something like server.clients.Replace(client) instead
-
- // we do it this way to ONLY replace what hasn't already been set
- server.clients.Remove(client)
-
- if !client.HasUsername() {
- client.username = "~" + msg.Params[0]
- // don't bother updating nickmask here, it's not valid anyway
- }
- if client.realname == "" {
- client.realname = msg.Params[3]
- }
-
- server.clients.Add(client)
- server.tryRegister(client)
-
- return false
- }
-
- // QUIT [<reason>]
- func quitHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- reason := "Quit"
- if len(msg.Params) > 0 {
- reason += ": " + msg.Params[0]
- }
- client.Quit(reason)
- return true
- }
-
- //
- // normal commands
- //
-
- // PING <server1> [<server2>]
- func pingHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- client.Send(nil, server.name, "PONG", msg.Params...)
- return false
- }
-
- // PONG <server> [ <server2> ]
- func pongHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- // client gets touched when they send this command, so we don't need to do anything
- return false
- }
-
- // JOIN <channel>{,<channel>} [<key>{,<key>}]
- // JOIN 0
- func joinHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- // handle JOIN 0
- if msg.Params[0] == "0" {
- for channel := range client.channels {
- channel.Part(client, client.nickCasefolded)
- }
- return false
- }
-
- // handle regular JOINs
- channels := strings.Split(msg.Params[0], ",")
- var keys []string
- if len(msg.Params) > 1 {
- keys = strings.Split(msg.Params[1], ",")
- }
-
- for i, name := range channels {
- casefoldedName, err := CasefoldChannel(name)
- if err != nil {
- client.Send(nil, server.name, ERR_NOSUCHCHANNEL, client.nick, name, "No such channel")
- continue
- }
-
- channel := server.channels.Get(casefoldedName)
- if channel == nil {
- if len(casefoldedName) > server.limits.ChannelLen {
- client.Send(nil, server.name, ERR_NOSUCHCHANNEL, client.nick, name, "No such channel")
- continue
- }
- channel = NewChannel(server, name, true)
- }
-
- var key string
- if len(keys) > i {
- key = keys[i]
- }
-
- channel.Join(client, key)
- }
- return false
- }
-
- // PART <channel>{,<channel>} [<reason>]
- func partHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- channels := strings.Split(msg.Params[0], ",")
- var reason string //TODO(dan): if this isn't supplied here, make sure the param doesn't exist in the PART message sent to other users
- if len(msg.Params) > 1 {
- reason = msg.Params[1]
- }
-
- for _, chname := range channels {
- casefoldedChannelName, err := CasefoldChannel(chname)
- channel := server.channels.Get(casefoldedChannelName)
-
- if err != nil || channel == nil {
- client.Send(nil, server.name, ERR_NOSUCHCHANNEL, client.nick, chname, "No such channel")
- continue
- }
-
- channel.Part(client, reason)
- }
- return false
- }
-
- // TOPIC <channel> [<topic>]
- func topicHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- name, err := CasefoldChannel(msg.Params[0])
- channel := server.channels.Get(name)
- if err != nil || channel == nil {
- client.Send(nil, server.name, ERR_NOSUCHCHANNEL, client.nick, msg.Params[0], "No such channel")
- return false
- }
-
- if len(msg.Params) > 1 {
- channel.SetTopic(client, msg.Params[1])
- } else {
- channel.GetTopic(client)
- }
- return false
- }
-
- // PRIVMSG <target>{,<target>} <message>
- func privmsgHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- clientOnlyTags := GetClientOnlyTags(msg.Tags)
- targets := strings.Split(msg.Params[0], ",")
- message := msg.Params[1]
-
- for _, targetString := range targets[:4] {
- prefixes, targetString := SplitChannelMembershipPrefixes(targetString)
- lowestPrefix := GetLowestChannelModePrefix(prefixes)
-
- target, err := CasefoldChannel(targetString)
- if err == nil {
- channel := server.channels.Get(target)
- if channel == nil {
- client.Send(nil, server.name, ERR_NOSUCHCHANNEL, client.nick, targetString, "No such channel")
- continue
- }
- channel.PrivMsg(lowestPrefix, clientOnlyTags, client, message)
- } else {
- target, err = CasefoldName(targetString)
- user := server.clients.Get(target)
- if err != nil || user == nil {
- client.Send(nil, server.name, ERR_NOSUCHNICK, target, "No such nick")
- continue
- }
- if !user.capabilities[MessageTags] {
- clientOnlyTags = nil
- }
- user.SendFromClient(client, clientOnlyTags, client.nickMaskString, "PRIVMSG", user.nick, message)
- if client.capabilities[EchoMessage] {
- client.SendFromClient(client, clientOnlyTags, client.nickMaskString, "PRIVMSG", user.nick, message)
- }
- if user.flags[Away] {
- //TODO(dan): possibly implement cooldown of away notifications to users
- client.Send(nil, server.name, RPL_AWAY, user.nick, user.awayMessage)
- }
- }
- }
- return false
- }
-
- func (client *Client) WhoisChannelsNames(target *Client) []string {
- isMultiPrefix := target.capabilities[MultiPrefix]
- var chstrs []string
- index := 0
- for channel := range client.channels {
- // channel is secret and the target can't see it
- if !target.flags[Operator] && channel.flags[Secret] && !channel.members.Has(target) {
- continue
- }
- chstrs = append(chstrs, channel.members[client].Prefixes(isMultiPrefix)+channel.name)
- index++
- }
- return chstrs
- }
-
- // WHOIS [ <target> ] <mask> *( "," <mask> )
- func whoisHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- var masksString string
- //var target string
-
- if len(msg.Params) > 1 {
- //target = msg.Params[0]
- masksString = msg.Params[1]
- } else {
- masksString = msg.Params[0]
- }
-
- if client.flags[Operator] {
- masks := strings.Split(masksString, ",")
- for _, mask := range masks {
- casefoldedMask, err := Casefold(mask)
- if err != nil {
- client.Send(nil, client.server.name, ERR_NOSUCHNICK, mask, "No such nick")
- continue
- }
- matches := server.clients.FindAll(casefoldedMask)
- if len(matches) == 0 {
- client.Send(nil, client.server.name, ERR_NOSUCHNICK, mask, "No such nick")
- continue
- }
- for mclient := range matches {
- client.getWhoisOf(mclient)
- }
- }
- } else {
- // only get the first request
- casefoldedMask, err := Casefold(strings.Split(masksString, ",")[0])
- mclient := server.clients.Get(casefoldedMask)
- if err != nil || mclient == nil {
- client.Send(nil, client.server.name, ERR_NOSUCHNICK, masksString, "No such nick")
- // fall through, ENDOFWHOIS is always sent
- } else {
- client.getWhoisOf(mclient)
- }
- }
- client.Send(nil, server.name, RPL_ENDOFWHOIS, client.nick, masksString, "End of /WHOIS list")
- return false
- }
-
- func (client *Client) getWhoisOf(target *Client) {
- client.Send(nil, client.server.name, RPL_WHOISUSER, client.nick, target.nick, target.username, target.hostname, "*", target.realname)
- //TODO(dan): ...one channel per reply? really?
- for _, line := range client.WhoisChannelsNames(target) {
- client.Send(nil, client.server.name, RPL_WHOISCHANNELS, client.nick, target.nick, line)
- }
- if target.class != nil {
- client.Send(nil, client.server.name, RPL_WHOISOPERATOR, client.nick, target.nick, target.whoisLine)
- }
- if target.certfp != "" && (client.flags[Operator] || client == target) {
- client.Send(nil, client.server.name, RPL_WHOISCERTFP, client.nick, target.nick, fmt.Sprintf("has client certificate fingerprint %s", target.certfp))
- }
- client.Send(nil, client.server.name, RPL_WHOISIDLE, client.nick, target.nick, strconv.FormatUint(target.IdleSeconds(), 10), strconv.FormatInt(target.SignonTime(), 10), "seconds idle, signon time")
- }
-
- // <channel> <user> <host> <server> <nick> ( "H" / "G" ) ["*"] [ ( "@" / "+" ) ]
- // :<hopcount> <real name>
- func (target *Client) RplWhoReply(channel *Channel, client *Client) {
- channelName := "*"
- flags := ""
-
- if client.flags[Away] {
- flags = "G"
- } else {
- flags = "H"
- }
- if client.flags[Operator] {
- flags += "*"
- }
-
- if channel != nil {
- flags += channel.members[client].Prefixes(target.capabilities[MultiPrefix])
- channelName = channel.name
- }
- target.Send(nil, target.server.name, RPL_WHOREPLY, target.nick, channelName, client.username, client.hostname, client.server.name, client.nick, flags, strconv.Itoa(client.hops)+" "+client.realname)
- }
-
- func whoChannel(client *Client, channel *Channel, friends ClientSet) {
- for member := range channel.members {
- if !client.flags[Invisible] || friends[client] {
- client.RplWhoReply(channel, member)
- }
- }
- }
-
- // WHO [ <mask> [ "o" ] ]
- func whoHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- friends := client.Friends()
-
- var mask string
- if len(msg.Params) > 0 {
- casefoldedMask, err := Casefold(msg.Params[0])
- if err != nil {
- client.Send(nil, server.name, ERR_UNKNOWNERROR, "WHO", "Mask isn't valid")
- return false
- }
- mask = casefoldedMask
- }
-
- //TODO(dan): is this used and would I put this param in the Modern doc?
- // if not, can we remove it?
- //var operatorOnly bool
- //if len(msg.Params) > 1 && msg.Params[1] == "o" {
- // operatorOnly = true
- //}
-
- if mask == "" {
- for _, channel := range server.channels {
- whoChannel(client, channel, friends)
- }
- } else if mask[0] == '#' {
- // TODO implement wildcard matching
- //TODO(dan): ^ only for opers
- channel := server.channels.Get(mask)
- if channel != nil {
- whoChannel(client, channel, friends)
- }
- } else {
- for mclient := range server.clients.FindAll(mask) {
- client.RplWhoReply(nil, mclient)
- }
- }
-
- client.Send(nil, server.name, RPL_ENDOFWHO, client.nick, mask, "End of WHO list")
- return false
- }
-
- // OPER <name> <password>
- func operHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- name, err := CasefoldName(msg.Params[0])
- if err != nil {
- client.Send(nil, server.name, ERR_PASSWDMISMATCH, client.nick, "Password incorrect")
- return true
- }
- hash := server.operators[name].Pass
- password := []byte(msg.Params[1])
-
- err = ComparePassword(hash, password)
-
- if (hash == nil) || (err != nil) {
- fmt.Println("2", hash)
- client.Send(nil, server.name, ERR_PASSWDMISMATCH, client.nick, "Password incorrect")
- return true
- }
-
- client.flags[Operator] = true
- client.operName = name
- client.class = server.operators[name].Class
- server.currentOpers[client] = true
- client.whoisLine = server.operators[name].WhoisLine
-
- // push new vhost if one is set
- if len(server.operators[name].Vhost) > 0 {
- originalHost := client.nickMaskString
- client.vhost = server.operators[name].Vhost
- for fClient := range client.Friends(ChgHost) {
- fClient.SendFromClient(client, nil, originalHost, "CHGHOST", client.username, client.vhost)
- }
- client.updateNickMask()
- }
-
- client.Send(nil, server.name, RPL_YOUREOPER, client.nick, "You are now an IRC operator")
- //TODO(dan): Should this be sent automagically as part of setting the flag/mode?
- modech := ModeChanges{&ModeChange{
- mode: Operator,
- op: Add,
- }}
- client.Send(nil, server.name, "MODE", client.nick, modech.String())
- return false
- }
-
- // rehash reloads the config and applies the changes from the config file.
- func (server *Server) rehash() error {
- // only let one REHASH go on at a time
- server.rehashMutex.Lock()
-
- config, err := LoadConfig(server.configFilename)
-
- if err != nil {
- return fmt.Errorf("Error rehashing config file: %s", err.Error())
- }
-
- // confirm connectionLimits are fine
- connectionLimits, err := NewConnectionLimits(config.Server.ConnectionLimits)
- if err != nil {
- return fmt.Errorf("Error rehashing config file: %s", err.Error())
- }
-
- // confirm operator stuff all exists and is fine
- operclasses, err := config.OperatorClasses()
- if err != nil {
- return fmt.Errorf("Error rehashing config file: %s", err.Error())
- }
- opers, err := config.Operators(operclasses)
- if err != nil {
- return fmt.Errorf("Error rehashing config file: %s", err.Error())
- }
- for client := range server.currentOpers {
- _, exists := opers[client.operName]
- if !exists {
- return fmt.Errorf("Oper [%s] no longer exists (used by client [%s])", client.operName, client.nickMaskString)
- }
- }
-
- // apply new connectionlimits
- server.connectionLimitsMutex.Lock()
- server.connectionLimits = connectionLimits
-
- for _, client := range server.clients.ByNick {
- ipaddr := net.ParseIP(IPString(client.socket.conn.RemoteAddr()))
- if ipaddr != nil {
- server.connectionLimits.AddClient(ipaddr, true)
- }
- }
- server.connectionLimitsMutex.Unlock()
-
- // setup new and removed caps
- addedCaps := make(CapabilitySet)
- removedCaps := make(CapabilitySet)
-
- // SASL
- if config.AuthenticationEnabled && !server.authenticationEnabled {
- // enabling SASL
- SupportedCapabilities[SASL] = true
- addedCaps[SASL] = true
- }
- if !config.AuthenticationEnabled && server.authenticationEnabled {
- // disabling SASL
- SupportedCapabilities[SASL] = false
- removedCaps[SASL] = true
- }
- server.authenticationEnabled = config.AuthenticationEnabled
-
- // burst new and removed caps
- var capBurstClients ClientSet
- added := make(map[CapVersion]string)
- var removed string
-
- if len(addedCaps) > 0 || len(removedCaps) > 0 {
- capBurstClients = server.clients.AllWithCaps(CapNotify)
-
- added[Cap301] = addedCaps.String(Cap301)
- added[Cap302] = addedCaps.String(Cap302)
- // removed never has values
- removed = removedCaps.String(Cap301)
- }
-
- for sClient := range capBurstClients {
- if len(addedCaps) > 0 {
- sClient.Send(nil, server.name, "CAP", sClient.nick, "NEW", added[sClient.capVersion])
- }
- if len(removedCaps) > 0 {
- sClient.Send(nil, server.name, "CAP", sClient.nick, "DEL", removed)
- }
- }
-
- // set server options
- server.limits = Limits{
- AwayLen: int(config.Limits.AwayLen),
- ChannelLen: int(config.Limits.ChannelLen),
- KickLen: int(config.Limits.KickLen),
- MonitorEntries: int(config.Limits.MonitorEntries),
- NickLen: int(config.Limits.NickLen),
- TopicLen: int(config.Limits.TopicLen),
- ChanListModes: int(config.Limits.ChanListModes),
- }
- server.operclasses = *operclasses
- server.operators = opers
- server.checkIdent = config.Server.CheckIdent
-
- // registration
- accountReg := NewAccountRegistration(config.Registration.Accounts)
- server.accountRegistration = &accountReg
-
- // set RPL_ISUPPORT
- oldISupportList := server.isupport
- server.setISupport()
- newISupportReplies := oldISupportList.GetDifference(server.isupport)
-
- // push new info to all of our clients
- for _, sClient := range server.clients.ByNick {
- for _, tokenline := range newISupportReplies {
- // ugly trickery ahead
- sClient.Send(nil, server.name, RPL_ISUPPORT, append([]string{sClient.nick}, tokenline...)...)
- }
- }
-
- // destroy old listeners
- tlsListeners := config.TLSListeners()
- for addr := range server.listeners {
- var exists bool
- for _, newaddr := range config.Server.Listen {
- if newaddr == addr {
- exists = true
- break
- }
- }
-
- server.listenerEventActMutex.Lock()
- if exists {
- // update old listener
- server.listeners[addr].Events <- ListenerEvent{
- Type: UpdateListener,
- NewConfig: tlsListeners[addr],
- }
- } else {
- // destroy nonexistent listener
- server.listeners[addr].Events <- ListenerEvent{
- Type: DestroyListener,
- }
- }
- // force listener to apply the event right away
- server.listeners[addr].Listener.Close()
-
- server.listenerEventActMutex.Unlock()
- }
-
- for _, newaddr := range config.Server.Listen {
- _, exists := server.listeners[newaddr]
- if !exists {
- // make new listener
- server.createListener(newaddr, tlsListeners)
- }
- }
-
- server.rehashMutex.Unlock()
- return nil
- }
-
- // REHASH
- func rehashHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- err := server.rehash()
-
- if err == nil {
- client.Send(nil, server.name, RPL_REHASHING, client.nick, "ircd.yaml", "Rehashing")
- } else {
- client.Send(nil, server.name, ERR_UNKNOWNERROR, client.nick, "REHASH", err.Error())
- }
- return false
- }
-
- // AWAY [<message>]
- func awayHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- var isAway bool
- var text string
- if len(msg.Params) > 0 {
- isAway = true
- text = msg.Params[0]
- if len(text) > server.limits.AwayLen {
- text = text[:server.limits.AwayLen]
- }
- }
-
- if isAway {
- client.flags[Away] = true
- } else {
- delete(client.flags, Away)
- }
- client.awayMessage = text
-
- var op ModeOp
- if client.flags[Away] {
- op = Add
- client.Send(nil, server.name, RPL_NOWAWAY, client.nick, "You have been marked as being away")
- } else {
- op = Remove
- client.Send(nil, server.name, RPL_UNAWAY, client.nick, "You are no longer marked as being away")
- }
- //TODO(dan): Should this be sent automagically as part of setting the flag/mode?
- modech := ModeChanges{&ModeChange{
- mode: Away,
- op: op,
- }}
- client.Send(nil, server.name, "MODE", client.nick, client.nick, modech.String())
-
- // dispatch away-notify
- for friend := range client.Friends(AwayNotify) {
- if client.flags[Away] {
- friend.SendFromClient(client, nil, client.nickMaskString, "AWAY", client.awayMessage)
- } else {
- friend.SendFromClient(client, nil, client.nickMaskString, "AWAY")
- }
- }
-
- return false
- }
-
- // ISON <nick>{ <nick>}
- func isonHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- var nicks = msg.Params
-
- var err error
- var casefoldedNick string
- ison := make([]string, 0)
- for _, nick := range nicks {
- casefoldedNick, err = CasefoldName(nick)
- if err != nil {
- continue
- }
- if iclient := server.clients.Get(casefoldedNick); iclient != nil {
- ison = append(ison, iclient.nick)
- }
- }
-
- client.Send(nil, server.name, RPL_ISON, client.nick, strings.Join(nicks, " "))
- return false
- }
-
- // MOTD [<target>]
- func motdHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- //TODO(dan): hook this up when we have multiple servers I guess???
- //var target string
- //if len(msg.Params) > 0 {
- // target = msg.Params[0]
- //}
-
- server.MOTD(client)
- return false
- }
-
- // NOTICE <target>{,<target>} <message>
- func noticeHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- clientOnlyTags := GetClientOnlyTags(msg.Tags)
- targets := strings.Split(msg.Params[0], ",")
- message := msg.Params[1]
-
- for _, targetString := range targets[:4] {
- prefixes, targetString := SplitChannelMembershipPrefixes(targetString)
- lowestPrefix := GetLowestChannelModePrefix(prefixes)
-
- target, cerr := CasefoldChannel(targetString)
- if cerr == nil {
- channel := server.channels.Get(target)
- if channel == nil {
- // errors silently ignored with NOTICE as per RFC
- continue
- }
- channel.PrivMsg(lowestPrefix, clientOnlyTags, client, message)
- } else {
- target, err := CasefoldName(targetString)
- if err != nil {
- continue
- }
-
- user := server.clients.Get(target)
- if user == nil {
- // errors silently ignored with NOTICE as per RFC
- continue
- }
- if !user.capabilities[MessageTags] {
- clientOnlyTags = nil
- }
- user.SendFromClient(client, clientOnlyTags, client.nickMaskString, "NOTICE", user.nick, message)
- if client.capabilities[EchoMessage] {
- client.SendFromClient(client, clientOnlyTags, client.nickMaskString, "NOTICE", user.nick, message)
- }
- }
- }
- return false
- }
-
- // KICK <channel>{,<channel>} <user>{,<user>} [<comment>]
- func kickHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- channels := strings.Split(msg.Params[0], ",")
- users := strings.Split(msg.Params[1], ",")
- if (len(channels) != len(users)) && (len(users) != 1) {
- client.Send(nil, server.name, ERR_NEEDMOREPARAMS, client.nick, "KICK", "Not enough parameters")
- return false
- }
-
- kicks := make(map[string]string)
- for index, channel := range channels {
- if len(users) == 1 {
- kicks[channel] = users[0]
- } else {
- kicks[channel] = users[index]
- }
- }
-
- var comment string
- if len(msg.Params) > 2 {
- comment = msg.Params[2]
- }
- for chname, nickname := range kicks {
- casefoldedChname, err := CasefoldChannel(chname)
- channel := server.channels.Get(casefoldedChname)
- if err != nil || channel == nil {
- client.Send(nil, server.name, ERR_NOSUCHCHANNEL, client.nick, chname, "No such channel")
- continue
- }
-
- casefoldedNickname, err := CasefoldName(nickname)
- target := server.clients.Get(casefoldedNickname)
- if err != nil || target == nil {
- client.Send(nil, server.name, ERR_NOSUCHNICK, nickname, "No such nick")
- continue
- }
-
- // make sure client has privs to kick the given user
- //TODO(dan): split this into a separate function that checks if users have privs
- // over other users, useful for things like -aoh as well
- var hasPrivs bool
- for _, mode := range ChannelPrivModes {
- if channel.members[client][mode] {
- hasPrivs = true
-
- // admins cannot kick other admins
- if mode == ChannelAdmin && channel.members[target][ChannelAdmin] {
- hasPrivs = false
- }
-
- break
- } else if channel.members[target][mode] {
- break
- }
- }
-
- if hasPrivs {
- if comment == "" {
- comment = nickname
- }
- channel.Kick(client, target, comment)
- } else {
- client.Send(nil, client.server.name, ERR_CHANOPRIVSNEEDED, chname, "You're not a channel operator")
- }
- }
- return false
- }
-
- // LIST [<channel>{,<channel>} [<server>]]
- func listHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- var channels []string
- if len(msg.Params) > 0 {
- channels = strings.Split(msg.Params[0], ",")
- }
- var target string
- if len(msg.Params) > 1 {
- target = msg.Params[1]
- }
-
- //TODO(dan): target server when we have multiple servers
- //TODO(dan): we should continue just fine if it's this current server though
- if target != "" {
- client.Send(nil, server.name, ERR_NOSUCHSERVER, client.nick, target, "No such server")
- return false
- }
-
- if len(channels) == 0 {
- for _, channel := range server.channels {
- if !client.flags[Operator] && channel.flags[Secret] {
- continue
- }
- client.RplList(channel)
- }
- } else {
- // limit regular users to only listing one channel
- if !client.flags[Operator] {
- channels = channels[:1]
- }
-
- for _, chname := range channels {
- casefoldedChname, err := CasefoldChannel(chname)
- channel := server.channels.Get(casefoldedChname)
- if err != nil || channel == nil || (!client.flags[Operator] && channel.flags[Secret]) {
- client.Send(nil, server.name, ERR_NOSUCHCHANNEL, client.nick, chname, "No such channel")
- continue
- }
- client.RplList(channel)
- }
- }
- client.Send(nil, server.name, RPL_LISTEND, client.nick, "End of LIST")
- return false
- }
-
- func (target *Client) RplList(channel *Channel) {
- // get the correct number of channel members
- var memberCount int
- if target.flags[Operator] || channel.members.Has(target) {
- memberCount = len(channel.members)
- } else {
- for member := range channel.members {
- if !member.flags[Invisible] {
- memberCount += 1
- }
- }
- }
-
- target.Send(nil, target.server.name, RPL_LIST, target.nick, channel.name, string(memberCount), channel.topic)
- }
-
- // NAMES [<channel>{,<channel>}]
- func namesHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- var channels []string
- if len(msg.Params) > 0 {
- channels = strings.Split(msg.Params[0], ",")
- }
- //var target string
- //if len(msg.Params) > 1 {
- // target = msg.Params[1]
- //}
-
- if len(channels) == 0 {
- for _, channel := range server.channels {
- channel.Names(client)
- }
- return false
- }
-
- // limit regular users to only listing one channel
- if !client.flags[Operator] {
- channels = channels[:1]
- }
-
- for _, chname := range channels {
- casefoldedChname, err := CasefoldChannel(chname)
- channel := server.channels.Get(casefoldedChname)
- if err != nil || channel == nil {
- client.Send(nil, server.name, ERR_NOSUCHCHANNEL, client.nick, chname, "No such channel")
- continue
- }
- channel.Names(client)
- }
- return false
- }
-
- // VERSION [<server>]
- func versionHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- var target string
- if len(msg.Params) > 0 {
- target = msg.Params[0]
- }
- casefoldedTarget, err := Casefold(target)
- if (target != "") && err != nil || (casefoldedTarget != server.nameCasefolded) {
- client.Send(nil, server.name, ERR_NOSUCHSERVER, client.nick, target, "No such server")
- return false
- }
-
- client.Send(nil, server.name, RPL_VERSION, client.nick, Ver, server.name)
- client.RplISupport()
- return false
- }
-
- // INVITE <nickname> <channel>
- func inviteHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- nickname := msg.Params[0]
- channelName := msg.Params[1]
-
- casefoldedNickname, err := CasefoldName(nickname)
- target := server.clients.Get(casefoldedNickname)
- if err != nil || target == nil {
- client.Send(nil, server.name, ERR_NOSUCHNICK, client.nick, nickname, "No such nick")
- return false
- }
-
- casefoldedChannelName, err := CasefoldChannel(channelName)
- channel := server.channels.Get(casefoldedChannelName)
- if err != nil || channel == nil {
- client.Send(nil, server.name, RPL_INVITING, client.nick, target.nick, channelName)
- target.Send(nil, client.nickMaskString, "INVITE", target.nick, channel.name)
- return true
- }
-
- channel.Invite(target, client)
- return false
- }
-
- // TIME [<server>]
- func timeHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- var target string
- if len(msg.Params) > 0 {
- target = msg.Params[0]
- }
- casefoldedTarget, err := Casefold(target)
- if (target != "") && err != nil || (casefoldedTarget != server.nameCasefolded) {
- client.Send(nil, server.name, ERR_NOSUCHSERVER, client.nick, target, "No such server")
- return false
- }
- client.Send(nil, server.name, RPL_TIME, client.nick, server.name, time.Now().Format(time.RFC1123))
- return false
- }
-
- // KILL <nickname> <comment>
- func killHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- nickname := msg.Params[0]
- comment := "<no reason supplied>"
- if len(msg.Params) > 1 {
- comment = msg.Params[1]
- }
-
- casefoldedNickname, err := CasefoldName(nickname)
- target := server.clients.Get(casefoldedNickname)
- if err != nil || target == nil {
- client.Send(nil, client.server.name, ERR_NOSUCHNICK, nickname, "No such nick")
- return false
- }
-
- quitMsg := fmt.Sprintf("Killed (%s (%s))", client.nick, comment)
- target.Quit(quitMsg)
- target.destroy()
- return false
- }
-
- // WHOWAS <nickname> [<count> [<server>]]
- func whowasHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- nicknames := strings.Split(msg.Params[0], ",")
-
- var count int64
- if len(msg.Params) > 1 {
- count, _ = strconv.ParseInt(msg.Params[1], 10, 64)
- }
- //var target string
- //if len(msg.Params) > 2 {
- // target = msg.Params[2]
- //}
- for _, nickname := range nicknames {
- results := server.whoWas.Find(nickname, count)
- if len(results) == 0 {
- client.Send(nil, server.name, ERR_WASNOSUCHNICK, client.nick, nickname, "There was no such nickname")
- } else {
- for _, whoWas := range results {
- client.Send(nil, server.name, RPL_WHOWASUSER, client.nick, whoWas.nickname, whoWas.username, whoWas.hostname, "*", whoWas.realname)
- }
- }
- client.Send(nil, server.name, RPL_ENDOFWHOWAS, client.nick, nickname, "End of WHOWAS")
- }
- return false
- }
|